Coherent light generators – Raman laser
Patent
1982-05-10
1984-12-04
Sikes, William L.
Coherent light generators
Raman laser
372 39, 372 20, 372 69, H01S 330
Patent
active
044868847
ABSTRACT:
An anti-Stokes Raman laser is disclosed which is tunable over a range of 10-70 cm.sup.-1. An alkali halide is used as the lasing medium and a metastable halide population inversion is created with respect to the ground state of the halide by selective photodissociation of the alkali halide. A pump laser is then employed to move the population from the metastable state to a region near an intermediate state of the halide. The population subsequently falls back to the initial ground state, thereby creating the anti-Stokes Raman emission. Since the intensity of the photodissociation is directly proportional to the amount of population inversion achieved, and hence, to the region the population may be pumped to, the tuning of the output anti-Stokes Raman lasing is a function of the intensity of the initial photodissociation.
REFERENCES:
White et al., "Tunable, 1/2nm Iodine Anti-Stokes Raman Laser", Opt. Lett., vol. 7, No. 5, May 1982.
White et al., "Anti-Stokes Raman Laser", Phys. Rev. A, vol. 25, No. 2, Feb. 1982, pp. 1226-1229.
White, "Inversion of the Na Resonance Line by Selective Photodissociation of NaI", Appl. Phys. Lett., 33, (4), Aug. 15, 1978.
White et al., "Tuning and Saturation Behavior of the Anti-Stokes Raman Laser", AIP Conf. Proceed., No. 100, No. 3, Excimer Lasers 1983, edited by Rhodes et al.
AT&T Bell Laboratories
Jr. Leon Scott
Koba Wendy W.
Pfeifle Erwin W.
Sikes William L.
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