MS200
Description
Specification
Configurations
Diffraction gratings
Specification of monochromator-spectrograph MS200
Габаритный чертеж монохроматора-спектрографа серии MS200
Dimensional drawing of MS200 monochromator-spectrograph

Optical system

Optic layout:Cherny-Turner
(astigmatism-compensated in models MS2001i and MS2004i)
Ports:1 input and 2 output
Wavelength range:185 nm – 60 µm (determined by used gratings)
F/number (entrance):1/3.6
Focal length (output):200 mm
Scanning range limited by the grating rotation angle*:0 – 1300 nm
Basic mirrors:spherical
Stray light:3 х 10-5 (20 nm from laser line 632.8 nm)
Focal plane:26 х 10 mm
  • Optic layout: Cherny-Turner (astigmatism-compensated in models MS2001i and MS2004i).
  • Ports: 1 input and 2 output.
  • Wavelength range: 185 nm — 60 µm (determined by used gratings).
  • F/number (entrance): 1/3.6.
  • Focal length (output): 200 mm.
  • Scanning range limited by the grating rotation angle*: 0 — 1300 nm.
  • Basic mirrors: spherical.
  • Stray light: 3 х 10-5 (20 nm from laser line 632.8 nm).
  • Focal plane: 26 х 10 mm.

Optical scheme is optimized for:

  • minimization of coma aberration over the whole operating spectral range;
  • elimination of the light re-entrance from two basic mirrors;
  • elimination of the light re-entrance between mirrors of the instrument and input windows of the detectors in the focal plane;
  • a large plane focal field for the whole operating spectral range;
  • astigmatism compensation for the whole operating spectral range by means of special correcting optics (for imaging modifications MS2004i and MS2001i).

Imaging

Model:MS2001MS2004MS2001iMS2004i
Horizontal magnification:1.181.181.181.18
Vertical magnification:1.481.48
Vertical spatial resolution:< 40 µm< 40 µm
  • Model MS2001: horizontal magnification = 1.18
  • Model MS2004: horizontal magnification = 1.18
  • Model MS2001i: horizontal magnification = 1.18; vertical magnification = 1.48; vertical spatial resolution less than 40 µm
  • Model MS2004i: horizontal magnification = 1.18; vertical magnification = 1.48; vertical spatial resolution less than 40 µm
Спектральное изображение полученное на монохроматоре-спектографе MS2004i
Увеличенная часть спектрального изображения
Spectral image obtained with Imaging monochromator-spectrograph MS2004i (diffraction grating 1200 l/mm, light source – mercury-helium lamp, multi-channel fiber bundle, fiber core diameter 200 µm, CCD pixel size 24×24 µm). 1 – acquired spectral image in full; 2 – zoomed in part of the spectral image.
More information about image quality

Optics characteristics*

Reciprocal dispersion:4.12 nm/mm
Spectral resolution:
PMT (slit width 10 µm):0.11 nm
Digital camera (12 µm pixel):0.12 nm
Repeatability:± 0.036 nm
Wavelength accuracy:± 0.07 nm
Average scanning step:0.012 nm
  • Reciprocal dispersion: 4.12 nm/mm
  • Spectral resolution: PMT (slit width 10 µm) = 0.11 nm; digital camera (12 µm pixel) = 0.12 nm
  • Repeatability: ± 0.036 nm
  • Wavelength accuracy: ± 0.07 nm
  • Average scanning step: 0.012 nm

Drive specifications

Motor:micro-stepper
Drive:worm
Step size:1.6 arc seconds
Precision:± 1 step
Maximal speed:10000 steps/s
  • Motor: micro-stepper.
  • Drive: worm.
  • Step size: 1.6 arc seconds.
  • Precision: ± 1 step.
  • Max. speed: 10000 steps/s.

Diffraction gratings

Size:40 x 40 x 6 mm
Rotation:about the center of grating working surface
Mounting in models MS2004 and MS2004i:automated 4-grating turret
Mounting in models MS2001 and MS2001i:positioner for 1 manually changeable grating
Grating repeatability for the automated 4-grating turret (models MS2004, MS2004i):
wavelength*:± 0.03 nm
vertical image:± 40 µm
Grating repeatability for 1 manually changeable grating holder (models MS2001, MS2001i):
wavelength*:± 0.05 nm
vertical image:± 40 µm
  • Size: 40 x 40 x 6 mm.
  • Rotation: about the center of grating working surface.
  • Mounting in models MS2004 and MS2004i: automated 4-grating turret.
  • Mounting in models MS2001 and MS2001i: positioner for 1 manually changeable grating.
  • Grating repeatability for the automated 4-grating turret (models MS2004, MS2004i): wavelength* = ± 0.03 nm; vertical image = ± 40 µm.
  • Grating repeatability for 1 manually changeable grating holder (models MS2001, MS2001i): wavelength* = ± 0.05 nm; vertical image = ± 40 µm.

Spectral slits

Width:automated (drive) or manual (micrometer)
Parallelism:regulated from 0 up to 2.0 mm, ± 1 µm
Accuracy (slit 1 mm):± 10 µm
Repeatability:± 1 µm (± 1.5 µm – hand slot)
Reading accuracy (micrometer):2 µm
Step size:0.5 µm
Height:diaphragm-regulated from 0 up to 10 mm
  • Width: automated (drive) or manual (micrometer).
  • Parallelism: regulated from 0 up to 2.0 mm, ± 1 µm.
  • Accuracy (slit 1 mm): ± 10 µm.
  • Repeatability: ± 1 µm (± 1.5 µm — hand slot).
  • Reading accuracy (micrometer): 2 µm.
  • Step size (automated slot): 0.5 µm.
  • Height: diaphragm-regulated from 0 up to 10 mm.

Ports

Number of ports:1 input, 1 or 2 output
Wavelength reproducibility of output port positioning (automated mirror)*:± 0.03 nm
Output port switching time:5 sec
  • Number of ports: 1 input, 1 or 2 output.
  • Wavelength reproducibility of output port positioning (automated mirror)*: ± 0.03 nm.
  • Output port switching time: 5 sec.

Integrated shutter

Shut time:~100 ms
Maximal frequency:1 Hz
Control:on-board CPU
  • Shut time: ~100 ms.
  • Maximal frequency: 1 Hz.
  • Control: on-board CPU.

Control

Central:on-board CPU
External:PC
External interface:Ethernet
  • Central: on-board CPU.
  • External: PC.
  • External interface: Ethernet.

Overall sizes

Overall sizes (L х W х H):300 х 200 х 160 mm
Weight:9 kg (standard configuration)
  • Overall sizes (L х W х H): 300 х 200 х 160 mm.
  • Weight: 9 kg (standard configuration).

* The characteristics are given for grating 1200 lines/mm, slit width 15 μm, wavelength 546 nm.