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The semiconductor laser linewidth due to the presence of side modes

Journal Article · · IEEE J. Quant. Electron.; (United States)
DOI:https://doi.org/10.1109/3.14361· OSTI ID:6412601
;  [1]
  1. Technische Univ. Berlin, Institut fur Hochfrequenztechnik, D-1000 Berlin 10 (DE)
The laser linewidth is evaluated by solving the rate equations for a nearly-single mode laser with two modes. The resulting line-width contribution due to the presence of side modes is introduced by the nonlinear gain in the laser diode. For weak side modes, the linewidth contribution is proportional to the third power of the side mode intensity. A linewidth contribution of about 20 MHz for a side mode power of 100 ..mu..W has been found experimentally for a 1.3 ..mu..m buried heterostructure laser.
OSTI ID:
6412601
Journal Information:
IEEE J. Quant. Electron.; (United States), Journal Name: IEEE J. Quant. Electron.; (United States) Vol. 24:12; ISSN IEJQA
Country of Publication:
United States
Language:
English

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