Laser frequency stabilization

Patent · Tue Nov 20 04:00:00 EST 1990

OSTI ID:5154549

Braski, M T

This paper discusses, in a laser having a laser cavity containing a lasing medium that is excited by an RF signal from an RF signal source to generate energy oscillations of a selected frequency in the cavity , the RF signal being reflected from the laser to provide an RF return signal having a minimum magnitude when impedance of the laser and source are matched, apparatus for stabilizing frequency of the laser. It comprises means for sensing magnitude of the RF return and varying the RF signal source to increase the RF return magnitude when the sensed RF return magnitude approaches the minimum magnitude; a laser frequency control device coupled with the laser; and means responsive to the RF return for operating the control device to control the laser frequency.

• Assignee: Hughes Aircraft Co., Los Angeles, CA (USA)
• Patent Number(s): US 4972425; A
• Application Number: PPN: US 7-400846
• OSTI ID: 5154549
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
CONTROL
CONTROL EQUIPMENT
EQUIPMENT
FREQUENCY CONTROL
LASER CAVITIES
LASER MATERIALS
LASERS
MATERIALS
RF SYSTEMS