Quantum Control of Intensity in Semiconductor Laser Amplifiers

Angela Hohl, Rajarshi Roy

Optical bistability in a semiconductor laser-amplifier system has been investigated previously and found to exhibit switching at very low intensities.

A. E. Glassgold, Dennis Holliday

WU, Jian-Wei, BAO, Hai-Bo

A nonlinear process between co-propagating signal and control pulses has been proposed and demonstrated numerically, based on semiconductor optical amplifiers (SOA). Results show that a Gaussian signal pulse with picosecond duration can be simultaneously amplified and compressed in a SOA by utilizing a co-propagating high-intensity control pulse. To obtain high quality signal pulse with high peak power level and short pulse width, the center carrier wavelengths of two pulses should locate in the gain region of the SOA. The initial delay time between both pulses should be tuned suitably before entering the SOA.

Eugene B. Gordon, Iu. L. Moskvin

Yi Mu

D. Kagan, Harry Friedmann

A simple four-level model is used to describe two-band systems such as dyes and semiconductors. The system is irradiated by a bichromatic input in an optical cavity and both fields exhibit optical multistability. The calculations take into account the possibility of noncoherent (electrical) pumping of the system, thus generalizing the model to include semiconductor laser amplifiers. Since both fields are allowed to resonate in the cavity, a low-intensity control beam and/or the noncoherent pumping intensity can 'tune' and adapt the response of the second input. Some applications of this tunability are outlined.>