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Proceedings Paper

Semiconductor laser linewidth measurements for space interferometry applications
Author(s): David J. Dougherty; Roman C. Gutierrez; Serge Dubovitsky; Siamak Forouhar
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Paper Abstract

Narrow linewidth (< 100 KHz) semiconductor lasers are expected to be a key technology in NASA's stellar interferometry missions to search for planets around nearby stars. Long coherence length lasers are needed for precise (20 pm to 5 nm) measurements of the optical path difference. This work discusses results using the self-heterodyne delay technique to measure 1.3 um InP based DFB lasers. We will also address practical issues concerning detection and elimination of back reflections, choice of fiber length and resolution, and measurement of laser l/f and current supply noise.

Paper Details

Date Published: 14 April 1999
PDF: 8 pages
Proc. SPIE 3626, Testing, Packaging, Reliability, and Applications of Semiconductor Lasers IV, (14 April 1999); doi: 10.1117/12.345421
Show Author Affiliations
David J. Dougherty, Jet Propulsion Lab. (United States)
Roman C. Gutierrez, Jet Propulsion Lab. (United States)
Serge Dubovitsky, Jet Propulsion Lab. (United States)
Siamak Forouhar, Jet Propulsion Lab. (United States)


Published in SPIE Proceedings Vol. 3626:
Testing, Packaging, Reliability, and Applications of Semiconductor Lasers IV
Mahmoud Fallahi; S. C. Wang; Mahmoud Fallahi; Kurt J. Linden; S. C. Wang, Editor(s)

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