Title :
Progress in the realization of a frequency standard at 192.1 THz (1560.5 nm) using 87Rb D2-line and second harmonic generation
Author :
Poulin, Michel ; Cyr, Normand ; Latrasse, Christine ; Têtu, Michel
Author_Institution :
Dept. de Genie Electr., Laval Univ., Que., Canada
fDate :
4/1/1997 12:00:00 AM
Abstract :
Second harmonic generation of a 192.1 THz semiconductor distributed feedback (DFB) laser is achieved using a KNbO3 crystal in a resonant ring cavity. Optical feedback from this cavity is used to stabilize the laser frequency and reduce its linewidth. A second harmonic power of 5.5 μW is generated with 38 mW incident on the cavity. We use the second harmonic signal to observe saturated absorption lines and orientation signals in rubidium vapor. Injection-locking of a 780 nm Fabry-Perot laser using the second harmonic signal is also demonstrated. With this scheme, we observe saturated absorption lines in rubidium
Keywords :
Fabry-Perot resonators; distributed feedback lasers; frequency measurement; laser feedback; laser frequency stability; measurement standards; optical harmonic generation; rubidium; 1560.5 nm; 192.1 THz; 38 mW; 5.5 muW; 780 nm; 87Rb D2-line; Fabry-Perot laser; Injection-locking; KNbO3; KNbO3 crystal; Rb vapor; frequency standard; laser frequency; optical feedback; orientation signals; resonant ring cavity; saturated absorption lines; second harmonic generation; second harmonic power; second harmonic signal; semiconductor distributed feedback laser; Absorption; Distributed feedback devices; Frequency; Laser feedback; Laser stability; Optical feedback; Optical harmonic generation; Resonance; Ring lasers; Semiconductor lasers;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
