MS520
Description
Specification
Configurations
Diffraction gratings

While choosing a device configuration it is important to select properly the diffraction gratings. A right selection of the diffraction grating allows one to obtain the best combination of high energetic efficiency and spectral resolution.

The basic grating parameters which determine their right choice you can find in the methodical material “Spectral Instrument. Basic Concepts and Characteristics.”

We propose a wide range of diffraction gratings to be used in the MS520 series monochromator-spectrographs. Please, choose a necessary grating from the given below list, or consult our specialists.

Diffraction grating

Basic parameters for correct selection of diffraction gratings:

In the table “Selection of diffraction gratings” groove density and blaze wavelength belong to a diffraction grating parameters. Other parameters characterize a spectral device together with a selected grating.

  • Groove density
    The diffraction grating has a periodic structure. Such parameters as resolving power and free spectral range are determined by the periodic structure properties of a diffraction grating. The period of grating is the distance through which grooves are repeated. The reciprocal value of a grating period is called the groove density and displays the number of grooves in 1 mm.
  • Blaze wavelength
    The reflectivity of a grating depends on the grooves geometry, because the direction to the center of the diffraction maximum is determined by the mirror reflection of the incident beam from the edge of a groove. In spite of rather flat profile of diffraction maximum a blaze wavelength that corresponds to the maximum efficiency of the grating has been adopted as a feature for convenience of calculation. When selecting a grating it is useful to determine a blaze wavelength for a required grating on the spectral range of limited wavelengths WL1 and WL2. The blaze wavelength is determined by the ratio:
    WLBlaze = 2 ∙ WL1 ∙ WL2 / (WL1 + WL2).
  • Reciprocal linear dispersion
    The light from a grating in the focal plane of a spectral instrument forms a spectrum. Linear dispersion is used for a spectrum characteristic, which is defined as a reciprocal value of the product of angular dispersion of a grating and focal length of a spectral instrument and shows the spectral range that falls on a single linear distance in a focal plane.
  • The spectral resolution
    Limiting resolution of a spectral instrument is equal to the minimum half-width of its instrument function. The instrument function is determined by finite sizes of entrance diaphragm, aberrations and also distortions caused by inaccuracy in manufacturing and adjustment of optical elements of instrument. In addition, instrument function, and thus spectral resolution are dependent on lighting method of entrance slit, used aperture and registration system parameters.
  • Operating wavelength range
    Energy efficiency range referred to the wavelength region in which grating reflection coefficient is not less than 0.405 of the maximum. In the first order this range is limited by the wavelengths: ⅔ ∙ WLBlaze and 2 ∙ WLBlaze.
    Operating range usually corresponds to a grating energy efficiency. In some cases, for gratings with a high groove density and large blaze wavelength, the long-wave border of operating spectral range of instrument is limited by a maximal rotation angle of a grating which is defined by design of instrument.

