SINGLE LONGITUDINAL MODE LASER DIODE SYSTEM
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United States of America Patent
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Feb 1, 2018
app pub date -
Sep 28, 2017
filing date -
Nov 10, 2014
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Abstract
A semiconductor laser diode system may include a single longitudinal mode laser diode and a feedback system that monitors and controls the emission characteristics of the laser diode. The laser diode may include a gain medium and an optical feedback device. The feedback system may include a wavelength discriminator, an optical detector, a microprocessor, and a laser controller. Such a semiconductor laser diode system may be used to produce laser light having coherence length, wavelength precision, and wavelength stability that is equivalent to that of a gas laser. Accordingly, such a semiconductor laser diode system may be used in place of a traditional gas laser.
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