期刊
IEEE JOURNAL OF QUANTUM ELECTRONICS
卷 46, 期 8, 页码 1221-1231出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JQE.2010.2045344
关键词
Coherent beam combining; high power fiber laser; mode analysis
资金
- Cymer, Inc.
Measurements of the modal properties of Michelson resonators are compared to theory using a common-path generalized Michelson resonator. Conventional Michelson cavities are shown to exhibit significant loss when path length errors are introduced, often resulting in reduced output power. Accurate measurements of these losses as a function of path length error are provided, along with measurements of the field distribution in the resonator. Proper exploitation of spatial and longitudinal super-modes is shown to reduce the path length sensitivity in coherent beam combining systems. In particular, modifying a conventional Michelson resonator to include an additional mirror reduces path length error losses and increases output power. Measurements of the modal performance of these cavities compare well with theoretical expectations.
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