Ring resonators with intracavity grazing incidence telescopes

Details Ring resonators with intracavity grazing incidence telescopes Ring resonators with intracavity grazing incidence telescopes

1989-09-28

1990-07-10

Sikes, William L.

Coherent light generators

Particular resonant cavity

Folded cavity

372 37, H01S 3083

Patent

active

049411470

ABSTRACT:
An unstable ring resonator employing grazing incidence telescopic mirrors to expand a high power laser beam after it emerges from the wiggler. The grazing incidence mirror is used to increase the footprint of the laser beam on the mirrors surface to decrease the laser's intensity on the surface of the mirror, and thus increase the power of the laser which can be handled in a ring resonator. The ring resonator consists of a scraper mirror 12, a turning mirror 13, a grazing incident beam reduction telescope 101 comprising mirror components 1 and 2, a wiggler 4, a grazing incident beam expansion telescope 102 comprising mirror components 6 and 7 and a second turning mirror 14. The grazing incident telescopes can have mirror components which are of the cone/cone, hyperbola/parabola, cylinder/cylinder or hyperboloid/paraboloid type. The telescopes may also have three or more optical elements.

REFERENCES:
patent: 4272158 (1981-06-01), Johnston et al.
patent: 4723247 (1989-02-01), Bhowmik et al.
patent: 4744090 (1988-05-01), Freiberg
patent: 4841541 (1989-06-01), Sziklas et al.
"Design of Ring Resonator for Burst Mode Free Electron Laser" S. V. Gunn and K. C. Sun, AIAA 19th Fluid Dynamics, Plasma Dynamics and Lasers conference--Jun. 8-10, 1987, pp. 1, 2, 3.

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