Table for selection of diffraction gratings

Model Line density, mm-1 Blaze wavelength, nm *Reciprocal linear dispersion, nm/mm Spectral resolution, nm Operating wavelengths range, nm Spectral range limited by the grating rotation angle, nm
75 – 0.11 (wavelength 200 nm, 120 order) 0.0024 (wavelength 200 nm, 120 order) – –
783600 3600 hol 0.51** 0.011 185 – 450 500
782422 2400 225 0.79 0.017 185 – 450 750
782427 2400 270 0.78 0.017 185 – 540 750
782440 2400 400 0.74 0.016 270 – 750 750
781827 1800 270 1.05 0.023 185 – 540 1000
781840 1800 400 1.03 0.022 270 – 800 1000
781840 1800 500 1 0.022 335 – 1000 1000
781875 1800 750 0.86 0.019 500 – 1000 1000
781225 1200 250 1.6 0.035 185 – 500 1500
781228 1200 280 1.59 0.035 190 – 560 1500
781240 1200 400 1.58 0.035 270 – 800 1500
781250 1200 500 1.57 0.034 335 – 1000 1500
781260 1200 600 1.54 0.034 400 – 1200 1500
781275 1200 750 1.5 0.033 500 – 1500 1500
780623 600 230 3.19 0.07 185 – 460 3000
780630 600 300 3.19 0.07 200 – 600 3000
780640 600 400 3.19 0.07 270 – 800 3000
780650 600 500 3.19 0.07 335 – 1000 3000
780660 600 600 3.19 0.07 400 – 1200 3000
780675 600 750 3.17 0.069 500 – 1500 3000
7804008 400 800 4.78 0.1 535 – 1600 4500
7804012 400 1200 4.75 0.1 800 – 2400 4500
7804017 400 1700 4.66 0.1 1135 – 3400 4500
7804020 400 2000 4.57 0.1 1335 – 4000 4500
7804025 400 2500 4.38 0.1 1670 – 4500 4500
780330 300 300 6.37 0.14 200 – 600 6000
780335 300 350 6.37 0.14 235 – 700 6000
780350 300 500 6.38 0.14 335 – 1000 6000
780360 300 600 6.38 0.14 400 – 1200 6000
780370 300 700 6.39 0.14 470 – 1400 6000
7803010 300 1000 6.38 0.14 670 – 2000 6000
7803015 300 1500 6.34 0.14 1000 – 3000 6000
7803020 300 2000 6.27 0.14 1335 – 4000 6000
7803030 300 3000 5.98 0.13 2000 – 6000 6000
7803035 300 3500 5.77 0.13 2330 – 6000 6000
780235 200 350 9.55 0.21 235 – 700 9000
780240 200 400 9.55 0.21 270 – 800 9000
780250 200 500 9.56 0.21 335 – 1000 9000
780270 200 700 9.57 0.21 470 – 1400 9000
7802015 200 1500 9.57 0.21 1000 – 3000 9000
7802020 200 2000 9.54 0.21 1335 – 4000 9000
7802025 200 2500 9.48 0.21 1670 – 5000 9000
7802030 200 3000 9.4 0.21 2000 – 6000 9000
781547 150 475 12.7 0.28 320 – 950 12000
781570 150 700 12.7 0.28 470 – 1400 12000
7815030 150 3000 12.7 0.28 2000 – 6000 12000
7815045 150 4500 12.4 0.27 3000 – 9000 12000
780165 100 650 19.1 0.42 435 – 1300 18000
780170 100 700 19.1 0.42 470 – 1400 18000
7801010 100 1000 19.1 0.42 670 – 2000 18000
7801020 100 2000 19.2 0.42 1335 – 4000 18000
7801025 100 2500 19.2 0.42 1670 – 5000 18000
7801030 100 3000 19.1 0.42 2000 – 6000 18000
7801042 100 4200 19.1 0.42 2800 – 8400 18000
7801048 100 4800 19 0.41 3200 – 9600 18000
7801055 100 5500 18.9 0.41 3670 – 11000 18000
7801062 100 6200 18.8 0.41 4130 – 12400 18000
7801072 100 7200 18.5 0.4 4800 – 14400 18000
7801088 100 8750 18 0.39 5830 – 17500 18000
7801097 100 9700 17.7 0.39 6470 – 18000 18000
7801103 100 10300 17.4 0.38 6870 – 18000 18000
7875070 75 7000 25.2 0.55 4670 – 14000 24000
7875095 75 9500 24.7 0.54 6330 – 19000 24000
7850010 50 1000 38.2 0.83 670 – 2000 36000
7850038 50 3800 38.3 0.84 2530 – 7600 36000
7850063 50 6300 38.3 0.84 4200 – 12600 36000
7850070 50 7000 38.2 0.83 4670 – 14000 36000
7850083 50 8300 38.1 0.83 5530 – 16600 36000
7850124 50 12400 37.5 0.82 8270 – 24800 36000
7850169 50 16900 36.3 0.79 11270 – 33800 36000
7850200 50 20000 35.1 0.77 13330 – 36000 36000
7837028 37.5 2800 51 1.11 1870 – 5600 48000
7837056 37.5 5600 51.1 1.12 3735 – 11200 48000
7837093 37.5 9300 51 1.11 6200 – 18600 48000
7837156 37.5 15600 50.2 1.1 10400 – 31200 48000
7824116 24 11600 79.8 1.74 7730 – 23200 75000
7824144 24 14400 79.7 1.74 9600 – 28800 75000
7824173 24 17300 79.4 1.73 11530 – 34600 75000
7824243 24 24300 78.5 1.71 16200 – 48600 75000
7824285 24 28500 77.6 1.69 19000 – 57000 75000
7824325 24 32500 76.5 1.67 21670 – 65000 75000

