Title :
Coherence and nonlinearity of femtosecond secondary emission from excitons in GaAs quantum wells
Author :
Woerner, Michael ; Shah, J.
Author_Institution :
Lucent Technol., AT&T Bell Labs., Holmdel, NJ, USA
Abstract :
Summary form only given.We have investigated the nature and dynamics of resonant secondary emission from quantum wells, a subject of considerable current interest, using a novel approach in which the sample is resonantly excited by a pair of phase-locked pulses, and the emission is detected by femtosecond upconversion. This technique allows us to probe the dynamics of photoexcited polarization from a distinct perspective and gives new insights in the femtosecond dynamics of secondary emission (SE) and its coherence properties simultaneously.
Keywords :
excitons; gallium arsenide; high-speed optical techniques; light polarisation; resonant states; secondary electron emission; semiconductor quantum wells; GaAs; GaAs quantum wells; coherence properties; excitons; femtosecond dynamics; femtosecond secondary emission; femtosecond upconversion; light coherence; nonlinearity; phase-locked pulses; photoexcited polarizatio; resonant secondary emission; resonantly excited; secondary emission; Equations; Excitons; Frequency; Gallium arsenide; Optical pulses; Optimized production technology; Probes; Resonance; Space vector pulse width modulation; 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.1998.680014
