Dimensional drawing of MSDD1000 instrument
Optical system
| Optical scheme: | modified Cherny-Turner two-fold configuration |
| Wavelengths range: | 185 nm – 60 µm |
| F\number: | 1/5.9 |
| Focal length: | 1000 mm (2 х 500 mm) |
| Scanning range limited by grating rotation angle*: | 0 – 1280 nm |
| Basic mirrors: | spherical |
| Stray light: | 10-8 (20 nm from the laser line 632,8 nm) |
| Flat field: | 28 х 10 mm |
- Optical scheme: modified Cherny-Turner two-fold configuration.
- Wavelengths range: 185 nm — 60 µm.
- F\number: 1/5.9.
- Focal length: 1000 mm (2 х 500 mm).
- Scanning range limited by the grating rotation angle*: 0 – 1280 nm.
- Basic mirrors: spherical.
- Stray light: 10-8 (20 nm from laser line 632,8 nm).
- Flat field: 28 х 10 mm.
Imaging
| Model: | MSDD1002, MSDD1004 | MSDD1002i, MSDD1004i | MSDD1002i, MSDD1004i |
|---|---|---|---|
| one or two einputs | one mirror input imaging | two lens inputs imaging for 190-2500 nm range | |
| Horizontal magnification: | 1 | 1.014 | 1.009 |
| Vertical magnification: | – | 1.17 | 1.218 |
- Model MSDD1002: horizontal magnification = 1.08.
- Model MSDD1004: horizontal magnification = 1.08.
Model MSDD1002i: horizontal magnification = 1.08; vertical magnification = 1.11; vertical spatial resolution = minimal distance between the edges of two neighboring tracks (in multi-channel spectroscopy) < 15 µm.
Model MSDD1004i: horizontal magnification = 1.08; vertical magnification = 1.11; vertical spatial resolution = minimal distance between the edges of two neighboring tracks (in multi-channel spectroscopy) < 15 µm.
Spectral image obtained with monochromator-spectrograph MSDD1000 (grating 1200 l/mm, light source – mercury-helium lamp – 576.961 nm and 579.067 nm, multi-channel optical fiber bundle, fiber core diameter 200 µm, CCD pixel size 12×12 µm). 1 – spectral image in full. 2 – enlarged part of the spectral image.
Drive specifications
| Motor: | micro stepper |
| Drive: | sine |
| Step size: | 0.18 arc seconds |
| Precision: | ± 1 step |
| Maximal speed: | 10000 steps/s |
- Motor: micro stepper.
- Drive: sine.
- Step size: 0.18 arc seconds.
- Precision: ± 1 step.
- Maximal speed: 10000 steps/s.
Optics characteristics
| Reciprocal dispersion: | 0.78 nm/mm |
| Repeatability: | ± 0.005 nm |
| Spectral resolution: | |
| PMT: | 0.013 nm |
| Digital camera (12 µm pixel): | 0.017 nm |
| Wavelength accuracy: | ± 0.028 nm |
| Average scanning step: | 0.0014 nm |
Reciprocal dispersion: 0.78 nm/mm.
- Repeatability: ± 0.005 nm.
- Spectral resolution: PMT = 0.013 nm; digital camera (12 µm pixel) = 0.017 nm.
- Wavelength accuracy: ± 0.028 nm.
- Average scanning step: 0.0014 nm.
Diffraction gratings
| Size of grating: | 80 x 70 x 10 mm |
| Rotation method: | about the center of ruled grating surface |
| Mounting of diffraction gratings in models MSDD1004 and MSDD1004i: | automated turret for 2 pairs of gratings |
| Mounting of diffraction gratings in models MSDD1002 and MSDD1002i: | holder for 1 pair of manually changeable grating |
| Grating repeatability for automated turret for 2 pairs of gratings (models MSDD1004 and MSDD1004i): | |
| wavelength*: | ± 0.006 nm |
| vertical image: | ± 20 µm |
| Grating repeatability for holder for 1 manually changeable grating (models MSDD1002 and MSDD1002i): | |
| wavelength*: | ± 0.05 nm |
| vertical image: | ± 75 µm |
Size of grating: 80 x 70 x 10 mm.