Gratings with line density
75 mm-1

  • Model: *reciprocal linear dispersion = 0.11 nm/mm (wavelength 200 nm, 120 order); spectral resolution = 0.0024 nm (wavelength 200 nm, 120 order).

Gratings with line density
3600 mm-1

  • Model 783600: blaze wavelength = hol; *reciprocal linear dispersion = 0.51** nm/mm; spectral resolution = 0.011 nm; operating wavelengths range = 185-450 nm; spectral range limited by the grating rotation angle = 500 nm.

Gratings with line density
2400 mm-1

  • Model 782422: blaze wavelength = 225 nm; *reciprocal linear dispersion = 0.79 nm/mm; spectral resolution = 0.017 nm; operating wavelengths range = 185-450 nm; spectral range limited by the grating rotation angle = 750 nm.
  • Model 782427: blaze wavelength = 270 nm; *reciprocal linear dispersion = 0.78 nm/mm; spectral resolution = 0.017 nm; operating wavelengths range = 185-540 nm; spectral range limited by the grating rotation angle = 750 nm.
  • Model 782440: blaze wavelength = 400 nm; *reciprocal linear dispersion = 0.74 nm/mm; spectral resolution = 0.016 nm; operating wavelengths range = 270-750 nm; spectral range limited by the grating rotation angle = 750 nm.

Gratings with line density
1800 mm-1

  • Model 781827: blaze wavelength = 270 nm; *reciprocal linear dispersion = 1.05 nm/mm; spectral resolution = 0.023 nm; operating wavelengths range = 185-540 nm; spectral range limited by the grating rotation angle = 1000 nm.
  • Model 781840: blaze wavelength = 400 nm; *reciprocal linear dispersion = 1.03 nm/mm; spectral resolution = 0.022 nm; operating wavelengths range = 270-800 nm; spectral range limited by the grating rotation angle = 1000 nm.
  • Model 781840: blaze wavelength = 500 nm; *reciprocal linear dispersion = 1 nm/mm; spectral resolution = 0.022 nm; operating wavelengths range = 335-1000 nm; spectral range limited by the grating rotation angle = 1000 nm.
  • Model 781875: blaze wavelength = 750 nm; *reciprocal linear dispersion = 0.86 nm/mm; spectral resolution = 0.019 nm; operating wavelengths range = 500-1000 nm; spectral range limited by the grating rotation angle = 1000 nm.

