14 April 1999 Semiconductor laser linewidth measurements for space interferometry applications
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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.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
David J. Dougherty, Roman C. Gutierrez, Serge Dubovitsky, Siamak Forouhar, "Semiconductor laser linewidth measurements for space interferometry applications", Proc. SPIE 3626, Testing, Packaging, Reliability, and Applications of Semiconductor Lasers IV, (14 April 1999); doi: 10.1117/12.345421; https://doi.org/10.1117/12.345421


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