Method and means for controlling population inversion and electr

Details Method and means for controlling population inversion and electr Method and means for controlling population inversion and electr

1973-08-01

1976-11-16

Webster, Robert J.

Oscillators

Molecular or particle resonant type

331 945P, 331 945K, H01S 310, H01S 3094

Patent

active

039926818

ABSTRACT:
A method for controlling the population inversion in a solid state laser material by optically pumping the material with a laser beam having a wavelength corresponding to the absorption band of the laser material and the output of which is spatially and temporally modulated. Spatial and temporal modulations of the population inversion in the pumped material are achieved by means of a two-dimensional spatial modulator positioned between the pump laser beam and the pumped laser material, the modulation being thermo-optically controlled by a scanning electron or laser beam or electro-optically controlled by a scanning electron beam or acousto-optically controlled by a two-dimensional acousto-optical modulator. Utilization of a lens between the spatial modulator and the optical cavity of the laser material permits electronic deflection of the output from said laser material by focusing the beam transmitted through said spatial modulator.

REFERENCES:
patent: 3178657 (1965-04-01), Morse
patent: 3292103 (1966-12-01), Soules et al.
patent: 3439169 (1969-04-01), Lynch
patent: 3774121 (1973-11-01), Ashkin et al.
Birnbaum et al., Proceedings of the IEEE, June 1968, pp. 1096-1097.
Dienes et al., IEEE J. Quantum Electronics, vol. 8, No. 3.

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