Optically Pumped In1−xGax P Platelet Lasers from the Infrared to the Yellow (8900−5800 Å, 77°K)
- 1 March 1972
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 43 (3), 1019-1022
- https://doi.org/10.1063/1.1661211
Abstract
The laser operation (77°K) of optically pumped thin platelets of In1−xGaxP over the composition range x=0–0.59 (8900−5800°A) is demonstrated. The samples are prepared from material grown at constant temperature (900–1000°C) from In solution with source InP and GaP introduced at slightly higher temperature. The dependence of the laser photon energy upon composition agrees well with the Γ−χ curves of Lorenz and Onton and confirms the belief that the direct‐indirect transition is at x∼0.74. In addition, unique spectral data on In1−x Gax P (x=0.27) are presented that show the mode development from spontaneous to high‐level stimulated emission.Keywords
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