Fiber-type light conversion device

Details Fiber-type light conversion device Fiber-type light conversion device

1990-09-05

1992-05-12

Epps, Georgia

Optical: systems and elements

Optical frequency converter

Dielectric optical waveguide type

385 33, 385122, 359328, G02F 137

Patent

active

051121220

ABSTRACT:
A fiber-type light conversion device comprises: a fiber-type light conversion element having a core made of non-linear optical crystal for changing the wavelength of an incident light to half by the phase matching of Cerenkov radiation; and a collimating optical system for transforming an emergent light beam emitted from the light conversion element into a parallel light beam, wherein the collimating optical system has lenses having a large spherical aberration .DELTA.z. Furthermore, the quantity of spherical aberration .DELTA.z is determined so as to satisfy the following equation of:

REFERENCES:
patent: 4844574 (1989-07-01), Chande
patent: 4892375 (1990-01-01), Chikuma et al.
patent: 4893888 (1990-01-01), Okazaki et al.
patent: 4919511 (1990-04-01), Ohsawa
patent: 4961622 (1990-10-01), Gorman et al.

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