Self-frequency-doubler laser element

Details Self-frequency-doubler laser element Self-frequency-doubler laser element

1993-12-03

1995-02-14

Scott, Jr., Leon

Coherent light generators

Particular beam control device

Nonlinear device

372 96, 372 41, 372 21, 372 64, 372 92, 372 7, H01S 310

Patent

active

053902017

ABSTRACT:
A self-frequency-doubler laser element having a three-dimensional optical waveguide includes a first transparent insulating substrate having both a DFB grating and a grating reflector formed on one side of the DFB grating, a Nd.sup.3+ -ion-doped thin glass film laid over the first transparent insulating substrate, a thin nonlinear optical film laid over the thin glass film, a second transparent insulating substrate laid over the thin nonlinear optical film, and a thin reflecting film laid over the second transparent insulating substrate, wherein the following conditions are satisfied: nf-ng=0.01 to 0.05, and nf and ng are greater than ns and nc, where ns, ng, nf, and nc are the refractive indices of the first transparent insulating substrate, the thin glass film, the thin nonlinear optical film, and the second transparent insulating substrate, respectively. The optical waveguide generates a laser fundamental harmonic, converts it to a second higher harmonic having a wavelength one-half of the laser fundamental harmonic, and emits the second higher harmonic.

REFERENCES:
"The Fundamentals of Optoelectronics", Yarlv, A., translated by Kunio Tada and Takeshi Kamiya, pp. 200-205.
"Phase Matched Second Harmonic Generations in Poled Dye-Polymer Waveguides", Sugihara et al., Physical Concepts of Materials for Novel Optoelectronic Device Applications I, SPIE, vol. 1361, pp. 599-605, 1990.
"Optical Electronics", Yariv, A., pp. 6-7, 226-253 and 402-429.
"Organic Nonlinear Materials", Umegaki, M., pp. 50-60.
"A Series of New Materials, New Organic Nonlinear Optical Materials I, Most Advanced Material Development", Nakanishi et al., pp. 6-15.

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