Title :
Automatic locking of a semiconductor laser at /spl lambda//spl ap/633 nm on linear absorption iodine transitions
Author :
Zarka, A. ; Chartier, J. ; Cliche, J.-F. ; Tetu, M.
Author_Institution :
BIPM, Pavillon de Breteuil, France
Abstract :
A 633 nm laser diode was frequency tuned by its injection current and was automatically locked on specific linear absorption lines of iodine by using a digital line identification system. The setup provides a low cost optical frequency reference that is precise enough to replace He-Ne references in many metrological applications.
Keywords :
automatic frequency control; digital control; frequency modulation; frequency standards; hyperfine structure; iodine; laser frequency stability; laser tuning; optical modulation; optical variables control; physical instrumentation control; semiconductor lasers; 633 nm; I/sub 2/; automatic locking; digital line identification system; digital locking system; frequency stability; frequency standard; frequency tuned; injection current; laser diode; linear absorption iodine transitions; low cost optical frequency reference; microprocessor based device; semiconductor laser; single mode tuning; Absorption; Current measurement; Diode lasers; Frequency measurement; Laser stability; Laser theory; Laser transitions; Laser tuning; Optical control; Semiconductor lasers;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1998 Conference on
Conference_Location :
Washington, DC, USA
Print_ISBN :
0-7803-5018-9
DOI :
10.1109/CPEM.1998.699892
