Amplifiers – Parametric amplifiers – Semiconductor type
Patent
1983-02-04
1985-11-05
Buczinski, S. C.
Amplifiers
Parametric amplifiers
Semiconductor type
372 93, H01S 300
Patent
active
045516847
ABSTRACT:
Amplified spontaneous emission is substantially reduced in a novel optical amplifier wherein the gain medium is disposed within a converging region of the coherent signal, which converging region terminates in a waist at or near a limiting stop or saturable absorber. In contrast to the converging coherent signal flux, the amplified spontaneous emission flux is nonconverging and therefore most of the latter is removed by a spatial filter or saturable absorber.
REFERENCES:
patent: 3235813 (1966-02-01), Kogelnik et al.
patent: 4158176 (1979-01-01), Hunt et al.
patent: 4191928 (1980-03-01), Emmett
patent: 4257071 (1981-03-01), Bradley et al.
Bichsel, et al., "Photolytically Pumped XeF (C-A) Laser Studies", J. Appl. Phys., vol. 52, pp. 4429-4434, (1981).
Migus, et al., "Amplification of Subpicosecond Optical Pulses: Theory and Experiment", IEEE Journal of Quantum Electronics, vol. 18, p. 101.
Buczinski S. C.
Spectra-Physics Inc.
Wallace Linda J.
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