Method of making travelling wave semi-conductor laser

Details Method of making travelling wave semi-conductor laser Method of making travelling wave semi-conductor laser

Filed on

1987-12-04

Date issued

1989-07-25

Examiner

Hearn, Brian E.

Patent Class

Fishing, trapping, and vermin destroying

Other Related Categories

148DIG51, 148DIG56, 148DIG95, 148DIG106, 148DIG111, 156644, 156649, 156656, 156662, 357 16, 372 94, 437133, 437228, 437231, 437936, H01L 21306

Type

Patent

Status

active

Patent number

048513687

Description

ABSTRACT:
A triangular ring laser utilizing total internal reflection at two angled facets and a preselected amount of reflection at a third angled facet is disclosed. Partial transmission occurs through the third facet to reduce the threshold current required for achieving stimulated emission. The facets are at three corners of the triangular laser, and are formed by chemically assisted ion beam etching in which SiO.sub.2 is used as a mask, whereby smooth vertical walls are produced to form facets having reflective characteristics equivalent to those formed by cleaving.

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