Modulators – Amplitude modulator – Nonlinear device controlled by modulating signal
Patent
1976-03-26
1977-12-13
Moskowitz, Nelson
Modulators
Amplitude modulator
Nonlinear device controlled by modulating signal
307 883, 325430, H01S 322, H03F 702
Patent
active
040631958
ABSTRACT:
In the disclosed parametric frequency converter a dc electric field is utilized to remove spatial inversion symmetry of NH.sub.2 D gas molecules contained in a Stark cell. Simultaneous introduction into the Stark cell of a laser beam at a frequency f.sub.1 (e.g., corresponding to about 10.6 .mu.m) and microwaves at a frequency f.sub.2 (e.g., about 4.1 GHz) produces resonantly enhanced parametric mixing of the frequencies f.sub.1 and f.sub.2, resulting in the generation of a laser beam at the difference frequency f.sub.3 = f.sub.1 - f.sub.2.
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patent: 3720882 (1973-03-01), Tang et al.
patent: 3983406 (1976-09-01), Lax et al.
patent: 3984675 (1976-10-01), Corcoran et al.
patent: 4006363 (1977-02-01), Schlossberg
Abrams et al., "10.6 Micron Parametric Frequency Converter," 11/30/75, pp. 1-57, NTIS AD-A017 863/25L, Semi-Annual Tech. Report.
Abrams et al., "10.6 Micron Parametric Frequency Converter," 3/75, pp. 1-34, NTIS AD-009 112/45L, Semiannual Tech. Report.
Landman et al., "Light Modulation by Means of the Stark Effect . . .," 12/1/69, pp. 357-360, A.P.L. vol. 15, No. 11.
Abrams Richard L.
Yariv Amnon
Coble P. M.
Hughes Aircraft Company
MacAllister W. H.
Moskowitz Nelson
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