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.
Abstract
The refractive indices, n, in the fundamental absorption edge regions of three alloy semiconductors, Pb(1-x)Sn(x)Te, Pb(1-y)Sn(y)Se, and PbS(1-x)Se(x), are investigated. Preliminary results of the refractive indices of PbS(1-x)Se(x) thin films are presented. For Pb(1-x)Sn(x)Te and Pb(1-y)Sn(y)Se, 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 Pb(1-x)Sn(x)Te and Pb(1-y)Sn(y)Se 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 200A/sq 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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1973
- Accession Number
- AD0767677
Entities
People
- Walter George Opyd
Organizations
- Naval Postgraduate School