Method and apparatus for compensating for wave front distortion

Details Method and apparatus for compensating for wave front distortion Method and apparatus for compensating for wave front distortion

1986-10-02

1988-03-08

Davie, James W.

Coherent light generators

Particular operating compensation means

372 72, 372 99, 372 66, H01S 300

Patent

active

047303247

ABSTRACT:
An optically pumped slab laser includes a solid-state lasing medium having a longitudinally extending lasing axis. A lamp is disposed proximate the lasing medium for emitting optical pumping radiation, and a reflector surrounds the lamp for directing the radiation at selected portions of the lasing medium. A fluid coolant is flowed across a major surface of the lasing medium to remove heat therefrom. The lasing medium exhibits a typical negative focal power lens effect distortion in portions proximate its lateral edges. The reflector is shaped to introduce a positive lens effect distortion, equal in magnitude to the negative lens effect distortion, to a central portion of the lasing medium between the lateral edge portions. External reflectors are positioned so as to direct a subsequently generated laser beam through alternate regions exhibiting the positive and negative focal power lens effect distortions, so that the beam subsequently exits the slab laser with no net distortion.

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patent: 3798571 (1974-03-01), Segre
patent: 4021754 (1977-05-01), Colao
patent: 4199735 (1980-04-01), Chadwick et al.

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