Gratings with line density
1200 mm-1

  • Model 781225: blaze wavelength = 250 nm; *reciprocal linear dispersion = 1.6 nm/mm; spectral resolution = 0.035 nm; operating wavelengths range = 185-500 nm; spectral range limited by the grating rotation angle = 1500 nm.
  • Model 781228: blaze wavelength = 280 nm; *reciprocal linear dispersion = 1.59 nm/mm; spectral resolution = 0.035 nm; operating wavelengths range = 190-560 nm; spectral range limited by the grating rotation angle = 1500 nm.
  • Model 781240: blaze wavelength = 400 nm; *reciprocal linear dispersion = 1.58 nm/mm; spectral resolution = 0.035 nm; operating wavelengths range = 270-800 nm; spectral range limited by the grating rotation angle = 1500 nm.
  • Model 781250: blaze wavelength = 500 nm; *reciprocal linear dispersion = 1.57 nm/mm; spectral resolution = 0.034 nm; operating wavelengths range = 335-1000 nm; spectral range limited by the grating rotation angle = 1500 nm.
  • Model 781260: blaze wavelength = 600 nm; *reciprocal linear dispersion = 1.54 nm/mm; spectral resolution = 0.034 nm; operating wavelengths range = 400-1200 nm; spectral range limited by the grating rotation angle = 1500 nm.
  • Model 781275: blaze wavelength = 750 nm; *reciprocal linear dispersion = 1.5 nm/mm; spectral resolution = 0.033 nm; operating wavelengths range = 500-1500 nm; spectral range limited by the grating rotation angle = 1500 nm.

Gratings with line density
600 mm-1

  • Model 780623: blaze wavelength = 230 nm; *reciprocal linear dispersion = 3.19 nm/mm; spectral resolution = 0.07 nm; operating wavelengths range = 185-460 nm; spectral range limited by the grating rotation angle = 3000 nm.
  • Model 780630: blaze wavelength = 300 nm; *reciprocal linear dispersion = 3.19 nm/mm; spectral resolution = 0.07 nm; operating wavelengths range = 200-600 nm; spectral range limited by the grating rotation angle = 3000 nm.
  • Model 780640: blaze wavelength = 400 nm; *reciprocal linear dispersion = 3.19 nm/mm; spectral resolution = 0.07 nm; operating wavelengths range = 270-800 nm; spectral range limited by the grating rotation angle = 3000 nm.
  • Model 780650: blaze wavelength = 500 nm; *reciprocal linear dispersion = 3.19 nm/mm; spectral resolution = 0.07 nm; operating wavelengths range = 335-1000 nm; spectral range limited by the grating rotation angle = 3000 nm.
  • Model 780660: blaze wavelength = 600 nm; *reciprocal linear dispersion = 3.19 nm/mm; spectral resolution = 0.07 nm; operating wavelengths range = 400-1200 nm; spectral range limited by the grating rotation angle = 3000 nm.
  • Model 780675: blaze wavelength = 750 nm; *reciprocal linear dispersion = 3.17 nm/mm; spectral resolution = 0.069 nm; operating wavelengths range = 500-1500 nm; spectral range limited by the grating rotation angle = 3000 nm.

Gratings with line density
400 mm-1

  • Model 7804008: blaze wavelength = 800 nm; *reciprocal linear dispersion = 4.78 nm/mm; spectral resolution = 0.1 nm; operating wavelengths range = 535-1600 nm; spectral range limited by the grating rotation angle = 4500 nm.
  • Model 7804012: blaze wavelength = 1200 nm; *reciprocal linear dispersion = 4.75 nm/mm; spectral resolution = 0.1 nm; operating wavelengths range = 800-2400 nm; spectral range limited by the grating rotation angle = 4500 nm.
  • Model 7804017: blaze wavelength = 1700 nm; *reciprocal linear dispersion = 4.66 nm/mm; spectral resolution = 0.1 nm; operating wavelengths range = 1135-3400 nm; spectral range limited by the grating rotation angle = 4500 nm.
  • Model 7804020: blaze wavelength = 2000 nm; *reciprocal linear dispersion = 4.57 nm/mm; spectral resolution = 0.1 nm; operating wavelengths range = 1335-4000 nm; spectral range limited by the grating rotation angle = 4500 nm.
  • Model 7804025: blaze wavelength = 2500 nm; *reciprocal linear dispersion = 4.38 nm/mm; spectral resolution = 0.1 nm; operating wavelengths range = 1670-4500 nm; spectral range limited by the grating rotation angle = 4500 nm.

