Title :
Simple digital technique for efficient frequency locking of diode-pumped Nd:YAG lasers
Author :
Gelmini, E. ; Minoni, U. ; Docchio, F.
Author_Institution :
Dipartimento di Elettronica per l´Autom., Brescia Univ.
fDate :
1/6/1994 12:00:00 AM
Abstract :
A simple and easy to implement digital technique for frequency locking of a pair of diode-pumped solid state lasers is presented. The beat frequency of the two lasers, suitably prescaled, is compared to a reference oscillator. The error signal is used to drive the slave laser via its in-built PZT. An Allan variance of 1 part in 10-6 over a typical measurement time of 0.1s, over the whole range of synthetic wavelengths of interest, proves the effectiveness of the locking system
Keywords :
laser mode locking; neodymium; optical pumping; solid lasers; 0.1 s; Allan variance; Nd:YAG lasers; PZT; PbZrO3TiO3; YAG:Nd; YAl5O12:Nd; beat frequency; digital technique; diode-pumped; error signal; frequency locking; in-built PZT; measurement time; reference oscillator; slave laser; solid state lasers; synthetic wavelengths;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19940028
