Title :
Stabilization of millimeter-wave frequencies from passively mode-locked semiconductor lasers using an optoelectronic phase-locked loop
Author :
Buckman, Lisa A. ; Georges, John B. ; Park, John ; Vassilovski, Dan ; Kahn, Joseph M. ; Lau, Kam Y.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., California Univ., Berkeley, CA, USA
Abstract :
The use of an optoelectronic phase-locked loop to stabilize the pulsation frequency of a three-section, passively mode-locked quantum well laser diode at 41 GHz is discussed. It is shown that the free-running mode-locked signal, with a radio frequency (RF) linewidth of 770 kHz, can be stabilized to the linewidth of a reference RF oscillator (<1 kHz). The stabilized mode-locked signal has a phase noise of -70 dBc/Hz at 370 kHz offset. Tracking of the mode-locked signal to the external reference RF oscillator is maintained over 11 MHz. This is, in effect, an actively mode-locked laser source at 41 GHz.<>
Keywords :
laser mode locking; masers; phase-locked loops; semiconductor device noise; semiconductor lasers; spectral line breadth; 11 MHz; 41 GHz; 770 kHz; RF linewidth; RF oscillator; actively mode-locked laser source; free-running mode-locked signal; millimeter-wave frequencies; optoelectronic phase-locked loop; passively mode-locked; passively mode-locked semiconductor lasers; phase noise; pulsation frequency stabilisation; quantum well laser diode; radio frequency; reference oscillator; three-section; Electrons; Fiber lasers; Laser mode locking; Laser modes; Laser stability; Laser tuning; Optical pulse generation; Quantum well lasers; Radio frequency; Semiconductor lasers;
Journal_Title :
Photonics Technology Letters, IEEE