Gratings with line density
300 mm-1

  • Model 780330: blaze wavelength = 300 nm; *reciprocal linear dispersion = 6.37 nm/mm; spectral resolution = 0.14 nm; operating wavelengths range = 200-600 nm; spectral range limited by the grating rotation angle = 6000 nm.
  • Model 780335: blaze wavelength = 350 nm; *reciprocal linear dispersion = 6.37 nm/mm; spectral resolution = 0.14 nm; operating wavelengths range = 235-700 nm; spectral range limited by the grating rotation angle = 6000 nm.
  • Model 780350: blaze wavelength = 500 nm; *reciprocal linear dispersion = 6.38 nm/mm; spectral resolution = 0.14 nm; operating wavelengths range = 335-1000 nm; spectral range limited by the grating rotation angle = 6000 nm.
  • Model 780360: blaze wavelength = 600 nm; *reciprocal linear dispersion = 6.38 nm/mm; spectral resolution = 0.14 nm; operating wavelengths range = 400-1200 nm; spectral range limited by the grating rotation angle = 6000 nm.
  • Model 780370: blaze wavelength = 700 nm; *reciprocal linear dispersion = 6.39 nm/mm; spectral resolution = 0.14 nm; operating wavelengths range = 470-1400 nm; spectral range limited by the grating rotation angle = 6000 nm.
  • Model 7803010: blaze wavelength = 1000 nm; *reciprocal linear dispersion = 6.38 nm/mm; spectral resolution = 0.14 nm; operating wavelengths range = 670-2000 nm; spectral range limited by the grating rotation angle = 6000 nm.
  • Model 7803015: blaze wavelength = 1500 nm; *reciprocal linear dispersion = 6.34 nm/mm; spectral resolution = 0.14 nm; operating wavelengths range = 1000-3000 nm; spectral range limited by the grating rotation angle = 6000 nm.
  • Model 7803020: blaze wavelength = 2000 nm; *reciprocal linear dispersion = 6.27 nm/mm; spectral resolution = 0.14 nm; operating wavelengths range = 1335-4000 nm; spectral range limited by the grating rotation angle = 6000 nm.
  • Model 7803030: blaze wavelength = 3000 nm; *reciprocal linear dispersion = 5.98 nm/mm; spectral resolution = 0.13 nm; operating wavelengths range = 2000-6000 nm; spectral range limited by the grating rotation angle = 6000 nm.
  • Model 7803035: blaze wavelength = 3500 nm; *reciprocal linear dispersion = 5.77 nm/mm; spectral resolution = 0.13 nm; operating wavelengths range = 2330-6000 nm; spectral range limited by the grating rotation angle = 6000 nm.

Gratings with line density
200 mm-1

  • Model 780235: blaze wavelength = 350 nm; *reciprocal linear dispersion = 9.55 nm/mm; spectral resolution = 0.21 nm; operating wavelengths range = 235-700 nm; spectral range limited by the grating rotation angle = 9000 nm.
  • Model 780240: blaze wavelength = 400 nm; *reciprocal linear dispersion = 9.55 nm/mm; spectral resolution = 0.21 nm; operating wavelengths range = 270-800 nm; spectral range limited by the grating rotation angle = 9000 nm.
  • Model 780250: blaze wavelength = 500 nm; *reciprocal linear dispersion = 9.56 nm/mm; spectral resolution = 0.21 nm; operating wavelengths range = 335-1000 nm; spectral range limited by the grating rotation angle = 9000 nm.
  • Model 780270: blaze wavelength = 700 nm; *reciprocal linear dispersion = 9.57 nm/mm; spectral resolution = 0.21 nm; operating wavelengths range = 470-1400 nm; spectral range limited by the grating rotation angle = 9000 nm.
  • Model 7802015: blaze wavelength = 1500 nm; *reciprocal linear dispersion = 9.57 nm/mm; spectral resolution = 0.21 nm; operating wavelengths range = 1000-3000 nm; spectral range limited by the grating rotation angle = 9000 nm.
  • Model 7802020: blaze wavelength = 2000 nm; *reciprocal linear dispersion = 9.54 nm/mm; spectral resolution = 0.21 nm; operating wavelengths range = 1335-4000 nm; spectral range limited by the grating rotation angle = 9000 nm.
  • Model 7802025: blaze wavelength = 2500 nm; *reciprocal linear dispersion = 9.48 nm/mm; spectral resolution = 0.21 nm; operating wavelengths range = 1670-5000 nm; spectral range limited by the grating rotation angle = 9000 nm.
  • Model 7802030: blaze wavelength = 3000 nm; *reciprocal linear dispersion = 9.4 nm/mm; spectral resolution = 0.21 nm; operating wavelengths range = 2000-6000 nm; spectral range limited by the grating rotation angle = 9000 nm.

