The Refractive Index of Pb(1-x)Sn(x)Te, Pb(1-y)Sn(y)Se, and PbS(1-x)Se(x) and Theoretical Calculations for Pb(1-x)Sn(x)Te and Pb(1-y)Sn(y)Se 10.6 Micron Heterostructure Injection Lasers.
NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF
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The refractive indices, n, in the fundamental absorption edge regions of three alloy semiconductors, Pb1-xSnxTe, Pb1-ySnySe, and PbS1-xSex, are investigated. Preliminary results of the refractive indices of PbS1-xSex thin films are presented. For Pb1-xSnxTe and Pb1-ySnySe, empirical relationships for n have been determined as a function of wavelength, composition, and temperature, using refractive index data previously measured in this laboratory. In the second part of this work, the laser performances of double heterojunction Pb1-xSnxTe and Pb1-ySnySe injection lasers emitting 10.6 micrometer radiation and operated at 85K, were theoretically calculated. Threshold current and lasing output power as functions of compositions and laser geometry, were calculated as a guide for optimum design. Threshold current dansities of less than 200Asq cm and output power of more than 2mW with 1A bias current were calculated for diodes of 1sq mm cross section, operated at 85K. Author
- Lasers and Masers
- Electrooptical and Optoelectronic Devices
- Solid State Physics