Title :
Tuning characteristics of a tunable-single-frequency external-cavity laser
Author :
Chuang, Z.M. ; Cohen, D.A. ; Coldren, Larry A.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA
fDate :
7/1/1990 12:00:00 AM
Abstract :
The lasing characteristics of a tunable-single-frequency laser operated in conjunction with a tunable external cavity are investigated. The effect of phase error in the external cavity on the lasing frequency, linewidth, and output power is calculated by deriving the characteristic equation for the FP cavity as a traveling amplifier with an effective mirror concept. The analysis suggests that the diode laser and the external cavity may be successfully tuned open-loop if the feedback strength is appropriate and the tuning nonlinearities in the active and passive cavities are not too severe. This is demonstrated by maintaining a linewidth of 4 MHz while tuning continuously over 34 GHz
Keywords :
laser cavity resonators; laser theory; laser tuning; semiconductor junction lasers; spectral line breadth; FP cavity; Fabry Perot cavity; active cavities; diode laser; effective mirror concept; feedback strength; laser theory; lasing frequency; lasing linewidth; lasing output power; open-loop; passive cavities; phase error; traveling amplifier; tunable external cavity; tunable-single-frequency external-cavity laser; tuning nonlinearities; Laser feedback; Laser modes; Laser stability; Laser theory; Laser transitions; Laser tuning; Optical control; Optical feedback; Power lasers; Tunable circuits and devices;
Journal_Title :
Quantum Electronics, IEEE Journal of
