Cleaved-coupled-cavity lasers with large cavity length ratios for enhanced stability
- 1 May 1984
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 44 (9) , 821-823
- https://doi.org/10.1063/1.94952
Abstract
The fabrication and operation of the first cleaved‐coupled‐cavity (C3) semiconductor lasers with large cavity length ratios are described. The internal cleaved facet is precisely positioned by photochemically etching a groove through most of the wafer. Single longitudinal mode operation is obtained over a temperature range of 21 °C and over a current range of threshold to greater than four times threshold. Sidemode suppression of 100:1 was measured when the laser was modulated at 350 MHz with an extinction ratio greater than 10:1. These results are experimentally and theoretically compared to approximately equal length C3 lasers.Keywords
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