Coherent light generators – Particular pumping means – Pumping with optical or radiant energy
Patent
1981-04-06
1983-06-14
Davie, James W.
Coherent light generators
Particular pumping means
Pumping with optical or radiant energy
372 56, 372 82, H01S 3097
Patent
active
043887201
ABSTRACT:
The present invention comprises an apparatus which provides a combination of excitation pulses or a signle shaped excitation pulse to a plasma-recombination laser which both creates the plasma and controls the electron-ion collisional recombination rate therein. The application of the single shaped excitation pulse or combination of excitation pulses keeps the electron temperature of the plasma at a temperature unfavorable to recombination until the electron density has fallen into the optimum range for laser action. The termination of the excitation pulse or pulses results in immediate laser action having power at least several orders of magnitude over that achieved in the prior art.
REFERENCES:
patent: 4295103 (1981-10-01), Ljudmirsky
Gudzenko et al., "Negative Absorption in a Nonequlibrium Hydrogen Plasma", Sov. Phys. JETP, vol. 18, No. 4, Apr. 1964, pp. 998-1000.
Zeldovich et al., "Electron-Ion Recombination by Three-Body Collisions", Physics of Shock Waves and High Temperature Hydrodynamic Phenomena, vol. I, Academic Press 1966, pp. 406-408.
Silfvast et al., "Recombination Lasers in Expanding CO.sub.2 Laser-Produced Plasmas of Argon, Krypton and Xenon", APL, vol. 31, No. 5, Sep. 1977, pp. 334-337.
Zhukov et al., "Recombination Lasers . . . ", Sov. Jour. Quantum Electron, vol. 7, No. 6, Jun. 1977, pp. 704-708.
Boulmer et al., "Collisional-Radiative Transfer Between Rydberg States of Helium and Electronic Recombination of He.sup.+ ", Phys. Rev. A., vol. 15, No. 4, Apr. 1977, pp. 1502-1512.
Silfvast William T.
Szeto Leo H.
Wood, II Obert R.
Bell Telephone Laboratories Incorporated
Davie James W.
Einschlag Michael B.
Pfeifle Erwin W.
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