Amplifiers – Parametric amplifiers – Semiconductor type
Patent
1988-08-23
1989-11-28
Tarcza, Thomas H.
Amplifiers
Parametric amplifiers
Semiconductor type
372 12, H01S 398
Patent
active
048840440
ABSTRACT:
An optical modulator comprises a crystal (15) of material exhibiting the pyroelectric effect, and charge-dissipating means for dissipating any charge built up on the optical faces of the prism. The charge-dissipating means may comprise point electrodes (30) positioned adjacent to the optical faces (21) of the crystal and connected to an alternating-current high-voltage power supply (31). The electrodes produce charged ions which neutralize any charge on the optical faces of the crystal. The crystal may be used as the Q-switch in a laser.
REFERENCES:
patent: 3311845 (1967-03-01), Koester
patent: 3445826 (1969-05-01), Myers
patent: 3713032 (1973-01-01), Wentz
patent: 3820038 (1974-06-01), Tomlinson
patent: 3965439 (1976-06-01), Firester
patent: 4375684 (1983-03-01), Everett
patent: 4628222 (1986-12-01), Lewis
patent: 4739507 (1988-04-01), Byer et al.
Eggleston Richard A.
Heywood Peter J.
Ferranti International Signal plc
Hellner Mark
Tarcza Thomas H.
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