Title :
Instantaneous frequency dynamics of coherent wave mixing in semiconductor quantum wells
Author_Institution :
California Univ., Berkeley, CA, USA
Abstract :
Summary form only given. We resolve the femtosecond free polarization decay of excitons in GaAs quantum wells by upconverting the diffracted signal in transient four wave mixing experiments. We find that the temporal profile exhibit large deviations from that expected from isolated atomic like systems. They also represent the first observation of the dynamics of the development of a macroscopic coherence via a Ginzburgh-Landau mechanism
Keywords :
Ginzburg-Landau theory; III-V semiconductors; excitons; gallium arsenide; high-speed optical techniques; light coherence; light polarisation; multiwave mixing; GaAs; GaAs quantum wells; Ginzburgh-Landau mechanism; atomic like systems; coherent wave mixing; diffracted signal; excitons; femtosecond free polarization decay; instantaneous frequency dynamics; macroscopic coherence; semiconductor quantum wells; temporal profile; transient four wave mixing experiment; Coherence; Diffraction; Excitons; Four-wave mixing; Frequency; Gallium arsenide; Polarization; Signal resolution;
Conference_Titel :
Lasers and Electro-Optics Society Annual Meeting, 1993. LEOS '93 Conference Proceedings. IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
0-7803-1263-5
DOI :
10.1109/LEOS.1993.379442
