Frequency stabilized laser

Details Frequency stabilized laser Frequency stabilized laser

1984-08-10

1986-05-27

Scott, Jr., Leon

Coherent light generators

Particular beam control device

Optical output stabilization

372 38, 372 28, 372 20, H01S 313

Patent

active

045920583

ABSTRACT:
A frequency control system for a laser for compensating for thermally-induced laser resonator length changes. The frequency control loop comprises a frequency reference for producing an error signal and electrical means to move a length-controlling transducer in response thereto. The transducer has one of the laser mirrors attached thereto. The effective travel of the transducer is multiplied severalfold by circuitry for sensing when the transducer is running out of extension and in response thereto rapidly moving the transducer and its attached mirror toward its midrange position.

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