Accession Number:

ADD012125

Title:

Semiconductor Laser End-Facet Coatings for Use in Solid or Liquid Environments.

Descriptive Note:

Patent,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

Report Date:

1985-04-09

Pagination or Media Count:

4.0

Abstract:

An improvement for a semiconductor laser allows the facet reflectivity to be modified to compensate for the presence of a liquid or transparent solid medium having an index of refraction n sub m. A first dielectric coatings is disposed on an end-facet of the semiconductor laser and has an index of refraction n sub 1. A second dielectric coating is disposed on the first dielectric coating and has an index of refraction n sub 2. The materials of the dielectric coatings are selected such that the fraction n sub 1n sub 2 square root of n sub m. Thus the problems associated with reduction of laser facet reflectivity due to being in contact with a surrounding medium which optically is very different from air is overcome.

Subject Categories:

  • Lasers and Masers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE