Coherent light generators – Raman laser
Patent
1982-09-22
1985-03-12
Sikes, William L.
Coherent light generators
Raman laser
307425, 307426, H01S 330
Patent
active
045049491
ABSTRACT:
An anti-Stokes Raman up-converter is disclosed which is capable of up-converting a variety of conventional laser sources. A metal-halide, for example, thallium chloride or thallium iodide, is employed as a lasing medium, and is photodissociated to create a population inversion in a metastable state of the metal ion. An excimer laser, for example, and ArF* or KrF* excimer laser, may be employed to photodissociate the metal-halide in accordance with the present invention. Alternatively, an excimer flashlamp, for example a ArF* or KrF* flashlamp, may be employed to photodissociate the metal-halide in accordance with the present invention. A conventional laser source, for example a CO.sub.2 laser or any harmonic of a Nd:YAG laser, is subsequently employed to pump the population inversion from the metastable state to a virtual level near an intermediate state. Anti-Stokes Raman lasing occurs from this virtual state, where the lasing frequency is greater than the frequency of the conventional laser pump source.
REFERENCES:
patent: 4144464 (1979-03-01), Loree et al.
patent: 4151486 (1979-04-01), Itzkan et al.
patent: 4213060 (1980-07-01), Byer et al.
patent: 4218628 (1980-08-01), Harris
patent: 4239995 (1980-12-01), Feldman et al.
Ehrlich et al.; Alkali-Metal Resonance-Line Lasers Based on Photodissociation"; Appl. Phys. Lett., vol. 34, No. 10, May 15, 1979.
Ehrlich et al.; "Obs. of Stimulated Level Shifting in Inverted Atomic Thallium Populations"; Phys. Rev. Lett., vol. 44, No. 13, Mar. 31, 1980.
Van Veen et al.; "Photofragmentation of Thallium Halides"; Chemical Phys., vol. 55, 1981.
Garman et al.; "Observation of Stimulated Anti-Stokes Raman Scattering in Inverted Atomic Iodine; Phy. Rev. Lett., vol. 33, No. 4, Jul. 22, 1974.
J. C. White; "Inversion of the Na Resonance Line by Selective Photodissociation of NaI"; Appl. Phys. Lett., vol. 33, No. 4, Aug. 15, 1978.
Chilukuri; "Selective Opt. Excitation and Inversions via the Excimer Channel: Superradiance at the Thallium Green Line"; Appl. Phys. Lett., vol. 34, No. 4, Feb. 15, 1979.
White et al.; "Efficiency Studies of the Thallium Anti-Stokes Raman Laser"; IEEE Jour. of Quant. Electronics, vol. QE-18, No. 6, Jun. 1982.
White et al., "Anti-Stokes Raman Laser"; Phys. Rev. A, vol. 25, No. 2, Feb. 1982.
AT&T Bell Laboratories
Jr. Leon Scott
Koba Wendy W.
Pfeifle Erwin W.
Sikes William L.
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