optical spectrometer


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optical spectrometer

[′äp·tə·kəl spek′träm·əd·ər]
(spectroscopy)
An optical spectroscope that is provided with a calibrated scale either for measurement of wavelength or for measurement of refractive indices of transparent prism materials.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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That means the same-sized optical spectrometer, previously limited by its optical construction to a signal-to-noise ratio (SNR) of 300:1, can now be expected to stretch a linear detector to reach a SNR of well over 3000:1.
These new devices can be thought of as a cross between a microscope and an optical spectrometer, a tool that measures the wavelengths associated with different colors of light, Ben-Amotz says.
Raman spectroscopy uses a "pump" laser to stimulate the target and an optical spectrometer to analyze the emitted optical signal.
* a switchable micromirror array for an optical spectrometer
By combining an optical spectrometer with a beam profile reflectometer, researchers can measure complex devices nondestructively.
Researchers at Oak Ridge (Tenn.) National Lab (ORNL) took a different approach and designed an optical spectrometer that can be specifically tuned, in the design stage, for specific, small-scale sensing applications.

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