An improved electro-optical modulator for an electro-optically modulated laser
Patent
·
OSTI ID:5610255
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.
- Assignee:
- ERA-07-034469; EDB-82-084770
- Patent Number(s):
- None
- OSTI ID:
- 5610255
- Country of Publication:
- United States
- Language:
- English
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