Time-sharing laser

Details Time-sharing laser Time-sharing laser

1995-05-02

1996-10-01

Bovernick, Rodney B.

Coherent light generators

Particular beam control device

Control of pulse characteristics

372 12, H01S 310

Patent

active

055616780

ABSTRACT:
A system for generating a pulsed laser beam includes a laser source and a mode locker which are mounted in a housing that defines a beam path for light from the laser source. An electro-optical crystal is positioned on the beam path to selectively polarize light traveling along the beam path. In operation, the crystal is repetitively advanced through a three period working cycle. At the beginning of the no-lase period which initiates each working cycle, the electro-optical crystal is partially activated. After a predetermined period, pumping of the laser source begins. Next, in the pulse shaping or pre-lasing period, the mode locker becomes active to produce a single compressed pulse in the laser cavity. After pulse-shaping the system for approximately two-hundred and fifty to three-hundred microseconds, the electro-optical crystal is fully activated to start the amplification period to create an amplified laser pulse. The amplification period lasts for approximately two-tenths of one microsecond (0.2 .mu.s) to one microsecond (1 .mu.s). The crystal is then again deactivated to eject the amplified pulses from the cavity and initiate another working cycle.

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