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Title: Unidirectional ring lasers

Unidirectional ring lasers formed by integrating nonreciprocal optical elements into the resonant ring cavity is disclosed. These optical elements either attenuate light traveling in a nonpreferred direction or amplify light traveling in a preferred direction. In one preferred embodiment the resonant cavity takes the form of a circle with an S-shaped crossover waveguide connected to two points on the interior of the cavity such that light traveling in a nonpreferred direction is diverted from the cavity into the crossover waveguide and reinjected out of the other end of the crossover waveguide into the cavity as light traveling in the preferred direction. 21 figs.
Inventors:
;
Issue Date:
OSTI Identifier:
6982234
Assignee:
Dept. of Energy, Washington, DC (United States) SNL; EDB-94-154004
Patent Number(s):
US 5349601; A
Application Number:
PPN: US 8-123835
Contract Number:
AC04-76DP00789
Resource Relation:
Patent File Date: 20 Sep 1993
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; RING LASERS; DESIGN; LASER CAVITIES; LASER RADIATION; OPTICAL SYSTEMS; ELECTROMAGNETIC RADIATION; LASERS; RADIATIONS; 426002* - Engineering- Lasers & Masers- (1990-)