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Products / Light Analysis /Monochromators & Spectrographs /1/8m Monochromator/Spectrograph /

1/8m Monochromator/Spectrograph

Overview Features Specification Downloads & Drivers CM Accessories Order Now!

The CM Series is a one-eighth meter, Czerny-Turner type monochromator/spectrograph. This Series is made up of a group of products: The CM110/112 Monochromator and the CMSP110/112 spectrometer. The focal lengths of both the Monochromator and Spectrometer offered is 110mm. Unlike other small devices that provide only one optical orientation, the Digikröm CM/CMSP 110 can accommodate both a straight through and a right-angle orientation from the source. For more information on right angle orientation, download the manual or open the Features tab.

CM 110 Monochromator / Spectrographer

Single piece base construction, direct grating drive, and anti-backlash gearing ensure the unit is rugged and stable enough for demanding applications. Loaded with SP Optics and able to hold two high quality gratings, the CM110 is optimal for spectrometry in the UV to IR spectra with the necessary optics available.

Visit the Specification Sheet Tab for details on performance and resolution.

CM 120 Monochromator / Spectrographer

The CM112 are two single monochromators in series. The exit slit of the first monochromator is the entrance slit of the second. The two monochromators act as a double filter with the rejection of stray light being almost the square of the single monochromator value. As an additive instrument, the first grating spreads the spectrum over an angular range while the second grating then doubles this dispersion, achieving twice the resolution of a single 1/8m monochromator. As a subtractive instrument, the first monochromator selects a bandpass wihle the second monochromator then removes the temporal and angular aberrations introduced by the angular spectral dispersion in the first monochromator.

The CM112 supercedes ordinary monochromators with its second substractive monochromator which can recombine multiple wavelenghts in the bandpass and instead of creating multiple, overlapping images, it creates a clear image. Also, its subtractive dispersion mode can also utilize its second monochromator to equalize the optical path lengths such that broadening is reduced to a minimum.

CM/CMSP110

§ Compact size (5.25 x 3.25 x 3.25 inches) & Connection to computer via RS 232 interface.

§ Scans in both directions.Programmable in Angstrom, nanometres, microns, wavenumbers, or eV.

§ Double-grating turrets allows for broad spectral range coverage.

§ User can change slit independently

§ May be factory configured as a monochromator or a spectrograph

§ Monochromator can also be factory configured for right angle or straight through beam path.

Application

Suitable for fluorescence, radiometry, process control, colorimetry, tuneable filtering, Raman spectroscopy, among others;

CM/CMSP112

§ Compact Size (5.25 x 6.25 x 3.25 inches) & Connection to computer via RS 232 interface.

§ Scans in both directions. Programmable in Angstrom, nanometres, microns, wavenumbers, or eV.

§ Dual double-grating turrets with automatic grating change allows for broad spectral range coverage.

§ May be factory configured as a monochromator or a spectrograph

§ Monochromator can also be factory configured for right angle or straight through beam path.

Application

Subtractive dispersion mode minimizes image distortion and pulse spread, with sub-picosecond residual broadening of regular monochromators.

Additive mode gives increased dispersion and low stray light for Raman fluorescence studies

Services Provided

Changing of Gratings

For change of grating services, Please Contact Us.

Converting to a Spectrograph

The CM series products can be converted to be used as spectrograph mode when using a CCD camera. This unit has significant design differences, such as a different focusing mirror and exit port adapter.

Contact us for a quote on converting your CM110/112 to a CMSpectral Products110/112 or vice versa.

Product Brochures:

CM 1.8 110 | CM 1.8 112

General Specifications

Model	CM110	CM112
Operational Wavelength	Operational from UV to IR range with corresponding optics.
Design	Czerny-Turner: Dual Grating Turrets	Double cascaded Czerny-Turner: Dual Grating Turrets
Focal Length	110mm each section
f/#	3.9
Beam Path	Standard: Straight through. On Request: Right angle.
Wavelength Drive	Worm and wheel with micro-processor control and anti-backlash gearing	Dual worm and wheel with micro-processor control and anti-backlash gearing
Wavelength Precision	0.2nm (with 1200gv/mm grating)	0.1nm (Additive) 0.2nm (Subtractive)
Wavelength Accuracy	±0.2nm (with 1200gv/mm grating)	±0.3nm (Additive) ±0.6nm (Subtractive)
Slewing Speed	>100nm/s
Stray light	<10^-5	<10^-9
Slits	Standard set includes: 0.125mm, 0.15mm, 0.3mm, 0.6mm, 1.2mm & 2.4mm x 4.0mm. For other sizes, please Contact us.
Max Resolution	Please Inquire for grating - resolution calculation. Web Calculator Coming Soon!	<0.5nm(Additive) <1nm(Subtractive) ~1nm (with 120gv/mm grating and 0.15mm slit)
Band Pass	~1nm (with 1200gv/mm grating and 0.15mm slit)
Gratings	1-2 gratings (30x30mm) must be purchased. See Gratings (CM) page. Click here to view Gratings.	2 or 4 gratings (30x30mm) must be purchased. See Gratings (CM) page* Click here to view Gratings.
Software	Demonstration control program and LabView Driver included
Power	UL Listed 110 / 220V power pack
Interface	Standard: RS232
Weight	1.15 kg	2.3kg
Warranty	1 Year
Accessories	·Handheld control module with function keys and display for local control. ·RS232 to USB interface cables ·Gold optics See accessories for more options. Click here for accessories.

