Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1984-02-17
1986-10-28
Heyman, John S.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307246, 328 67, 350393, H03K 326, H03K 386, H02B 530
Patent
active
046201130
ABSTRACT:
A Pockels cell driver useful to operate the Pockels cell as an optical shutter to select one or more laser pulses out of a train of laser pulses when the Pockels cell is placed between crossed polarizers. The Pockels cell is connected through a storage capacitor, of higher capacitance than the capacitance of the Pockels cell, directly to a high voltage source and is charged to high voltage. The cell is charged and the storage capacitor is discharged through a microwave triode which is triggered by an avalanche transistor switch circuit. By directly charging the Pockels cell, lower currents are used than with conventional Pockels cell drivers using transmission lines to connect to the Pockels cell and gas filled tubes to switch a pulse-forming line. The Pockels cell shutter can be operated to provide transmission intervals for the laser pulses of the order of a nanosecond at high repetition rates, up to 10 KHz, without jitter in the timing of the transmission interval and for long periods of time without frequent need for replacement of the microwave triode.
REFERENCES:
patent: 2597013 (1952-05-01), Marchetti
patent: 3268822 (1966-08-01), Hickey
patent: 3735153 (1973-05-01), Shukla
patent: 4070589 (1978-01-01), Martinkovic
J. Phys E: Sci. Instrum, "Laser Pulse Selection with Krytron Triggered Kerr Shutter", A. Penzkofer et al., vol. 14, No. 12, Dec. 1981.
Duling, III Irl N.
Letzring Samuel A.
Petras Carl H.
Sizer II Theodore
Davis B. P.
Heyman John S.
Lukacher Martin
The University of Rochester
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