Slow propagation of externally injected light pulses in coupled semiconductor laser arrayJ. Scheuer
School of Electrical Engineering, Tel-Aviv University - Israel
received 21 September 2006; accepted in final form 19 December 2006; published February 2007
published online 9 February 2007
The propagation on an optical pulse injected into an array of semiconductor lasers is studied. Below lasing threshold, the array supports distortion-free, low-loss, slow-light propagation. Approximated expressions for the group velocity and the attenuation coefficient are derived analytically and verified numerically. The tradeoffs between the amplitude attenuation and the group delay are analyzed and an optimal pumping level, providing maximum output power for a desirable delay, is found.
42.55.Px - Semiconductor lasers; laser diodes.
42.55.Sa - Microcavity and microdisk lasers.
42.60.Da - Resonators, cavities, amplifiers, arrays, and rings.
© Europhysics Letters Association 2007