Multipass laser amplification with near-field far-field optical

Details Multipass laser amplification with near-field far-field optical Multipass laser amplification with near-field far-field optical

1978-01-11

1979-05-29

Moskowitz, Nelson

Amplifiers

Parametric amplifiers

Semiconductor type

331 945C, H01S 308

Patent

active

041568524

ABSTRACT:
This invention discloses two classes of optical configurations for high power laser amplification, one allowing near-field and the other allowing far-field optical separation, for the multiple passage of laser pulses through one or more amplifiers over an open optical path. These configurations may reimage the amplifier or any other part of the cavity on itself so as to suppress laser beam intensity ripples that arise from diffraction and/or non-linear effects. The optical cavities combine the features of multiple passes, spatial filtering and optical reimaging and allow sufficient time for laser gain recovery.

REFERENCES:
patent: 3247467 (1966-04-01), Geusic et al.
patent: 3258717 (1966-06-01), Katzman
patent: 3585523 (1971-06-01), Glenn et al.
patent: 3942127 (1976-03-01), Fluhr et al.
patent: 4001705 (1977-01-01), Sinclair et al.
patent: 4093924 (1978-06-01), Farcy
Hunt et al., "The Use of Multiple Spatial Felters as a Relay Line in Laser Fusion Systems", 9/9/76, pp. 1-7, Preprint 78653, Lawrence Livermore Laboratory.

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