JPS6467989A - Narrow-band laser device - Google Patents

Narrow-band laser device

Info

Publication number
JPS6467989A
JPS6467989A JP22407187A JP22407187A JPS6467989A JP S6467989 A JPS6467989 A JP S6467989A JP 22407187 A JP22407187 A JP 22407187A JP 22407187 A JP22407187 A JP 22407187A JP S6467989 A JPS6467989 A JP S6467989A
Authority
JP
Japan
Prior art keywords
mirror
output
etalons
etalon
narrow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP22407187A
Other languages
Japanese (ja)
Inventor
Yukio Kawakubo
Hiroyuki Sugawara
Hiroharu Sasaki
Yoshimasa Kubota
Tsuneyoshi Ohashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP22407187A priority Critical patent/JPS6467989A/en
Publication of JPS6467989A publication Critical patent/JPS6467989A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/08—Construction or shape of optical resonators or components thereof
    • H01S3/081—Construction or shape of optical resonators or components thereof comprising three or more reflectors
    • H01S3/082—Construction or shape of optical resonators or components thereof comprising three or more reflectors defining a plurality of resonators, e.g. for mode selection or suppression

Abstract

PURPOSE:To narrow the band of a beam of a large diameter in which a speckle is not output by providing a pair of etalons inclined reversely to a laser optical axis in a resonator. CONSTITUTION:A laser device is composed of a laser medium 1, an output mirror 2 having partial reflecting mirror function, a total-reflecting mirror 3, and a pair of etalons 5, 6. A resonator is formed of the mirror 3 and the mirror 2. The etalons 5, 6 are so inclined reversely to one another within 15 deg. at a position perpendicular to an optical axis as a reference. A parallel beam 7 incident to the etalon 5 is refracted in a solid section 5a, transmitted through a reflecting film 5a, and reflected on an opposite reflecting film 5d. It is multiply reflected between the films 5b and 5d, and the divided lights are fed through a solid section 5e to output a light 9 of parallel arrays to an exterior. Similar operation in the etalon 5 is also repeated in the etalon 6 thereby to output only a parallel beam narrowed in its band in a large diameter to an exterior.
JP22407187A 1987-09-09 1987-09-09 Narrow-band laser device Pending JPS6467989A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22407187A JPS6467989A (en) 1987-09-09 1987-09-09 Narrow-band laser device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22407187A JPS6467989A (en) 1987-09-09 1987-09-09 Narrow-band laser device

Publications (1)

Publication Number Publication Date
JPS6467989A true JPS6467989A (en) 1989-03-14

Family

ID=16808106

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22407187A Pending JPS6467989A (en) 1987-09-09 1987-09-09 Narrow-band laser device

Country Status (1)

Country Link
JP (1) JPS6467989A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02105565A (en) * 1988-10-14 1990-04-18 Fuji Electric Co Ltd Manufacture of semiconductor device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02105565A (en) * 1988-10-14 1990-04-18 Fuji Electric Co Ltd Manufacture of semiconductor device

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