Gratings with line density
150 mm-1

  • Model 781547: blaze wavelength = 475 nm; *reciprocal linear dispersion = 12.7 nm/mm; spectral resolution = 0.28 nm; operating wavelengths range = 320-950 nm; spectral range limited by the grating rotation angle = 12000 nm.
  • Model 781570: blaze wavelength = 700 nm; *reciprocal linear dispersion = 12.7 nm/mm; spectral resolution = 0.28 nm; operating wavelengths range = 470-1400 nm; spectral range limited by the grating rotation angle = 12000 nm.
  • Model 7815030: blaze wavelength = 3000 nm; *reciprocal linear dispersion = 12.7 nm/mm; spectral resolution = 0.28 nm; operating wavelengths range = 2000-6000 nm; spectral range limited by the grating rotation angle = 12000 nm.
  • Model 7815045: blaze wavelength = 4500 nm; *reciprocal linear dispersion = 12.4 nm/mm; spectral resolution = 0.27 nm; operating wavelengths range = 3000-9000 nm; spectral range limited by the grating rotation angle = 12000 nm.

Gratings with line density
100 mm-1

  • Model 780165: blaze wavelength = 650 nm; *reciprocal linear dispersion = 19.1 nm/mm; spectral resolution = 0.42 nm; operating wavelengths range = 435-1300 nm; spectral range limited by the grating rotation angle = 18000 nm.
  • Model 780170: blaze wavelength = 700 nm; *reciprocal linear dispersion = 19.1 nm/mm; spectral resolution = 0.42 nm; operating wavelengths range = 470-1400 nm; spectral range limited by the grating rotation angle = 18000 nm.
  • Model 7801010: blaze wavelength = 1000 nm; *reciprocal linear dispersion = 19.1 nm/mm; spectral resolution = 0.42 nm; operating wavelengths range = 670-2000 nm; spectral range limited by the grating rotation angle = 18000 nm.
  • Model 7801020: blaze wavelength = 2000 nm; *reciprocal linear dispersion = 19.2 nm/mm; spectral resolution = 0.42 nm; operating wavelengths range = 1335-4000 nm; spectral range limited by the grating rotation angle = 18000 nm.
  • Model 7801025: blaze wavelength = 2500 nm; *reciprocal linear dispersion = 19.2 nm/mm; spectral resolution = 0.42 nm; operating wavelengths range = 1670-5000 nm; spectral range limited by the grating rotation angle = 18000 nm.
  • Model 7801030: blaze wavelength = 3000 nm; *reciprocal linear dispersion = 19.1 nm/mm; spectral resolution = 0.42 nm; operating wavelengths range = 2000-6000 nm; spectral range limited by the grating rotation angle = 18000 nm.
  • Model 7801042: blaze wavelength = 4200 nm; *reciprocal linear dispersion = 19.1 nm/mm; spectral resolution = 0.42 nm; operating wavelengths range = 2800-8400 nm; spectral range limited by the grating rotation angle = 18000 nm.
  • Model 7801048: blaze wavelength = 4800 nm; *reciprocal linear dispersion = 19 nm/mm; spectral resolution = 0.41 nm; operating wavelengths range = 3200-9600 nm; spectral range limited by the grating rotation angle = 18000 nm.
  • Model 7801055: blaze wavelength = 5500 nm; *reciprocal linear dispersion = 18.9 nm/mm; spectral resolution = 0.41 nm; operating wavelengths range = 3670-11000 nm; spectral range limited by the grating rotation angle = 18000 nm.
  • Model 7801062: blaze wavelength = 6200 nm; *reciprocal linear dispersion = 18.8 nm/mm; spectral resolution = 0.41 nm; operating wavelengths range = 4130-12400 nm; spectral range limited by the grating rotation angle = 18000 nm.
