Patent EP0331303A2 successfully refreshed from Google Patents.
EP0331303A2
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Second harmonic generation
Assignee: Sony Corp
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Filing: 1989-02-13
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Granted: —
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Expires: 2009-02-13
Abstract
Abstract A second harmonic generator having a non-linear optical crystal element for generating a second harmonic laser light. In this second harmonic generator, a birefringent element is inserted into a resonant optical path of a fundamental wave laser light, whereby the second harmonic laser light emitted as an output laser light is stabilized.
Inventors
- 👤 Michio Oka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 00:42
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/06; H01S3/0627; H01S3/10; H01S3/106; H01S3/108; H01S3/109; H01S2301/00; H01S2301/02; H01S3/0602; H01S3/0604; H01S3/0615
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
129 words
A second harmonic generator for generating a second harmonic laser light in which a fundamental wave laser light produced in a laser medium is resonated so as to pass a non-linear optical crystal element provided within a resonator, said second harmonic generator comprising: a) a birefringent element inserted into a resonant optical path such that while said fundamental wave laser light is rotated at its polarized plane, it reciprocates said resonator, whereby two perpendicular intrinsic polarized lights are set in the fundamental wave modes and an azimuth angle ϑ and a phase amount Δ of said birefringent element are selected so as to prevent energy from being interchanged between said two intrinsic polarized lights of said second harmonic laser light through the generation of the second harmonic laser light.
Claim 2
Dependent Claim
129 words
A second harmonic generator for generating a second harmonic laser light in which a fundamental wave laser light produced in a laser medium is resonated so as to pass a non-linear optical crystal element provided within a resonator, said second harmonic generator comprising: a) a birefringent element inserted into a resonant optical path such that while said fundamental wave laser light is rotated at its polarized plane, it reciprocates said resonator, whereby two perpendicular intrinsic polarized lights are set in the fundamental wave modes and an azimuth angle ϑ and a phase amount Δ of said birefringent element are selected so as to prevent energy from being interchanged between said two intrinsic polarized lights of said second harmonic laser light through the generation of the second harmonic laser light.
Claim 3
Dependent Claim
30 words
A second harmonic generator according to Claim 1, in which said laser medium, said non-linear optical crystal element and said birefringent element are sequentially and closely laminated as one body.
Claim 4
Dependent Claim
23 words
A second harmonic generator according to Claim 1, in which said azimuth angle ϑ is 45° and said phase amount Δ is 90°.
Claim 5
Dependent Claim
23 words
A second harmonic generator constructed and arranged to operate substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
Claim 6
Dependent Claim
23 words
A second harmonic generator constructed and arranged to operate substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
References Cited (Backward Citations)
No citation records indexed.
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