Laser shock peening method and reflective laser beam homogenizer

Details Laser shock peening method and reflective laser beam homogenizer Laser shock peening method and reflective laser beam homogenizer

1997-11-21

2000-02-01

Bovernick, Rodney

Coherent light generators

Particular resonant cavity

Specified output coupling device

H01S 308

Patent

active

060211547

ABSTRACT:
A method for laser shock peening a target surface generates laser pulses from a cavity dumping oscillator having an optically-pumped laser and directs the pulses against the target. A first technique uses pulses having rectangular cross section. A second technique passes each generated pulse two or more times through the same optical amplifier before directing the pulse against the target. A third technique drives the laser with a time pulse of electric current having a rectangular shape. A reflective laser beam homogenizer uses two abutting mirrors to split a laser beam into two equal halves and then uses an odd number of additional mirrors to reflect each half first behind and then to the opposite one of the two mirrors to be reflected back as a beam having interchanged halves.

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