Monochromator-spectrograph M266 is available for order in the double-dispersive scheme modification – Double M266: in that case, the output slit of the first M266 becomes the input slit of the second M266.
Due to larger focal length and dispersion addition, the twice-better spectral resolution and lower stray light are achieved.
Effective transmission of radiation from a source into monochromators can be realized with variety of options, such as spherical and toroidal optics, optical fibers.
Upon your request, spectral slit with blackened blades can be supplied.
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Parameter
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Value
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Optical scheme
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Optimized Czerny-Turner with one optical input and two outputs
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Spectral range
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Typical 190 – 3600 nm (refer to the specification below)
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F/Number
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1 : 3,8
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Focal length, mm
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568
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Flat field on the lateral port of the first M266, mm
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30 x 10
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Flat field on the lateral port of the second M266, mm
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6 x 10
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Imaging
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Option. Available on both output ports.
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Diffraction gratings
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50 x 50 x 10 mm, one grating or a turret with 4 gratings from the list below
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Grooves/mm 1)
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2400
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1800
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1200
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600
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400
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300
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reciprocal linear dispersion (Average value), nm/mm 2)
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0,79
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1,06
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1,59
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3,19
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3,16
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4,8
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4,7
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6,37
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6,32
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Blaze wavelength, nm
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225
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270
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400
|
750
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1000
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800
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1700
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1500
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2000
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Spectral range, nm 3)
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190-450
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190-540
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265-800
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500-1500
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660-1800
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530-1600
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1130-2600
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1000-3000
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1330-3600
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Multichannel array bandpass on the output, nm
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3,8 4)
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5,2 4)
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7,6 4)
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15 4)
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8 4)
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23 4)
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12 5)
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16 5)
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16 5)
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Spectral resolution on the output, nm
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<0,05 4)
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<0,08 4)
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<0,11 4)
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<0,22 4)
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<0,22 4)
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<0,35 4)
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<0,35 5)
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<0,47 5)
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<0,47 5)
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Entrance/exit slits
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Refer to M266 specifications
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Intermediate slit width
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5
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Filter wheel
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Refer to M266 specifications
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Integrated shutter
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Program-controlled, serves for measuring dark signal
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Computer interface
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High-Speed USB Computer interface
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1) Upon your request diffraction gratings differing from the above can be used
2) Reciprocal linear dispersion is indicated for blazing wavelength
3) Wavelength range for which diffraction efficiency exceeds 40%
4) For detector with 24 µm pixel size and 24.5 mm length of active area
5) For detector with 25 µm pixel size and 12.8 mm length of active area
