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Title: Readout for a ring laser

Abstract

A readout apparatus is described for a ring laser wherein a laser gain medium in combination with wave reflecting means which are positioned to form an optical closed-loop path provides at least two counter-propagating waves traveling about the closed-loop path. The readout apparatus consists of: one of the wave reflecting means being partially transmissive and capable of transmitting a first wave which is a portion of one of the counter-propagating waves impinging thereon, and a second wave which is a portion of the other one of the counter-propagating waves also impinging thereon; a first mechanically and thermally stable block for providing a medium for transmission of optical waves, the first block having, a first surface in the path of the first wave for producing a first in-block wave within the block, the first in-block wave being at least a portion of the first wave impinging on the first surface; a second surface optically coated to provide a first beam splitter, the first beam splitter being in the path of the first in-block wave such that the angle of incidence thereon is less than 45 degrees, the first beam splitter splitting the first in-block wave into a third wave and amore » fourth wave, the third and fourth waves being a transmitted portion and a reflected portion, respectively, of the first in-block wave, a third surface optically coated for providing a second beam splitter having first and second sides, the first beam splitter being positioned in the path of the first in-block wave so as to direct the fourth wave to impinge on the first side of the second beam splitter, and a fourth surface for transmitting waves therethrough.« less

Inventors:
Publication Date:
OSTI Identifier:
5720389
Patent Number(s):
US 4582429
Assignee:
Honeywell, Minneapolis, MN
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 6 Apr 1983
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; RING LASERS; READOUT SYSTEMS; BEAM SPLITTING; COATINGS; GAIN; INCIDENCE ANGLE; OPTICAL SYSTEMS; POSITIONING; REFLECTION; SPACE DEPENDENCE; STABILITY; THERMAL EQUILIBRIUM; WAVE PROPAGATION; WAVEGUIDES; AMPLIFICATION; EQUILIBRIUM; LASERS; 420300* - Engineering- Lasers- (-1989)

Citation Formats

Callaghan, S P. Readout for a ring laser. United States: N. p., 1986. Web.
Callaghan, S P. Readout for a ring laser. United States.
Callaghan, S P. Tue . "Readout for a ring laser". United States.
@article{osti_5720389,
title = {Readout for a ring laser},
author = {Callaghan, S P},
abstractNote = {A readout apparatus is described for a ring laser wherein a laser gain medium in combination with wave reflecting means which are positioned to form an optical closed-loop path provides at least two counter-propagating waves traveling about the closed-loop path. The readout apparatus consists of: one of the wave reflecting means being partially transmissive and capable of transmitting a first wave which is a portion of one of the counter-propagating waves impinging thereon, and a second wave which is a portion of the other one of the counter-propagating waves also impinging thereon; a first mechanically and thermally stable block for providing a medium for transmission of optical waves, the first block having, a first surface in the path of the first wave for producing a first in-block wave within the block, the first in-block wave being at least a portion of the first wave impinging on the first surface; a second surface optically coated to provide a first beam splitter, the first beam splitter being in the path of the first in-block wave such that the angle of incidence thereon is less than 45 degrees, the first beam splitter splitting the first in-block wave into a third wave and a fourth wave, the third and fourth waves being a transmitted portion and a reflected portion, respectively, of the first in-block wave, a third surface optically coated for providing a second beam splitter having first and second sides, the first beam splitter being positioned in the path of the first in-block wave so as to direct the fourth wave to impinge on the first side of the second beam splitter, and a fourth surface for transmitting waves therethrough.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1986},
month = {4}
}