Gratings and Optical Resolutions

Part #	Ruling (g/mm)	Peak (nm)	Range (nm)	Peak T%
AG2400-00240-303	2,400	240	180 - 680	70
AG1200-00400-303	1,200	400	350 - 900	80
AG1200-00500-303	1,200	500	350 - 1,000	83
AG1200-00600-303	1,200	600	400 - 1,500	80
AG1200-00750-303	1,200	750	480 - 1,500	85
AG0600-00500-303	600	500	350 - 1,300	80
AG0600-01200-303	600	1,200	800 - 3,000	85
AG0300-00500-303	300	500	310 - 1,100	80
AG0300-02500-303	300	2,500	1,500 - 6,000	88
AG0150-00500-303	150	500	320 - 980	72
AG0150-04000-303	150	4,000	2,500 - 9,000	93
AG0075-08000-303	75	8,000	5,000 - 15,000	82
AG0075-01700-303	75	1,700	1,100 - 2,800	85
AG0045-01750-303	45	1,750	1,100 - 3,300	78

Schematic

Terminology Guide

Wavelength Precision

It is the ability of the device to return to the same wavelength. The measured wavelength by the equipment should not drift over the range provided.

Wavelength Accuracy

It is a measure of the deviation of the wavelength when the standard wavelength is measured. You would expect the vaue of the wavelength to be the standard value with the deviation everytime you take a measurement.

Wavelength Resolution

It is the the ability of the instrument to differentiate between different wavelength of light.

Slewing speed

It is the rate which the wavelength is being read.

Band pass

The range of frequencies or wavelengths that can pass through the slits.

Software Downloads:

Manual:

CM110/112 User Manual

Software

CM110_Demo_Labview2012_2018_Source.zip

CM110/112 Demo Labview 2012 Executable

CM110/112 Labview Executable Demo

CM110/112 Labview Demo Source Code
CM110/112 Labview GPIB Executable Demo
CM110/112 Labview GPIB Source Code
Labview Runtime Engine NOTE: please install the Labview Runtime Engine and Labview Full Visa (the latest version), if your computer doesn't have any of these.
Labview VISA

CM110/112 Visual Basic Executable Demo
CM110/112 Visual Basic Demo Source Code
CM110/112 Visual C++ Executable Demo
CM110/112 Visual C++ Source Demo
Monochromator Full CD Software Installation

CM Accessories
Part N/O	ITEM	Description
CM1201	Controller: Handheld control module	Handheld control module: 2 Line x 20 character LCD display. Allows local operation of CM110/CM112 monochromators and CMSP 110/112 spectrographs
AB202	Filter Mount	Single filter carrier that mounts directly between CM unit and accessories
IR110	IR coating for internal optics	For use with CM110. Infrared (gold) coatings on CM110 mirrors. Enhances transmission by up to 40% between 600 - 1100nm. (Not suitable for work below 600nm)
IR112	IR coating for internal optics	For use with CM112. Infrared (gold) coatings on CM112 mirrors. Enhances transmission by up to 80% between 600 - 1100nm.
Special Slit Sizes	Special Slit Size	CMFS 010 Pair: 10µm slits CMFS 020 Pair: 20µm slits CMFS 025 Pair: 25µm slits CMFS 050 Pair: 50µm slits
MCL-100	Collimator: Universal Output Conditioner	An output module designed to work with both CM and DK model monochromators. The adjustable position of the internal lens allows the user to condense or collimate for UV to NIR wavelengths.

Click here to access and purchase from the Accessories Page.

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	Availability	Reference Price (USD)
CM110 1/8 meter Compact Monochromator	4-6 Weeks	Request for quote
CMSP110 1/8 meter Compact Spectrograph	4-6 Weeks	Request for quote
CM112 Double 1/8 meter Compact Monochromator	4-6 Weeks	Request for quote
CMSP112 Double 1/8 meter Compact Spectrograph	4-6 Weeks	Request for quote