Title :
Femtosecond Bloch vector control in quantum wells
Author :
Baumberg, J.J. ; Heberle, A.P. ; Kohler, Klaus
Author_Institution :
Hitachi Cambridge Univ., UK
Abstract :
Summary form only given.We report on a general approach to coherent control in semiconductors, based on optical waveforms with synthesized intensity and phase versus time. This technique is limited only by the bandwidth of the initial laser pulses and the spectral resolution of the pulse-shaping apparatus. It is therefore especially suitable to investigate effects such as off-resonant Rabi oscillations and polaritons in multiple quantum wells. Experiments were performed in four-wave mixing (FWM) and differential reflection geometry based on a mode-locked Ti:sapphire laser emitting 100-fs pulses.
Keywords :
high-speed optical techniques; light coherence; multiwave mixing; reflectivity; semiconductor quantum wells; vectors; 100 fs; coherent control; differential reflection geometry; femtosecond Bloch vector control; four-wave mixing; fs pulses; initial laser pulses; mode-locked Ti:sapphire laser; multiple quantum wells; off-resonant Rabi oscillations; optical waveforms; polaritons; pulse-shaping apparatus; quantum wells; spectral resolution; synthesized intensity; Bandwidth; Four-wave mixing; Laser mode locking; Nonlinear optics; Optical control; Optical mixing; Optical pulses; Quantum well lasers; Semiconductor lasers; Ultrafast optics;
Conference_Titel :
Quantum Electronics Conference, 1998. IQEC 98. Technical Digest. Summaries of papers presented at the International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
1-55752-541-2
DOI :
10.1109/IQEC.1998.680013