  • Model 7801072: blaze wavelength = 7200 nm; *reciprocal linear dispersion = 18.5 nm/mm; spectral resolution = 0.4 nm; operating wavelengths range = 4800-14400 nm; spectral range limited by the grating rotation angle = 18000 nm.
  • Model 7801088: blaze wavelength = 8750 nm; *reciprocal linear dispersion = 18 nm/mm; spectral resolution = 0.39 nm; operating wavelengths range = 5830-17500 nm; spectral range limited by the grating rotation angle = 18000 nm.
  • Model 7801097: blaze wavelength = 9700 nm; *reciprocal linear dispersion = 17.7 nm/mm; spectral resolution = 0.39 nm; operating wavelengths range = 6470-18000 nm; spectral range limited by the grating rotation angle = 18000 nm.
  • Model 7801103: blaze wavelength = 10300 nm; *reciprocal linear dispersion = 17.4 nm/mm; spectral resolution = 0.38 nm; operating wavelengths range = 6870-18000 nm; spectral range limited by the grating rotation angle = 18000 nm.

Gratings with line density
75 mm-1

  • Model 7875070: blaze wavelength = 7000 nm; *reciprocal linear dispersion = 25.2 nm/mm; spectral resolution = 0.55 nm; operating wavelengths range = 4670-14000 nm; spectral range limited by the grating rotation angle = 24000 nm.
  • Model 7875095: blaze wavelength = 9500 nm; *reciprocal linear dispersion = 24.7 nm/mm; spectral resolution = 0.54 nm; operating wavelengths range = 6330-19000 nm; spectral range limited by the grating rotation angle = 24000 nm.

Gratings with line density
50 mm-1

  • Model 7850010: blaze wavelength = 1000 nm; *reciprocal linear dispersion = 38.2 nm/mm; spectral resolution = 0.83 nm; operating wavelengths range = 670-2000 nm; spectral range limited by the grating rotation angle = 36000 nm.
  • Model 7850038: blaze wavelength = 3800 nm; *reciprocal linear dispersion = 38.3 nm/mm; spectral resolution = 0.84 nm; operating wavelengths range = 2530-7600 nm; spectral range limited by the grating rotation angle = 36000 nm.
  • Model 7850063: blaze wavelength = 6300 nm; *reciprocal linear dispersion = 38.3 nm/mm; spectral resolution = 0.84 nm; operating wavelengths range = 4200-12600 nm; spectral range limited by the grating rotation angle = 36000 nm.
  • Model 7850070: blaze wavelength = 7000 nm; *reciprocal linear dispersion = 38.2 nm/mm; spectral resolution = 0.83 nm; operating wavelengths range = 4670-14000 nm; spectral range limited by the grating rotation angle = 36000 nm.
  • Model 7850083: blaze wavelength = 8300 nm; *reciprocal linear dispersion = 38.1 nm/mm; spectral resolution = 0.83 nm; operating wavelengths range = 5530-16600 nm; spectral range limited by the grating rotation angle = 36000 nm.
  • Model 7850124: blaze wavelength = 12400 nm; *reciprocal linear dispersion = 37.5 nm/mm; spectral resolution = 0.82 nm; operating wavelengths range = 8270-24800 nm; spectral range limited by the grating rotation angle = 36000 nm.
  • Model 7850169: blaze wavelength = 16900 nm; *reciprocal linear dispersion = 36.3 nm/mm; spectral resolution = 0.79 nm; operating wavelengths range = 11270-33800 nm; spectral range limited by the grating rotation angle = 36000 nm.
  • Model 7850200: blaze wavelength = 20000 nm; *reciprocal linear dispersion = 35.1 nm/mm; spectral resolution = 0.77 nm; operating wavelengths range = 13330-36000 nm; spectral range limited by the grating rotation angle = 36000 nm.

