Blue generation at the H-Beta Fraunhofer wavelength using noncri

Details Blue generation at the H-Beta Fraunhofer wavelength using noncri Blue generation at the H-Beta Fraunhofer wavelength using noncri

1991-12-26

1993-03-02

Scott, Jr., Leon

Coherent light generators

Particular beam control device

Nonlinear device

359327, 372 34, 372 20, H01S 310

Patent

active

051915871

ABSTRACT:
An optical blue parametric generation relies upon a nonlinear optical cryl of lithium borate (LiB.sub.3 O.sub.5) properly oriented to generate blue light when appropriately located in a resonant optical cavity and pumped with high intensity light at 355 nm. Beam walk-off and beam pump divergence are greatly reduced due to a specific orientation of non-critical phase-matching so that the 355 nm pump source provides for a sufficient phase-match for output generation near the H Beta Fraunhofer wavelength at 486 nm and also provides for a temperature tuning of the lithium borate crystal to permit exact coincidence to a particular output wavelength so that optical parametric generation from 470 to 487 nm may be assured by the appropriately tuned lithium borate crystal.

REFERENCES:
patent: 4413342 (1983-11-01), Cohen et al.
patent: 4791631 (1988-12-01), Baumert et al.
patent: 4826283 (1989-05-01), Chuangtian et al.

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