OBB Monochromator

Monochromator Specifications


Specifications Using standard 1200 line/mm ruled grating

Focal length 200 mm
Aperture ratio f/4 (calculated using grating width)
Wavelength range 180 nm to 24 microns (grating dependent)
Bandpass Continuously adjustable from 0 to 25 nm (1,200 g/mm)
Reciprocal linear dispersion at slit 4 nm/mm (1,200 g/mm)
Resolution 0.25 nm (1,200 g/mm)
Throughput Approximately 60% at 300 nm
Scattered light 0.02% two bandwidths from 365 nm Hg line
Stray Light 10 -4 (typical)
Accuracy +/-1 nm (using manual wavelength control)
Accuracy +/- 0.25 nm (using motorizing option under computer control)
Reproducibility +/-0.25 nm
Optical path height 76 mm
Grating size 50 x 50 mm
Slit adjustment 0 to 6 mm width (manual micrometer with digital readout)
0 to 21 mm height (manual slider)


Monochromator Dimensions

Length 241 mm long (9.5 inches)
Width 272 mm wide (10.7 inches)
Height 115 mm high (4.5 inches)
Weight 7.3 kg (16 lbs)


Digital Slit Assembly Dimensions

Length 10 mm thick
Width 85 mm wide
Height 180 mm high of which 113 mm (4.4 inches) is above the lid of the monochromator


Optional Motor Controller Specifications

Power supply Universal power supply included
TTL Output Synchronization TTL output each time motor stops
Stepper Motor Two phase motor 1 A per phase, 200 steps per revolution, 1.8 degree per step
Maximum Motor Speed 1200 RPM with zero torque
Maximum Speed with Mono 15,000 nm per minute
Stepping Motor Voltage 5–12 V
Stepping Modes Full, Half and Micro steps: 1/8, 1/16, 1/32, 1/64 computer selectable
Slew Rate 1 to 62,500 micro steps per second
Calibration Auto calibration of wavelength
Ramping Linear ramping rate for heavy duty, fast, precision operation


For more information on OBB's Monochromator visit the Monochromator Applications page.

OBB has a policy of continuous product development and reserves the right to amend part numbers, descriptions and specifications without prior notice.

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HORIBA Scientific
Optical Building Blocks
3880 Park Avenue
Edison New Jersey

Tel: 732-494-8660
Fax: 732-623-8129