Method of maintaining a predetermined beam direction in a laser

Details Method of maintaining a predetermined beam direction in a laser Method of maintaining a predetermined beam direction in a laser

1983-01-21

1985-02-05

Sikes, William L.

Coherent light generators

Particular beam control device

Having particular beam control circuit component

372 9, 372 69, 372 38, H01S 313

Patent

active

044981805

ABSTRACT:
The invention relates to a method and an apparatus for maintaining a predetermined beam direction in a laser pulse transmitter having a laser resonator including a laser rod (1) with a rotating prism (2) at one end and output coupler (3) at its other end, as well as a flash lamp (4) which is energized to emit a flash pulse for pumping the laser rod (1) with light energy. In accordance with the invention, the deviation of the beam from the predetermined beam direction is measured with the aid of a measuring circuit (13-18), subsequent to which the working point of the laser pulse transmitter is adjusted in response to the magnitude and polarity of the deviation to a predetermined working point corresponding to the predetermined beam direction, e.g. by altering the flash pulse energy.

REFERENCES:
patent: 3315177 (1967-04-01), Benson
patent: 3393374 (1968-07-01), Krumboltz
patent: 3548253 (1970-12-01), Alon

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