Lateral coherence properties of broad‐area semiconductor quantum well lasers

Laser-induced quantum coherence in a semiconductor quantum well.

The phenomenon of electromagnetically induced quantum coherence is demonstrated between three confined electron subband levels in a quantum well which are almost equally spaced in energy. Applying a strong coupling field, two-photon resonant with the 1-3 intersubband transition, produces a pronounced narrow transparency feature in the 1-2 absorption line. This result can be understood in terms ...

Multi-component LDA using coherence properties of semiconductor lasers

We present a multi-component Laser-Doppler Anemometer, in which the channel separation is based on a new method of using the coherence properties of different semiconductor lasers, one for each LDA beam. Instead of requiring, for example, bulky multi-wavelengths lasers, additional opto-electronic components or very-largebandwidth detectors, the compact LDA presented here uses three semiconducto...

Quantum dot semiconductor lasers with optical feedback

G. Huyet; 1, D. O’Brien1, S. P. Hegarty1, J. G. McInerney1, A. V. Uskov2, D. Bimberg3, C. Ribbat3, V. M. Ustinov4, A. E. Zhukov4, S. S. Mikhrin4, A. R. Kovsh4, J. K. White5, K. Hinzer5, and A. J. SpringThorpe6 1 Physics Department, National University of Ireland, University College Cork, Cork, Ireland 2 NMRC, National University of Ireland, University College Cork, Lee Malting, Cork, Ireland 3 ...

Microscopic Spatio-Temporal Dynamics of Semiconductor Quantum Well Lasers and Amplifiers

A Comparison of Amplitude-Phase Coupling and Linewidth Enhancement in Semiconductor Quantum- Well and Bulk Lasers

The amplitude-phase coupling factor a (linewidth enhancement factor) is compared in typical semiconductor quantum-well and bulk double heterostructure lasers. As a direct consequence of the reduction of the differential gain, there is no reduction of a in the single quantum-well lasers compared to the bulk lasers. The number of quantum wells strongly affects the amplitude-phase coupling in quan...