Envelope gain saturation in distributed-feedback lasers
Gain saturation is treated by formulating a model that accounts for the dependence of gain on irradiance level in distributed-feedback lasers. Solutions of the coupled-mode equations of the model are obtained numerically and are presented for both overcoupled and undercoupled laser structures (KL in...
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| Published in | Applied optics (2004) Vol. 14; no. 4; p. 950 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
United States
01.04.1975
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| Online Access | Get more information |
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| Summary: | Gain saturation is treated by formulating a model that accounts for the dependence of gain on irradiance level in distributed-feedback lasers. Solutions of the coupled-mode equations of the model are obtained numerically and are presented for both overcoupled and undercoupled laser structures (KL in the 10(-13)-10 range). Parasitic losses that are distributed uniformly within the structure are found to influence the output power characteristics of distributed-feedback lasers. Also the optimum coupling strength that results in the most efficient conversion of pump power to useful laser output is determined. The optimum coupling strength for any distributed-feedback laser is dependent on the magnitude of the parasitic losses and on the required output-power level. |
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| ISSN: | 1559-128X |
| DOI: | 10.1364/AO.14.000950 |