Gratings with line density
37.5 mm-1

  • Model 7837028: blaze wavelength = 2800 nm; *reciprocal linear dispersion = 51 nm/mm; spectral resolution = 1.11 nm; operating wavelengths range = 1870-5600 nm; spectral range limited by the grating rotation angle = 48000 nm.
  • Model 7837056: blaze wavelength = 5600 nm; *reciprocal linear dispersion = 51.1 nm/mm; spectral resolution = 1.12 nm; operating wavelengths range = 3735-11200 nm; spectral range limited by the grating rotation angle = 48000 nm.
  • Model 7837093: blaze wavelength = 9300 nm; *reciprocal linear dispersion = 51 nm/mm; spectral resolution = 1.11 nm; operating wavelengths range = 6200-18600 nm; spectral range limited by the grating rotation angle = 48000 nm.
  • Model 7837156: blaze wavelength = 15600 nm; *reciprocal linear dispersion = 50.2 nm/mm; spectral resolution = 1.1 nm; operating wavelengths range = 10400-31200 nm; spectral range limited by the grating rotation angle = 48000 nm.

Gratings with line density
24 mm-1

  • Model 7824116: blaze wavelength = 11600 nm; *reciprocal linear dispersion = 79.8 nm/mm; spectral resolution = 1.74 nm; operating wavelengths range = 7730-23200 nm; spectral range limited by the grating rotation angle = 75000 nm.
  • Model 7824144: blaze wavelength = 14400 nm; *reciprocal linear dispersion = 79.7 nm/mm; spectral resolution = 1.74 nm; operating wavelengths range = 9600-28800 nm; spectral range limited by the grating rotation angle = 75000 nm.
  • Model 7824173: blaze wavelength = 17300 nm; *reciprocal linear dispersion = 79.4 nm/mm; spectral resolution = 1.73 nm; operating wavelengths range = 11530-34600 nm; spectral range limited by the grating rotation angle = 75000 nm.
  • Model 7824243: blaze wavelength = 24300 nm; *reciprocal linear dispersion = 78.5 nm/mm; spectral resolution = 1.71 nm; operating wavelengths range = 16200-48600 nm; spectral range limited by the grating rotation angle = 75000 nm.
  • Model 7824285: blaze wavelength = 28500 nm; *reciprocal linear dispersion = 77.6 nm/mm; spectral resolution = 1.69 nm; operating wavelengths range = 19000-57000 nm; spectral range limited by the grating rotation angle = 75000 nm.
  • Model 7824325: blaze wavelength = 32500 nm; *reciprocal linear dispersion = 76.5 nm/mm; spectral resolution = 1.67 nm; operating wavelengths range = 21670-65000 nm; spectral range limited by the grating rotation angle = 75000 nm.

* At the blaze wavelength.
** At the wavelength 255 nm.
For blaze wavelength 2000 nm and shorter the data measured by multielement detectors with entrance slit 15 microns.
For the wavelength more than 2000 nm the data obtained by calculation with the entrance slit 15 microns.