Title :
Picosecond all-optical modulation in CdTe/CdZnTe multi-quantum wells under an applied electric field
Author :
Grac, R. ; Pugnet, M. ; Magnea, N. ; Pautrat, J.L.
Author_Institution :
CNRS, Toulouse, France
fDate :
29 Apr-3 May 1996
Abstract :
We present single shot transmission experiments with 20 ps laser pulses. When a 105 V/cm static electric field is applied on a CdTe/Cd0.62Zn0.38Te multiple quantum well, the optical transmission increases. At a 804 nm wavelength the enhancement factor is equal to 1.6. For a pulse intensity higher than 0.7 fJ μm -2, screening of the applied electric field occurs, restoring a zero-field transmission. These experiments imply that the screening rise time is shorter than 10 ps which results from weak confinement of the holes within the quantum wells
Keywords :
II-VI semiconductors; cadmium compounds; electro-optical effects; electro-optical modulation; high-speed optical techniques; light transmission; nonlinear optics; semiconductor quantum wells; zinc compounds; 20 ps; 804 nm; CdTe-CdZnTe; CdTe/CdZnTe multi-quantum wells; applied electric field; enhancement factor; holes weak confinement; optical transmission; picosecond all-optical modulation; screening rise time; single shot transmission experiments; static electric field; zero-field transmission; Intensity modulation; Nonlinear optics; Optical buffering; Optical modulation; Optical pumping; Optical refraction; Optical variables control; Probes; Pulse modulation; Ultrafast optics;
Conference_Titel :
Semiconducting and Semi-Insulating Materials Conference, 1996. IEEE
Conference_Location :
Toulouse
Print_ISBN :
0-7803-3179-6
DOI :
10.1109/SIM.1996.570916
