Accession Number : ADD017425

Title :   Method and Apparatus for Locking Laser Wavelength to an Atomic Transition.

Descriptive Note : Patent, Filed 13 Jun 94, patented 14 Feb 95,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Miller, Stephen A

Report Date : 14 Feb 1995

Pagination or Media Count : 13

Abstract : An apparatus and method for stabilizing laser light wavelength relative to a resonant optical absorption works with both continuous wave and pulsed lasers and employs the phenomenon of Zeeman energy level splitting to provide a error signal indicative of both the direction and magnitude of wavelength error. A laser system including a wavelength adjusting means produces laser light at a wavelength which differs by an adjustable amount from a resonant absorption wavelength of a selected substance. A first portion of the laser light is propagated through a right circular polarizing means to provide right circularly polarized (RCP) laser light. RCP laser light is propagated through a first volume occupied by the selected substance, said first volume being disposed in a magnetic field.

Descriptors :   *MODE LOCKED LASERS, *PATENTS, *ZEEMAN EFFECT, STABILIZATION, FREQUENCY, SETTING(ADJUSTING), OPTICAL PROPERTIES, MAGNETIC FIELDS, CONTINUOUS WAVES, PULSED LASERS, LASER BEAMS, RADIATION ABSORPTION, FEEDBACK, SIGNALS, ERRORS, SPLITTING, ELECTRON TRANSITIONS, ENERGY LEVELS, RESONANCE ABSORPTION, LOCKING(ELECTRONICS)

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE