Accession Number:

ADD008898

Title:

An Improved Electro-Optical Modulator for an Electro-Optically Modulated Laser.

Descriptive Note:

Patent Application,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

Report Date:

1981-03-06

Pagination or Media Count:

18.0

Abstract:

The present invention provides a jitter stable electro-optical modulator for modulating a high power, repetitively pulsed laser having an optical risetime 10 to 90 of the order of nanoseconds. The electro-optical modulator includes a birefringent electro-optical device a hydrogen thyratron operated at a preselected high pressure and having an ON and an OFF state first means responsive to the ON state of the thyratron for impressing a first preselected voltage across the birefringent electro-optical device second means responsive to the OFF state of the hydrogen thyratron for impressing a second preselected voltage across the electro-optical modulator at a time coincident with the laser buildup interval and means for repetitively driving the hydrogen thyratron into the ON and the OFF states repetitively at a preselected repetition rate. The selectively pressurized hydrogen thyratron is placed within a close-fitting vented copper housing and is electrically connected across the electrodes of the birefringent device by an impedance matching network and a coaxial cable. Author

Subject Categories:

  • Lasers and Masers
  • Electrooptical and Optoelectronic Devices

Distribution Statement:

APPROVED FOR PUBLIC RELEASE