Issue
EPL
Volume 77, Number 4, February 2007
Article Number 44004
Number of page(s) 5
Section Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics
DOI http://dx.doi.org/10.1209/0295-5075/77/44004
Published online 09 February 2007
EPL, 77 (2007) 44004
DOI: 10.1209/0295-5075/77/44004

Slow propagation of externally injected light pulses in coupled semiconductor laser array

J. 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

Abstract
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.

PACS
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