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28 February 2012 Oscillation frequency stabilization and narrowing of a laser diode by using an external cavity
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Abstract
External cavity diode laser (ECDL) systems are presently experiencing a surge in popularity as laser light-sources, in advanced optical communications- and measurement-applications. Because such systems require that their external reflectors be precisely controlled, to eliminate low frequency fluctuations in optical output, we conducted experiments with a two-cavity version of the ECDL system for a vertical cavity surface emitting laser (VCSEL). This technique brings the added advantages of a narrower linewidth than would be achievable via a single optical feedback. VCSELs are characterized by wider oscillation linewidths than edge emitting types, so the larger effect of double optical feedback system is expected.
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Minoru Iwahori, Kohei Doi, Hideaki Arai, Takashi Sato, and Masashi Ohkawa "Oscillation frequency stabilization and narrowing of a laser diode by using an external cavity", Proc. SPIE 8255, Physics and Simulation of Optoelectronic Devices XX, 825529 (28 February 2012); https://doi.org/10.1117/12.909622
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