Single longitudinal mode operation of semiconductor laser arrays with étalon feedback
- 27 July 1987
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 51 (4), 224-225
- https://doi.org/10.1063/1.98455
Abstract
The multiple longitudinal mode output of high-power diode-laser arrays is converted into single mode with 97% efficiency by optical feedback from a thin (<200 μm thick) étalon external to the laser. The coupled cavities formed by addition of the étalon favor a single longitudinal mode. Single-mode operation is retained at 0.1 MHz pulsed rates. Both the near-field and the far-field patterns of the laser array remain nearly unchanged while the array operates in a single longitudinal mode.Keywords
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