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High-Speed Monochromator

Photonics.com
Apr 2015
Shimadzu Corp.Request Info
 
KYOTO, Japan, April 7, 2015 — Shimadzu SPG-120-REVFor high-speed optical spectrometry applications, Shimadzu Corp. has introduced a compact monochromator system that achieves wavelength changes 10 times faster than conventional models.

The SPG-120-REV features a stepper motor that directly drives the diffraction grating, providing a wavelength positioning speed of 500 nm/s. This increases throughput for applications that require measurements of large numbers of samples, multiwavelength analysis of individual samples, and 2-D mapping of the surfaces of materials and devices. A 150-W xenon lamp provides the light source.

Applications include in-line inspection of flat panel displays and food, monitoring vacuum evaporation of thin films, spectral mapping of solar cell materials and optical devices, and evaluation of spectral characteristics of cameras.


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GLOSSARY
monochromator
Also known as monochromatic illuminator. An instrument for isolating narrow portions of the spectrum. The spectrum of any light source is formed by a prism or grating, and an exit slit placed in the spectrum selects a narrow band of wavelengths for emission. By moving the spectrum of a source internally past the slit, the color of the emitted light can be varied at will. As most monochromators emit several percentages of unwanted light -- either white or of the wrong wavelength -- along with...
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