Rotation method: about the center of ruled grating surface.
- Mounting of diffraction gratings in models MSDD1004 and MSDD1004i: automated turret for 2 pairs of gratings.
- Mounting of diffraction gratings in models MSDD1002 and MSDD1002i: holder for 1 pair of manually changeable grating.
- Grating repeatability for automated turret for 2 pairs of gratings (models MSDD1004 and MSDD1004i): wavelength* = ±0.006 nm; vertical image = ±20 µm.
- Grating repeatability for holder for 1 manually changeable grating (models MSDD1002 and MSDD1002i): wavelength* = ±0.05 nm; vertical image = ±75 µm.
Spectral slits automated (combined)
| Control: | automated (drive) or manual (micrometer) |
| Width: | regulated from 0 up to 2.0 mm |
| Parallelism: | ± 1 µm |
| Accuracy (slit 1 mm): | ± 10 µm |
| Repeatability: | ± 1 µm |
| Reading accuracy (micrometer): | 2 µm |
| Step size: | 0.5 µm |
| Height: | diaphragm-regulated from 0 up to 10 mm with division value of 0.5 mm |
- Control: automated (drive) or manual (micrometer).
- Width: regulated from 0 up to 2.0 mm.
- Parallelism: ±1 µm.
- Accuracy (slit 1 mm): ±10 µm.
- Repeatability: ±1 µm.
- Reading accuracy (micrometer): 2 µm.
- Step size: 0.5 µm.
- Height: diaphragm-regulated from 0 up to 10 mm with division value of 0.5 mm.
Spectral slits (manually operated)
| Control: | manual (micrometer) |
| Width: | regulated from 0 up to 2.0 mm |
| Parallelism: | ± 1 µm |
| Accuracy (slit 1 mm): | ± 10 µm |
| Repeatability: | ± 1.5 µm |
| Reading accuracy (micrometer): | 2 µm |
| Height: | diaphragm-regulated from 0 up to 10 mm with division value of 0.5 mm |
- Control: manual (micrometer).
- Width: regulated from 0 up to 2.0 mm.
- Parallelism: ±1 µm.
- Accuracy (slit 1 mm): ±10 µm.
- Repeatability: ±1.5 µm.
- Reading accuracy (micrometer): 2 µm.
- Height: diaphragm-regulated from 0 up to 10 mm with division value of 0.5 mm.
Ports
| Number of ports: | 2 input, 2 output |
| Output port repeatability (automated mirror)*: | ± 0.01 nm |
| Switching time (input port): | 4 s |
| Switching time (output port): | 4 s |
- Number of ports: 2 input, 2 output.
- Output port repeatability (automated mirror)*: ±0.01 nm.
- Switching time (input port): 4 s.
Switching time (output port): 4 s.
Integrated shutter
| Number: | 2 (in each input port) |
| Shut time: | ~100 ms |
| Maximal frequency: | 1 Hz |
| Control: | on-board CPU or TTL-signals from the external device |
- Number: 2 (in each input port).
- Shut time: ~100 ms.
- Maximal frequency: 1 Hz.
- Control: on-board CPU or TTL-signals from the external device.
Control
| Central control: | on-board CPU |
| External control: | PC |
| External interface: | Ethernet |
- Central control: on-board CPU.
- External control: PC.
- External interface: Ethernet.
Dimensions
| Overall sizes (L х W х H): | 556 х 324 х 340 mm |
| Weight: | 35 kg (may differ, depends on configuration) |
- Overall sizes (L х W х H): 556 х 324 х 340 mm.
- Weight: 35 kg (may differ, depends on configuration).
* The characteristics are given for grating 1200 lines/mm, slit width 15 μm, wavelength 546 nm.