Novel high‐power and coherent semiconductor laser with a shaped unstable resonator
作者:
Salvador Guel‐Sandoval,
Alan H. Paxton,
Swaminathan T. Srinivasan,
Shang‐Zhu Sun,
Stephen D. Hersee,
Michael S. Allen,
Charles E. Moeller,
David J. Gallant,
Gregory C. Dente,
John G. McInerney,
期刊:
Applied Physics Letters
(AIP Available online 1995)
卷期:
Volume 66,
issue 16
页码: 2048-2050
ISSN:0003-6951
年代: 1995
DOI:10.1063/1.113688
出版商: AIP
数据来源: AIP
摘要:
We describe a novel high power semiconductor laser that employs a shaped unstable resonator waveguide to maintain fundamental spatial mode operation at high power levels. We call this device the SHUR (shaped unstable resonator) laser. By photoetching and regrowth we locate a secondary, nonplanar antiguide, beneath the main part of the waveguide. The lasing mode couples to this secondary guide and experiences lateral antiguiding, which is the basis of the unstable resonator action. Prototype versions of the SHUR laser show a maximum pulsed output power of 770 mW per facet. The focused beam is dominated by a single lobe that contains 47% of the output power. ©1995 American Institute of Physics.
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