Optical frequency second harmonic generator

Details Optical frequency second harmonic generator Optical frequency second harmonic generator

1991-05-08

1992-09-29

Davie, James W.

Optical: systems and elements

Optical frequency converter

Harmonic generator

372 6, 372 22, 385122, G02F 137

Patent

active

051518171

ABSTRACT:
Applicants have discovered photo-induced second harmonic generation in rare earth doped glass bodies free of germanium. Moreover, applicants have discovered that multivalent rate-earth doped glass bodies can be made with conversion efficiency of second harmonic generation in excess of 10.sup.-3 % per watt, exceeding the reproducible efficiency of germanium doped glass. In accordance with the invention, a light source of a desired frequency comprises a body of glass doped with a multivalent rare earth element, an optical input source of light at one-half the desired frequency, and utilization means for receiving light passing through said body and utilizing light at the desired frequency.

REFERENCES:
patent: 4666247 (1987-05-01), MacChesney et al.
patent: 5084881 (1992-01-01), Farries et al.
E. V. Anoikin et al, "Photoinduced second-harmonic generation in gamma-ray-irradiated optical fibers", 15 Optics Letters, pp. 834-835, (Aug. 1, 1990).
E. Snitzer, 148 Journal of the Less Common Metals, pp. 45-58 at pp. 55-57 (1989).
N. B. Baranova et al, "Extension of holography to multifrequency fields", JETP Lett., 45, pp. 717-719, (Jun. 1987).
E. M. Dianov et al, "Problem of the photoinduced second harmonic generation in optical fibers", Sov. J. Quantum Electron, 19, pp. 575-576, (May 1989).
D. Z. Anderson, et al, "Model for second-harmonic generation in glass optical fibers based on asymmetric photoelectron emission from defect sites" Optics Letters, vol. 16, No. 11, pp. 796-798, (1991).

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