High energy laser

Details High energy laser High energy laser

1981-07-09

1985-02-05

Moskowitz, Nelson

Amplifiers

Parametric amplifiers

Semiconductor type

350174, 372 95, H01S 305, H01S 310

Patent

active

044980515

ABSTRACT:
An apparatus and process for pumping a lasing media (preferably krypton fluoride) over a 500 nanosecond period and thereafter compressing and focusing to a target with a final 10 nanosecond compression wave is disclosed. An exciting 10 nanosecond pulse is shaped in an overall rectangular shape with the major axes vertically aligned and this shaped beam directed upwardly and to the side of a normal extending between parallel and opposed mirrors at remote ends of a chamber. The chamber includes at the top thereof a plurality of stripper mirrors aligned along axes substantially normal to the beam path and tilted upwardly to shave successive segments off the upper portion of the beam. Beam passage opposite to the direction of stripper mirror emission produces a series of emitted shaved beam segments each spaced temporally in accordance with stripper mirror separation. Typically, the telescope is angularly addressed at the lower power and inlet portion of the telescope, amplified in the vicinity of the higher power output and focused to an essentially coplanar scrambler mirror array. The final amplified output from the coplanar scrambler mirror array emits to pulse compression optical train to an outlet wherein final focus to a target for optical compression results.

REFERENCES:
patent: 3501223 (1976-03-01), Roch
patent: 4001705 (1977-01-01), Sinclair et al.
patent: 4321551 (1982-03-01), Blieh et al.
Stepanov et al., "Diffraction in a CW . . . Telescope Cavity", 3/79, pp. 333-336, Sov. Phys. Tech. Phys. 24 (3).
Brodov et al., "Investigation of . . . Glass Plate", 1/82 (by see articles cited at p. 79), pp. 77-89, Sov. Jour. of Quant. Electron., 12 (1).
White et al., "Narrow Linewidth . . . Laser Source", 6/12/81, (but see references cited), p. 80, IEEE Cleo. 81.

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