M700 Monochromator/Spectrograph
• 750mm focal length
• Two input and three output ports
• Fully automated control
The M700 is a multifunctional long-focal-length, high-resolution monochromator/spectrograph designed for the widest range of research applications.
The M700 is fully automated, features excellent spectral line quality, and minimal stray light levels.Thanks to a wide selection of options, the M700 can be easily adapted for any application, and its robust mechanics guarantee high accuracy and reproducibility of results.
• Raman spectroscopy
• High-resolution fluorescence spectroscope
• Emission spectroscopy, including UV-range down to 180nm
• Multichannel (Imaging) spectroscopy
• Tunable light sources with narrow spectral bandwidth
• Other applications requiring high spectral resolution
depends on the intended purpose, is approved at the order placement stage, and may include:
- Up to two input ports; each input port contains an automated shutter for dark signal subtraction;
- Imaging astigmatism compensation on the side input port (option);
- Up to three output ports with the possibility of installing either spectral slits or multi-element detectors;
- Up to 4 diffraction gratings on an automated turret;
- Order-sorting filter turret for operation in the spectral range from 180nm to 2500nm;
- Crossed automated spectral slits (adjustable pinhole, option);
- Choice of optics – for operation in the UV-NIR range, or for the far IR region;
- Linear and array image sensors, single-element detectors;
- Optical-mechanical assemblies for collecting radiation from a sample and focusing into an optical fiber, for inputting radiation from a fiber into the monochromator, for forming beams at the monochromator output, for focusing into an optical fiber, etc.;
- Aberration-free mirror condensers for focusing light source radiation onto the entrance slit of the monochromator without using optical fibers;
- Connector for optional inert gas purge. Purge is recommended when operating in the UV spectral region of 180-220nm to eliminate the effect of radiation absorption by oxygen present in the air.
Astigmatism compensation (Imaging)
High-end optics and aperture size provide low stray light enhancing the quality of the obtained spectroscopic data. With standard optics, a vertical line segment is formed in the plane of the exit slit from a conditional point on the entrance slit of the monochromator. For the M700 monochromator, the size of this aberration-induced line segment is 1.4-1.6 mm.
For low-signal applications, we offer Imaging optics to correct astigmatism in order to increase system sensitivity. The size of the residual aberration segment for the M700 in the Imaging configuration is 30 μm in the center of the field and 150 μm at the edges of the field. For the M700 model, the Imaging option is available for the side input port. Accordingly, if the side input port is used for radiation input, all three output ports will have astigmatism correction. If the direct input port is used, all three output ports will be without astigmatism aberration correction. It should be noted that the use of Imaging optics may be accompanied by some degradation of resolution.
The unified Photonics.SP software
is used to control the monochromator and detectors and includes all the functions necessary for operation:
- automatic scanning
- automatic switching of diffraction gratings and filters
- adjustments of slit width
- input and output ports selection
- automatic background subtraction using automatic shutter
- connection of monochromator with multichannel and singe-channel detectors from specification; registration parameters setting
- registration, editing and processing of spectra
- automatic software stitching of spectral segments recorded by a multi-element detector at different positions of the diffraction grating; automatic calculation of the number of scans and grating positions depending on the specified spectral range.
- ability to create, save, and edit additional user-defined wavelength calibration;
- operation of detectors in forward and reverse synchronization mode with configured parameters;
- data saving, as well as export of spectra in CSV, BMP, and PNG formats;
- DLL and SDK are part of the standard M700 package.
М700 sizes
Specification
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Optical scheme |
Optimized Czerny-Turner with two inputs and three outputs |
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Spectral range |
190 – 12 000 nm (depends on the chosen diffraction gratings) |
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Aperture ratio |
1 : 9.1 |
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Focal length, mm |
750 |
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Flat field, mm |
30 x 10 |
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Input port |
Up to 2 |
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Output port |
Up to 3 |
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Imaging (astigmatism compensation) |
Option, available for the output ports |
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Vertical magnification (standard optics) |
1.0 |
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Vertical magnification (Imaging optics) |
1.1 |
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Entrance and Exit Slits |
Automatic and manual controlled |
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- slit width, mm |
0 – 2 (0 – 5 available optionally) |
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- slit height, mm |
12 |
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- parallelism, um |
+/- 1 |
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- micrometer reading accuracy, um |
2 (5 um for the 5 mm slit width) |
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- step size, um |
0.1 |
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- precision, um |
+/- 5 (12.5 for the 5 mm slit width) |
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Filter wheel |
8 positions, 5 filters Ø20mm, automatic controlled |
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Intergrated shutter |
Software controlled, for the dark signal measuring |
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Computer interface |
High-Speed USB |
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Size, mm3 |
899×680×302 |
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Diffraction gratings
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Diffraction gratings1) |
80x70x10mm, automated turret, up to 4 gratings in the set |
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- lines per mm |
2400 |
1800 |
1200 |
600 |
600 |
300 |
150 |
150 |
100 |
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- blazed at, nm |
250 |
270 |
400 |
750 |
1000 |
1500 |
4500 |
475 |
500 |
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- spectral range2) , nm |
190-450 |
190-540 |
266-800 |
500-1500 |
660-2000 |
1000-3000 |
3000-9000 |
310-950 |
330-1000 |
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- mechanical range, nm |
0 – 700 |
0 – 900 |
0 – 1400 |
0 – 2800 |
0 – 2800 |
0 – 5600 |
0 – 11200 |
0 – 11200 |
0 – 16800 |
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- reciprocal linear dispersion (average)3), nm/mm |
0.5 |
0.69 |
1.03 |
2.05 |
2.0 |
4.1 |
7.9 |
8.7 |
13.0 |
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- spectral resolution (average)3), nm |
0.0164) <0.0365) |
0.024) <0.055) |
0.0294) <0.075) |
0.0584) <0.155) |
0.0564) <0.156) |
<0.36) |
<0.257) |
0.34) <0.65) |
0.424) <0.95) |
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- multichannel array bandpass (average)3), nm |
14.304) 12.205) |
19.704) 16.905) |
29.54) 25.25) |
58.74) 50.25) |
57.34) 25.65) |
52.4 6) |
- |
2494) 2135) |
3724) 3185) |
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- accuracy, nm |
±0.008 |
±0.01 |
±0.015 |
±0.03 |
±0.03 |
±0.06 |
±0.12 |
±0.12 |
±0.18 |
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- repeatability, nm |
±0.004 |
±0.005 |
±0.008 |
±0.015 |
±0.015 |
±0.03 |
±0.06 |
±0.06 |
±0.09 |
1) Or other diffraction grating on request
2) Spectral range with diffraction efficiency more than 40%
3) Rec.lin.dispersion, bandpass and resolution are indicated for the wavelength in blaze
4) For detector with 7um pixel size and 28.672mm active area (Hamamatsu S13496)
5) For detector with 24um and 24.5mm area size
6) For detector with 25um and 12.8mm area size
7) For single-channel detector with 10um slit width