Generation of single transverse modes in a commercial multimode VCSEL by the beam-profile adapted optical feedback

Yu-Heng Wu; Chuan-Pi Hsu; Da-Long Cheng; Wang-Chuang Kuo; Tsu-Chiang Yen

doi:10.1117/12.853964

27 April 2010 Generation of single transverse modes in a commercial multimode VCSEL by the beam-profile adapted optical feedback

Yu-Heng Wu, Chuan-Pi Hsu, Da-Long Cheng, Wang-Chuang Kuo, Tsu-Chiang Yen

Author Affiliations +

Proceedings Volume 7720, Semiconductor Lasers and Laser Dynamics IV; 77201S (2010) https://doi.org/10.1117/12.853964
Event: SPIE Photonics Europe, 2010, Brussels, Belgium

Abstract

This research investigated the feasibility of applying beam-profile adapted optical feedback to generate single high-order transverse modes in a commercial multi-transverse mode vertical-cavity surface-emitting laser (VCSEL). The beam-profile adaption was achieved by launching the multi-transverse-mode beam profile of the solitary VCSEL into a single-mode fiber. At the fiber's exit, a quasi-Gaussian beam profile was easily obtained. Afterward, the beam was passed through a spatial light modulator (SLM), and was then fed back into the laser's cavity. The SLM was designed to have the intensity pattern of a designated transverse mode. Accordingly, the beam profile of the feedback beam was adapted to be the pattern of a single transverse mode. Conducting by the feedback beam, the VCSEL would lase the designated single transverse mode with a side-mode suppression ratio about 10 dB. More experimental details will be presented. These results will help to expand the application of VCSELs.

Citation Download Citation

Yu-Heng Wu, Chuan-Pi Hsu, Da-Long Cheng, Wang-Chuang Kuo, and Tsu-Chiang Yen "Generation of single transverse modes in a commercial multimode VCSEL by the beam-profile adapted optical feedback", Proc. SPIE 7720, Semiconductor Lasers and Laser Dynamics IV, 77201S (27 April 2010); https://doi.org/10.1117/12.853964

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