Wide tolerance, modulated blue laser source

Details Wide tolerance, modulated blue laser source Wide tolerance, modulated blue laser source

1987-08-31

1988-12-13

Scott, Jr., Leon

Coherent light generators

Particular beam control device

Nonlinear device

372 26, 372 21, 372 69, 372 75, H01S 310

Patent

active

047916311

ABSTRACT:
A process and apparatus are disclosed for producing a beam of coherent radiation at essentially 459 nm by mixing, in a nonlinear crystal consisting essentially of KTP, two laser beams, one at essentially 1064 nm and the other at essentially 808 nm. The 1064 nm radiation is derived from a Nd:YAG laser that consists of an input mirror, an output mirror and a Nd:YAG crystal, and contains also the KTP crystal. The Nd:YAG laser is pumped by an essentially 808 nm semiconductor diode laser beam, which passes through the input mirror and through the KTP crystal into the Nd:YAG laser crystal where it is absorbed. The 1064 nm radiation oscillating inside the Nd:YAG laser resonator is mixed either with the said 808 nm pump beam or with 808 nm radiation provided by a second semiconductor diode laser whose light is coupled with the 1064 nm beam using a beamsplitter. The essentially 459 nm beam passes through the output mirror to a utilization device.

REFERENCES:
patent: 3316500 (1967-04-01), Newman
patent: 3735280 (1973-05-01), Johnston, Jr.
patent: 3947688 (1976-03-01), Massey
patent: 4386428 (1983-05-01), Baer
patent: 4408329 (1983-10-01), Ferguson
Jones et al., "Millivolt-Level 213 nm Source Based on a Depet. Q Switched CW-Pumped Nd:YAG Laser", IEEE JQE 15(4), Apr. '79.

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