Title :
Frequency stabilization of DBR diode laser against Cs absorption lines at 852 nm using the modulation transfer method
Author :
Bertinetto, Fabrizio ; Cordiale, Paolo ; Galzerano, Gianluca ; Bava, Elio
Author_Institution :
Istituto di Metrologia Gustavo Colonnetti, CNR, Torino, Italy
fDate :
4/1/2001 12:00:00 AM
Abstract :
Preliminary results on absolute frequency stabilization of Distributed Bragg Reflector (DBR) diode lasers with emission wavelength at 852 nm are reported. Saturated absorption D2 lines of cesium atoms have been adopted as a frequency reference and the nonlinear spectroscopy method of modulation transfer has been used to lock the laser frequency against the resonance. The analysis of the beat signal between two independent laser systems has showed a relative frequency stability of 10-11 for an integration time of 0.1 s, and a frequency noise floor in the order of ≈10-12 for an integration time of 1 s seems attainable
Keywords :
caesium; distributed Bragg reflector lasers; frequency standards; laser frequency stability; measurement by laser beam; semiconductor lasers; 0.1 s; 1 s; 852 nm; Cs; Cs absorption lines; Cs atoms; DBR diode laser; absolute frequency stabilization; beat signal; diode lasers; distributed Bragg reflector; emission wavelength at 852 nm; frequency noise floor; frequency reference; integration time 0.1 s; integration time 1 s; modulation transfer; modulation transfer method; nonlinear spectroscopy; relative frequency stability; saturated absorption D2 lines; Absorption; Atom lasers; Atomic beams; Diode lasers; Distributed Bragg reflectors; Laser noise; Laser stability; Resonance; Resonant frequency; Spectroscopy;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
