论文信息 - Suppression of Q-switching instabilities of passively modelocked semiconductor lasers by a passive electrical circuit

Suppression of Q-switching instabilities of passively modelocked semiconductor lasers by a passive electrical circuit

The elimination of Q-switching instabilities in passively modelocked monolithic semiconductor lasers by connecting passive electrical components to the absorber section is demonstrated. Suppression of Q-switching and Q-switched modelocking for a passively modelocked monolithic two-section quantum-dot tapered laser are achieved. In addition, extension of the modelocking operation range towards lower gain currents is accomplished, thus improving generation of ultrashort pulses. The suppression is attributed to the effective damping of low-frequency photocurrent fluctuations in the absorber section.

[1] Allister I. Ferguson,et al. Active stabilization of quasi-CW passively modelocked Nd:based lasers using closed-loop feedback , 2003, Other Conferences.

[2] R. Nietzke,et al. Mode locking of a semiconductor laser by self-synchronising optoelectronic feedback of the longitudinal mode beats , 1990 .

[3] Guillaume Huyet,et al. Experimental investigation of different regimes of mode-locking in a high repetition rate passively mode-locked semiconductor quantum-dot laser. , 2009, Optics express.

[4] L. O'Faolain,et al. An experimental and numerical study of Q-switched mode-locking in monolithic semiconductor diode lasers , 2004, IEEE Journal of Quantum Electronics.

[5] Mindaugas Radziunas,et al. Experimental investigations on the suppression of Q-switching in monolithic 40 GHz mode-locked semiconductor lasers , 2006 .

[6] E. Rafailov,et al. Mode-locked quantum-dot lasers , 2007 .

[7] E. Avrutin,et al. Suppression of Q-switching instabilities in broadened-waveguide monolithic mode-locked laser diodes , 2008 .