CM112 1/8m單光儀

CM112 1/8m 整合型雙單光儀

The CM112 is 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.

    The CM112 may be factory configured as an additive or subtractive dispersion double monochromator. As an additive instrument, the first grating spreads the spectrum over an angular range; the second grating then doubles this dispersion. The result is twice the resolution of a single 1/8 meter monochromator. As a subtractive instrument, the first monochromator selects a bandpass, the second monochromator then removes the temporal and angular aberrations introduced by the angular spectral dispersion in the first monochromator.

    The CM112 offers a solution to practical problems in monochromatic imaging. Selecting a monochromatic image with an ordinary monochromator fails because multiple wavelengths in the bandpass create multiple, overlapping images. In the CM112, the second subtractive monochromator recombines these multiple images, creating a clear image.

    Finally, the CM112 is a unique solution to practical problems in the spectroscopy of pulsed sources. An ordinary monochromator has a spread in the internal optical path lengths that will introduce a 25 to 100 picosecond broadening in light pulses that are passed through the monochromator. In the subtractive dispersion CM112, the second monochromator equalizes the optical path lengths so that broadening is reduced to a minimum.

  • Outline Dimension


  • Features

  • Compact Size: Only 5.25 x 6.25 x 3.25 inches
  • Connects to any computer via RS 232
  • Scans in both directions. Programmable in Angstrom, nanometers, microns, wavenumbers, or eV
  • Dual double-grating turrets with automatic grating change allows for broad spectral range coverage
  • 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
  • May be configured as a monochromator or a spectrograph
  • Monochromator may be factory configured for right angle or straight through beam path

  • Specifications
Model CM112
Design Double cascaded Czerny-Turner
Double grating turrets standard in each section
Focal Length 110mm each section
f/# 3.9
Beam Path

Straight through standard

Right angle provided on request
Wavelength Drive

Dual worm and wheel with electronic synchronization and computer control.

Programmable in additive or subtractive dispersion with positive or negative gratings orders.
Wavelength Precision

0.1nm (Additive)

0.2nm (Subtractive)
Wavelength Accuracy

± 0.3nm (Additive)

± 0.6nm (Subtractive)
Slewing Speed > 100nm/s
Stray Light <10-9
Slits Standard set includes: 0.125mm, 0.15mm, 0.3mm, 0.6mm, 1.2mm, and 2.4mm x 4.0mm. For other sizes, please consult us
Max Resolution < 0.5nm (Additive)
< 1nm (Subtractive)
Band Pass ~1nm (with 1200gv/mm grating and 0.15mm slit)
Gratings 2 or 4 gratings (30 x 30mm) must be purchased
Software Demonstration control program and LabView driver included
Power UL listed 110 / 220V power pack
Interface standard: RS 232
Weight 2.3kg
Warranty 1 year

CM series Standard Gratings (30 x 30mm)
Part # Ruling (g/mm) Peak (nm) Range (nm) Peak T%
AG2400-00240-303 2,400 240 180 - 680 70
AG1200-00500-303 1,200 500 330 - 1000 83
AG1200-00600-303 1,200 600 400 - 1500 80
AG1200-00750-303 1,200 750 480 - 1500 85
AG0600-00500-303 600 500 350 - 1300 80
AG0600-01200-303 600 1200 800 - 3000 85
AG0300-00500-303 300 500 310 - 1100 80
AG0300-02500-303 300 2500 1500 - 6000 88
AG0150-00500-303 150 500 320 - 980 72
AG0150-04000-303 150 4000 2500 - 9000 93
AG0075-08000-303 75 8000 5000 - 15000 82
AG0075-01700-303 75 1700 1100 - 2800 85
AG0045-01750-303 45 1750 1100 - 3000 78
NOTE: Ruled gratings blazed at other wavelengths and holgrahic gratings are available on request.
Response curves also available upon request.

Accessories for CM Series
Models Description
CM1201 Hand-held control module for CM110/112
CMFS020 Special 20цm wide by 2mm tall slit pair for CM Series
CMFS050 Special 50цm wide by 2mm tall slit pair for CM Series
CMFS100 Fixed Slit Set W=.125mm,.15mm,.30mm.,.60mm,1.2mm,2.4mm, H=4mm
CMFS100-0125 Individual Fixed Slit W=.125mm, H=4mm
CMFS100-0150 Individual Fixed Slit W=.15mm, H=4mm
CMFS100-0300 Individual Fixed Slit W=.30mm, H=4mm
CMFS100-0600 Individual Fixed Slit W=.60mm, H=4mm
CMFS100-1200 Individual Fixed Slit W=1.2mm, H=4mm
CMFS100-2400 Individual Fixed Slit W=2.4mm, H=4mm
IR110 Infrared (gold) coatings for CM110 mirrors
IR112 Infrared (gold) coatings for CM112 mirrors
LRMIR110 SP's Low Reflection Material option with higher absorption for the IR range, for CM110
LRMIR112 SP's Low Reflection Material option with higher absorption for the IR range, for CM112
MCL100 Universal Output Conditioner for CM and DK series