EP0206220A2
Expired / Lapsed
EP
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Higher harmonic generator
Assignee: Sharp Corp
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Filing: 1986-06-17
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Granted: —
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Expires: 2006-06-17
Abstract
Abstract A purpose of the present invention is to provide a semi-conductor laser device which has a high conversion efficiency for generating a higher harmonic wave. <??>The higher harmonic wave generator comprises a first optical waveguide made of nonlinear optical material, having a structure which can guide the incident fundamental wave; and a second optical waveguide made of nonlinear optical material, connected to said first optical wave guide optically, having a structure which can guide a higher harmonic wave of the fundamental wave; and the effective refractive index of said first optical waveguide and that of said second optical waveguide are equalized to each other.
Inventors
- 👤 Seiki Yano
- 👤 Mitsuhiro Matsumoto
- 👤 Toshiki Hijikata
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 23:28
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/35; G02F1/37; G02F1/377
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
80 words
A higher harmonic wave generator, comprising: a first optical waveguide made of a nonlinear optical material, having a structure which can guide an incident fundamental wave; and a second optical waveguide made of nonlinear optical material, connected to said first optical wave guide optically, having a structure which can guide a higher harmonic wave of the fundamental wave; wherein the effective refractive index of said first optical waveguide and that of said second optical waveguide are equalized to each other.
Claim 2
Dependent Claim
80 words
A higher harmonic wave generator, comprising: a first optical waveguide made of a nonlinear optical material, having a structure which can guide an incident fundamental wave; and a second optical waveguide made of nonlinear optical material, connected to said first optical wave guide optically, having a structure which can guide a higher harmonic wave of the fundamental wave; wherein the effective refractive index of said first optical waveguide and that of said second optical waveguide are equalized to each other.
Claim 3
Dependent Claim
49 words
A higher harmonic wave generator according to Claim 1, wherein said first and second optical wave guides are made of the same nonlinear optical waveguides, and the widths of both optical waveguides are controlled so that the effective refractive indexes of both optical waveguides become equal to each other.
Claim 4
Dependent Claim
42 words
A higher harmonic wave generator according to Claim 1, wherein the direction of the incidence of the fundamental wave into the first optical waveguides is the reverse of that of the emission of the higher harmonic wave from the second optical waveguide.
Claim 5
Dependent Claim
42 words
A higher harmonic wave generator according to Claim 1, wherein the direction of the incidence of the fundamental wave into the first optical waveguides is the same as that of the emission of the higher harmonic wave from the second optical waveguide.
Claim 6
Dependent Claim
21 words
A higher harmonic wave generator according to Claim 1, wherein the first and second light waveguides make contact with each other.
Claim 7
Dependent Claim
132 words
A higher harmonic wave generator, comprising: a laser emission device which emitts laser light; a lens means which concentrates the laser light emitted from said laser emission device; and a higher harmonic wave generation device which comprises a first optical waveguide of a nonlinear optical material, having a structure which can guide the incident fundamental wave and a second optical waveguide made of a nonlinear optical material, connected to said first optical waveguide, having a structure which can guide a higher harmonic wave of the fundamental wave; wherein the effective refractive index of said first optical waveguide is equalized to that of said second optical waveguide, said first optical waveguide being so arranged that the laser light concentrated by said lens means is projected on one end of said first optical waveguide.
Claim 8
Dependent Claim
132 words
A higher harmonic wave generator, comprising: a laser emission device which emitts laser light; a lens means which concentrates the laser light emitted from said laser emission device; and a higher harmonic wave generation device which comprises a first optical waveguide of a nonlinear optical material, having a structure which can guide the incident fundamental wave and a second optical waveguide made of a nonlinear optical material, connected to said first optical waveguide, having a structure which can guide a higher harmonic wave of the fundamental wave; wherein the effective refractive index of said first optical waveguide is equalized to that of said second optical waveguide, said first optical waveguide being so arranged that the laser light concentrated by said lens means is projected on one end of said first optical waveguide.
References Cited (Backward Citations)
No citation records indexed.
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