MONOCHROMATOR DMO160

        

DMO160 is a high-aperture double monochromator with dispersion subtraction. It is an instrument with F-number of 3.5 and input focal length of 160 mm.

The wavelength tuning is motorized and controlled by PC via RS-232 interface.

The monochromator uses the optical schematic with as few as four optical components and an intermediate slit ensuring low stray light and high aperture ratio. The concave diffraction gratings with a variable lines density allow astigmatism compensation in the DMO160 double monochromator.

Specification

Optical system
Optical scheme	Original, with dispersion subtraction
F-number	3.5
Focal length (output)	160 mm
Stray light (using halogen lamp with     350 nm cut-off  filter)	< 0.01%
Stray light (20 nm from laser line)	10-7
Spectral slits
Control	manually operated
Width	4 fixed positions
Entrance and intermediate	0.22; 0.54; 1.1; 1.6 mm
Output	0.44; 1.08; 2.2; 3.2 mm
Height	6 mm
Optics
Reciprocal linear dispersion for the first monochromator (wavelength 546 nm)	5.2 nm/mm
Spectral resolution (width of the entrance and intermediate slits 0.22 mm)	1.3 nm
Repeatability	± 0.1 nm
Wavelength accuracy	± 0.25 nm
Average scanning step	0.025 nm
Dimensions, power requirements
Overall sizes (LхWхH)	419 х 140 х 175 mm
Weight	8 kg
Electric requirements	100 - 230 V, 50/60 Hz
Power consumption	20 W