Title :
A digital control system for iodine stabilized lasers
Author :
Ahola, T. ; Hu, J. ; Ikonen, E.
Author_Institution :
Metrol. Res. Inst., Helsinki Univ. of Technol., Espoo, Finland
Abstract :
A digital system for the control of iodine stabilized He-Ne lasers used as an optical frequency standard has been developed. The system is more flexible than previously developed systems and automation is incorporated. A new locking method for higher harmonic locking has been developed and included in the system. We call it the third harmonic derivative (3hD) method.
Keywords :
digital control; frequency modulation; frequency standards; gas lasers; helium; iodine; laser frequency stability; laser tuning; neon; optical modulation; optical variables control; physical instrumentation control; He-Ne; I/sub 2/; I/sub 2/-stabilized He-Ne lasers; automation; digital control system; flexible system; frequency tuning; higher harmonic locking method; optical frequency standard; third harmonic derivative method; Absorption; Digital control; Frequency; Hardware; Laser stability; Laser transitions; Laser tuning; Metrology; Power harmonic filters; Signal processing algorithms;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1998 Conference on
Conference_Location :
Washington, DC, USA
Print_ISBN :
0-7803-5018-9
DOI :
10.1109/CPEM.1998.699890
