Device for applying a laser pulse delivered by a laser oscillato

Details Device for applying a laser pulse delivered by a laser oscillato Device for applying a laser pulse delivered by a laser oscillato

1975-12-22

1978-06-06

Moskowitz, Nelson

Amplifiers

Parametric amplifiers

Semiconductor type

331 945P, 331 945C, H01S 3081, H01S 3091

Patent

active

040939243

ABSTRACT:
A light-amplifying medium is pumped by an auxiliary excitation source and has a number of energy levels, the laser transition being intended to correspond to the laser pulse delivered by the oscillator and to take place between the upper laser level and the lower laser level. Mirrors placed around the amplifying medium reflect the laser pulse from one mirror to the next so that the time interval between two successive pulse traversals within the amplifying medium is longer than the time of population transfer between on the one hand the upper reserve level and the upper laser level and on the other hand the lower laser level and the lower reserve level. The amplifying medium is thus regenerated by population exchange at the lower and upper levels between each pulse traversal through the amplifying medium.

REFERENCES:
patent: 3460046 (1969-08-01), Arnaud
patent: 3732013 (1973-05-01), Neislmair et al.
patent: 3895313 (1975-07-01), Seitz
patent: 3942127 (1976-03-01), Eluhr et al.
Schappert, "Short Pulse Amplification and Rotational Relaxation in CO.sub.2 Amplifiers", 1973, pp. 1-3, 1973, IEEE/OSA Conference.
Girard et al., "CO.sub.2 Pulse Lasers", 1974, pp. 446-455, L'Onde Electrique 9.
Shappert, "Rotational Relaxation Effects in Short Pulse CO.sub.2 Amplifiers", Sep. 15, 1973, pp. 319-321, Appl. Phys. Lett., vol. 23, #6.
Girard et al., "TEA CO.sub.2 Lasers", Nov. 1974, pp. 446-455, Onde Electr. (France), vol. 54, #9.
Amandillo et al., "Pulse Propagation in CO.sub.2 Laser Amplifiers", Dec. 21, 1975, pp. 2123-2135, J. Phys. D. (GB), vol. 8, #18.

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