Curved-grating surface-emitting DFB lasers and arrays

Steven H. Macomber; Jeffrey S. Mott; Bradley D. Schwartz; Richard S. Setzko; Jeffrey J. Powers; Patricia A. Lee; Deborah P. Kwo; Robert M. Dixon; James E. Logue

doi:10.1117/12.273813

2 May 1997 Curved-grating surface-emitting DFB lasers and arrays

Steven H. Macomber, Jeffrey S. Mott, Bradley D. Schwartz, Richard S. Setzko, Jeffrey J. Powers, Patricia A. Lee, Deborah P. Kwo, Robert M. Dixon, James E. Logue

Author Affiliations +

Proceedings Volume 3001, In-Plane Semiconductor Lasers: from Ultraviolet to Midinfrared; (1997) https://doi.org/10.1117/12.273813
Event: Photonics West '97, 1997, San Jose, CA, United States

Abstract

A new method of producing nearly diffraction limited beam quality from high-power semiconductor lasers is presented. It is shown, both theoretically and experimentally, that well-designed grating curvature in surface-emitting distributed feedback lasers can alleviate the problems of multi-mode operation and filamentation in wide stripe devices. Surface-emitting devices of this type are capable of very high power without the optical damage limitations of edge-emitting lasers. A method for combining arrays of these lasers with series electrical wiring and precision optical alignment has been developed. A 64 element array was demonstrated that produced approximately 160 W of cm power and could be focused into a small spot.

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Steven H. Macomber, Jeffrey S. Mott, Bradley D. Schwartz, Richard S. Setzko, Jeffrey J. Powers, Patricia A. Lee, Deborah P. Kwo, Robert M. Dixon, and James E. Logue "Curved-grating surface-emitting DFB lasers and arrays", Proc. SPIE 3001, In-Plane Semiconductor Lasers: from Ultraviolet to Midinfrared, (2 May 1997); https://doi.org/10.1117/12.273813

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