Second harmonic wave generating device

Details Second harmonic wave generating device Second harmonic wave generating device

1989-12-19

1990-09-04

Sikes, William L.

350 9634, G02B 610

Patent

active

049539310

ABSTRACT:
A second harmonic wave generating device comprising a LiNbO.sub.3 thin film waveguide layer formed on a LiTaO.sub.3 substrate, in which the LiTaO.sub.3 substrate has an ordinary refractive index (n.sub.oS1) of 2.10 to 2.20 at the fundamental wavelength (.lambda..mu.m) and an extraordinary refractive index (n.sub.eS2) of 2.22 to 2.28 at the second harmonic wavelength (.lambda..mu.m/2), and the ordinary refractive index (n.sub.oF1) at the fundamental wavelength (.lambda..mu.m) of the LinBO.sub.3 thin film waveguide layer, the extraordinary refractive index (n.sub.eS2) at the second harmonic wavelength (.lambda..mu.m/2) of the LiTaO.sub.3 substrate, and the extraordinary refractive index (n.sub.eF2) at the second harmonic wavelength (.lambda..mu.m/2) of the LiNbO.sub.3 thin film waveguide layer have the relation ##EQU1##

REFERENCES:
patent: 4775206 (1988-10-01), Erman et al.
patent: 4778234 (1988-10-01), Papuchon et al.

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