M833 - High Resolution Monochromator / Raman Spectrometer

M833 is a unique high-aperture double dispersive monochromator or spectrograph whose compact design combines high spectral resolution intrinsic for long-focus instruments and extremely low stray light which is an essential requirement for Raman spectroscopy, as well as for any other low-light-level applications.

Description 

Features

  • Extremely low stray light
  • Compact long-focus instrument with the unique high aperture
  • Three pairs of gratings
  • Two input and two output ports
  • Full computer control

Applications

  • Laser wavelength control
  • Raman spectroscopy
  • Emission and fluorescence spectroscopy
  • Analytical tasks demanding high resolution in the range from UV to IR
  • Multi-channel spectroscopy

M833 is a unique high-aperture double dispersive monochromator-spectrograph whose compact design combines high spectral resolution intrinsic for long-focus instruments and extremely low stray light which is an essential requirement for Raman spectroscopy, as well as for any other low-light-level applications.

Instrument Configuration

The M833 comprises either one or two input and output ports. Input port may hold either a standard entrance slit, or a crossed entrance slit (optionally). All the spectral slits are automated; their width is adjusted by the instrument software. The slit design also contains a microscrew, which provides the possibility to manually adjust the opening width of the slit knives.

The standard M833 version comprises three pairs of diffraction gratings mounted on two turrets. Since the M833 implements separate control for scanning and grating changing, each diffraction grating, when scanning the spectrum, rotates around an axis passing through its center. This allows to bring your real optical system close to the initial optical design and to provide its highest optical quality.

The standard optics comprises spherical and flat mirrors with Al+MgF2 coating optimized for high UV efficiency. Optionally the M833 may contain optics with Al+SiO2 or gold coating for high efficiency in the infrared spectral range.

The M833 output ports may hold either two exit slits, or one exit slit and detector, or two detectors concurrently.

Direct (axial) and lateral (radial) output ports operate alternately. Switching between the output ports is effected by the software with the use of the swinging mirror, which in its operating position directs light to the lateral (radial) output port. The instrument is also available with one output (axial) port. If the radial output port is not used, it is plugged.

Specifications 
Model M833
Optical scheme optimized Czerny-Turner with double dispersion
Spectral range typical 180 – 4800nm (depending on chosen gratings),
up to 40µm when the appropriate gratings are used
Focal length 833 mm
Ports two inputs and two outputs
Imaging option: available for the lateral output port
Diffraction gratings 70 x 70 x 10mm, automated turret with three pairs of gratings from below1)
    Lines/mm1) 2400 1800 1200 900 600 300
    Blaze wavelength, nm 225 400 600 600 1000 2000
    Spectral range, nm 190 - 600 253 - 800 380 -1200 506 - 1600 760 - 2400 1500 - 4800
    Scanning range, nm 0 - 640 180 - 850 0 - 1280 0 - 1710 0 - 2560 0 - 5120
    Spectral resolution, average, nm 0.0122)
0.0243)
0.0162)
0.0333)
0.0242)
0.0483)
0.0322)
0.0663)
0.14) 0.24)
    Spectral resolution, average, cm-1 0.82)
1.563)
0.572)
1.173)
0.42)
0.783)
0.32)
0.63)
0.434) 0.24)
Wavelength accuracy, nm ±0.03 ±0.04 ±0.06 ±0.08 ±0.12 ±0.24
Wavelength reproducibility, nm ±0.006 ±0.008 ±0.012 ±0.016 ±0.024 ±0.048
Integrated shutter computer controlled, serves for measuring dark signal
Computer interface USB

1) Upon your request diffraction gratings with another number of lines and another blaze can be used.

2) For detector with 8 µm pixel size and 29.1 mm active area (resolution is 4 pixels)

3) For detector with 25 µm pixel size and 25.6 mm active area (resolution is 2.5 pixels)

4) For detector with 25 µm pixel size and 12.8 mm active area (resolution is 2.5 pixels)

Options 

The M833 monochromator-spectrograph has a wide range of options and accessories, which allows efficient collection of light from the sample located at a finite distance and in infinity, delivering emission to the monochromator with and without an optical fiber, performing effective aperture matching of the optical fiber and monochromator. All the exit slits are equipped with precision focusing devices; and detector adapters allow easy detector focusing. The detector adapter of the long-focus M833 monochromator-spectrograph allows changing the slope of detector plane relative to the optical bench. Cassegrain lenses allow collecting light from objects located at a distance of 3.5m to infinity. Adapters PS-2 and PS-3 provide for the collection of light from a closely located sample and its effective input into an optical fiber. PS-2 features high transmittance in the UV range, while PS-3 has the possibility of installing an edge filter

  • Order Separating Filters Wheels
  • Aperture Matching Adapters
  • Condensers for collecting light into the fiber
  • Condensers for collecting light into the monochromator
  • Crossed Entrance Slit (optionally installed instead of the Standard Entrance Slit)
  • Optical Fibers
  • Adapters for attaching CCD detectors
  • CCD detectors
  • Cassegrain lenses

Please contact us to select the complete set of the device that best meets the requirement of your instrument complex.

