Title :
Design of frequency stabilization control system based on F-P cavity for semiconductor laser
Author :
Liu Bo ; Liang Wei ; Sun Huilin ; Li Jianxia
Author_Institution :
Higher Educ. Key Lab. for Meas. & Control Technol. & Instrumentations of Heilongjiang Province, Harbin Univ. of Sci. & Technol., Harbin, China
Abstract :
A frequency stabilization control system based on confocal F-P interferometer for semiconductor lasers is introduced to realize a stable frequency output. The system consists of the MCU MSP430, F-P confocal interferometer, current control and temperature control system. Giving an audio scanning voltage to the interferometer can make the laser power modulation. Then frequency offset can be got with the Lock-in Amplifier. Through the work of the servo system controls the working temperature and drive current of laser, frequency stability can be achieved. This method is not only simple in structure, but not band limit, and the frequency stabilization reaches 10-8.
Keywords :
electric current control; frequency control; interferometers; laser frequency stability; microcontrollers; semiconductor lasers; servomechanisms; temperature control; F-P cavity; MCU MSP430; audio scanning voltage; confocal F-P interferometer; current control system; frequency stabilization control system design; laser power modulation; lock-in amplifier; semiconductor laser; servo system controls; temperature control system; Current control; Frequency modulation; Laser stability; Semiconductor lasers; Sun; Time frequency analysis; Laser frequency stabilization; confocal F-P interferometer; current control; semiconductor laser; temperature control;
Conference_Titel :
Strategic Technology (IFOST), 2011 6th International Forum on
Conference_Location :
Harbin, Heilongjiang
Print_ISBN :
978-1-4577-0398-0
DOI :
10.1109/IFOST.2011.6021047
