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Injection seeding of a Q-switched alexandrite laser: Study of frequency stabilizationAlGaAs diode lasers were used to injection seed a pulsed Q-switched alexandrite laser which produces a narrowband of radiation. Injection seeding is a method for achieving linewidths of less than 500 mega-Hz in the output of the broadband, tunable solid state laser. When the laser was set at a current of 59.8 milli-A and a temperature of 14.04 C, the wavelength was 767.6 nano-m. The Q-switched alexandrite laser was injection seeded and frequency stabilization was studied. The linewidth requirement was met, but the stability requirement was not due to drifting in the feedback voltage. Improvements on injection seeding should focus on increasing the feedback voltage to the laser diode, filtering the laser diode by using temperature controlled narrowband filters, and the use of diamond (SiC) grating placed inside the alexandrite laser's resonator cavity.
Document ID
19920014718
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Brown, Lamarr A.
(Howard Univ. Washington, DC, United States)
Date Acquired
September 6, 2013
Publication Date
March 24, 1992
Publication Information
Publication: NASA. Goddard Space Flight Center, Summer Graduate Research Program for Interns in Science and Engineering
Subject Category
Lasers And Masers
Accession Number
92N23961
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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