High Vacuum Evaporation System.
Abstract
The primary objective of the electron beam evaporator is to apply high quality optical coatings for lasers operating in the midinfrared region (2-5 micron) band, as well as lasers emitting in the range of 0.7 - 1.0 micron wavelength. The electron beam evaporator is used to compare the performance of midinfrared laser diodes with different schemes of optical coating on the laser facets. The use of optical coatings on lasers facets is to show the improvement in high power performance with HR (high reflective) + LR (low reflective) coating, and high temperature performance with HR coatings for the midinfrared lasers as well as lasers emitting in the range of 0.7 - 1.0 micron. It has become mandatory to use high quality optical coatings for further improving the performance of 3.2 um InAsSb/InAs lasers. Three schemes of facet coatings are studied: LR coating on front, HR on back, and asymetric coating of LR/HR. The ebeam system is also used for the application of Sb-based infrared photodetectors.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1996
- Accession Number
- ADA309326
Entities
People
- Manijeh Razeghi
Organizations
- Northwestern University