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Theory of spectral linewidth of external cavity semiconductor lasers

Journal Article · · IEEE J. Quant. Electron.; (United States)

A new formula of the spectral linewidth of external cavity semiconductor lasers is proposed, with which linewidth narrowing with the optical feedback is discussed. It is shown that in the limit of large external cavity length, the linewidth caused by the phase diffusion due to spontaneously emitted photons becomes dominant and the linewidth decreases proportionally to the inverse of the external cavity length.

Research Organization:
Matsushita Electric Industrial Co., Ltd., Osaka 570
OSTI ID:
5628445
Journal Information:
IEEE J. Quant. Electron.; (United States), Journal Name: IEEE J. Quant. Electron.; (United States) Vol. QE-22:7; ISSN IEJQA
Country of Publication:
United States
Language:
English