Lateral mode controlled wide-stripe-lasers by modal reflector

K. Shigihara; Y. Nagai; Yoshihiro Kokubo; Hirosi Matsubara; Kenji Ikeda; Wataru Susaki

doi:10.1117/12.18254

1 May 1990 Lateral mode controlled wide-stripe-lasers by modal reflector

K. Shigihara, Y. Nagai, Yoshihiro Kokubo, Hirosi Matsubara, Kenji Ikeda, Wataru Susaki

Proceedings Volume 1219, Laser Diode Technology and Applications II; (1990) https://doi.org/10.1117/12.18254
Event: OE/LASE '90, 1990, Los Angeles, CA, United States

Abstract

A modal reflector having a high reflective (about 40 percent) region with 24 microns, 48 microns or 96 microns width on the output facet, and applied to gain-guided wide (150 microns) stripe lasers, is described. The partially high reflective region composing the modal reflector consists of an Al2O3/a-Si multilayer whose thickness is determined so as to match in phase between a part of the output from the highly reflective region and remaining outupt from the low reflective ( about 1 percent) region in order to reduce side peaks (fringes) in far-field patterns. Single-lobed far-field patterns for lateral direction as narrow as from 0.88 deg to about 3.5 deg are observed at up to 0.4 W under CW condition.

Citation Download Citation

K. Shigihara, Y. Nagai, Yoshihiro Kokubo, Hirosi Matsubara, Kenji Ikeda, and Wataru Susaki "Lateral mode controlled wide-stripe-lasers by modal reflector", Proc. SPIE 1219, Laser Diode Technology and Applications II, (1 May 1990); https://doi.org/10.1117/12.18254

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