Frequency-swept laser light source at 1050 nm with higher bandwidth due to multiple semiconductor optical amplifiers in series

Sebastian Marschall; Lars Thrane; Peter E. Andersen; Christian Pedersen; Kevin Hsu

doi:10.1117/12.809068

20 February 2009 Frequency-swept laser light source at 1050 nm with higher bandwidth due to multiple semiconductor optical amplifiers in series

Sebastian Marschall, Lars Thrane, Peter E. Andersen, Christian Pedersen, Kevin Hsu

Author Affiliations +

Proceedings Volume 7168, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XIII; 716824 (2009) https://doi.org/10.1117/12.809068
Event: SPIE BiOS, 2009, San Jose, California, United States

Abstract

We report on the development of an all-fiber frequency-swept laser light source in the 1050 nm range based on semiconductor optical amplifiers (SOA) with improved bandwidth due to multiple gain media. It is demonstrated that even two SOAs with nearly equal gain spectra can improve the performance of the light source when installed in series. This Serial SOA configuration (SSOA) is compared with the common MasterOscillator/Power Amplifier architecture (MOPA) where a single SOA is used as laser gain medium in the resonator and a second one outside as booster. We show that for high sweep rates (20 kHz) the SSOA configuration can maintain a significantly higher bandwidth (~50% higher) compared to the MOPA architecture. Correspondingly narrower point spread functions can be generated in a Michelson interferometer.

Citation Download Citation

Sebastian Marschall, Lars Thrane, Peter E. Andersen, Christian Pedersen, and Kevin Hsu "Frequency-swept laser light source at 1050 nm with higher bandwidth due to multiple semiconductor optical amplifiers in series", Proc. SPIE 7168, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XIII, 716824 (20 February 2009); https://doi.org/10.1117/12.809068

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