Documents 
Inquiry 
Do you have questions about M833?
Your details will be gathered and handled to respond to your request.
Detailed information on this topic can be retrieved from our privacy policy.
  • Description
  • Specifications
  • Options
  • Documents
  • Inquiry

Features

  • Extremely low stray light
  • Compact long-focus instrument with the unique high aperture
  • Three pairs of gratings
  • Two input and two output ports
  • Full computer control

Applications

  • Laser wavelength control
  • Raman spectroscopy
  • Emission and fluorescence spectroscopy
  • Analytical tasks demanding high resolution in the range from UV to IR
  • Multi-channel spectroscopy

M833 is a unique high-aperture double dispersive monochromator-spectrograph whose compact design combines high spectral resolution intrinsic for long-focus instruments and extremely low stray light which is an essential requirement for Raman spectroscopy, as well as for any other low-light-level applications.

Instrument Configuration

The M833 comprises either one or two input and output ports. Input port may hold either a standard entrance slit, or a crossed entrance slit (optionally). All the spectral slits are automated; their width is adjusted by the instrument software. The slit design also contains a microscrew, which provides the possibility to manually adjust the opening width of the slit knives.

The standard M833 version comprises three pairs of diffraction gratings mounted on two turrets. Since the M833 implements separate control for scanning and grating changing, each diffraction grating, when scanning the spectrum, rotates around an axis passing through its center. This allows to bring your real optical system close to the initial optical design and to provide its highest optical quality.

The standard optics comprises spherical and flat mirrors with Al+MgF2 coating optimized for high UV efficiency. Optionally the M833 may contain optics with Al+SiO2 or gold coating for high efficiency in the infrared spectral range.

The M833 output ports may hold either two exit slits, or one exit slit and detector, or two detectors concurrently.

Direct (axial) and lateral (radial) output ports operate alternately. Switching between the output ports is effected by the software with the use of the swinging mirror, which in its operating position directs light to the lateral (radial) output port. The instrument is also available with one output (axial) port. If the radial output port is not used, it is plugged.

Model M833
Optical scheme optimized Czerny-Turner with double dispersion
Spectral range typical 180 – 4800nm (depending on chosen gratings),
up to 40µm when the appropriate gratings are used
Focal length 833 mm
Ports two inputs and two outputs
Imaging option: available for the lateral output port
Diffraction gratings 70 x 70 x 10mm, automated turret with three pairs of gratings from below1)
Lines/mm1) 2400 1800 1200 900 600 300
Blaze wavelength, nm 225 400 600 600 1000 2000
Spectral range, nm 190 - 600 253 - 800 380 -1200 506 - 1600 760 - 2400 1500 - 4800
Scanning range, nm 0 - 640 180 - 850 0 - 1280 0 - 1710 0 - 2560 0 - 5120
Spectral resolution, average, nm 0.0122)
0.0243)
0.0162)
0.0333)
0.0242)
0.0483)
0.0322)
0.0663)
0.14) 0.24)
Spectral resolution, average, cm-1 0.82)
1.563)
0.572)
1.173)
0.42)
0.783)
0.32)
0.63)
0.434) 0.24)
Wavelength accuracy, nm ±0.03 ±0.04 ±0.06 ±0.08 ±0.12 ±0.24
Wavelength reproducibility, nm ±0.006 ±0.008 ±0.012 ±0.016 ±0.024 ±0.048
Integrated shutter computer controlled, serves for measuring dark signal
Computer interface USB

1) Upon your request diffraction gratings with another number of lines and another blaze can be used.

2) For detector with 8 µm pixel size and 29.1 mm active area (resolution is 4 pixels)

3) For detector with 25 µm pixel size and 25.6 mm active area (resolution is 2.5 pixels)

4) For detector with 25 µm pixel size and 12.8 mm active area (resolution is 2.5 pixels)

The M833 monochromator-spectrograph has a wide range of options and accessories, which allows efficient collection of light from the sample located at a finite distance and in infinity, delivering emission to the monochromator with and without an optical fiber, performing effective aperture matching of the optical fiber and monochromator. All the exit slits are equipped with precision focusing devices; and detector adapters allow easy detector focusing. The detector adapter of the long-focus M833 monochromator-spectrograph allows changing the slope of detector plane relative to the optical bench. Cassegrain lenses allow collecting light from objects located at a distance of 3.5m to infinity. Adapters PS-2 and PS-3 provide for the collection of light from a closely located sample and its effective input into an optical fiber. PS-2 features high transmittance in the UV range, while PS-3 has the possibility of installing an edge filter

  • Order Separating Filters Wheels
  • Aperture Matching Adapters
  • Condensers for collecting light into the fiber
  • Condensers for collecting light into the monochromator
  • Crossed Entrance Slit (optionally installed instead of the Standard Entrance Slit)
  • Optical Fibers
  • Adapters for attaching CCD detectors
  • CCD detectors
  • Cassegrain lenses

Please contact us to select the complete set of the device that best meets the requirement of your instrument complex.

Do you have questions about M833?
Your details will be gathered and handled to respond to your request.
Detailed information on this topic can be retrieved from our privacy policy.

Do you have questions about our products?

Write to us | info@topag.de

Give us a call | +49 6151 42944 0

TOPAG Lasertechnik GmbH
Nieder-Ramstädter Str. 247
64285 Darmstadt, Germany
Phone: +49 6151 42944 0
Fax: +49 6151 42944 11
E-mail: info@topag.de