Title :
Sum frequency generation by intersubband transition in step quantum wells
Author :
Liu, H.C. ; Costard, E. ; Rosencher, E. ; Nagle, J.
Author_Institution :
Lab. Central de Recherches, Thomson-CSF, Orsay, France
fDate :
9/1/1995 12:00:00 AM
Abstract :
Using two CO2 lasers, sum frequency generation was achieved in step quantum wells via intersubband transition processes. The power from each continuous wave (CW) CO2 lasers was kept low such that the total power onto the sample was below 2 W. The observed sum frequency signal obeyed the polarization selection rule predicted by the simple effective mass envelope function model. The experimentally determined and calculated second order susceptibility values are in reasonable agreement
Keywords :
III-V semiconductors; aluminium compounds; gallium arsenide; nonlinear optical susceptibility; optical frequency conversion; semiconductor quantum wells; 2 W; AlGaAs-GaAs; CO2; CO2 lasers; continuous wave lasers; effective mass envelope function model; intersubband transition; polarization selection rule; second order susceptibility values; step quantum wells; sum frequency generation; sum frequency signal; total power; Effective mass; Electrons; Frequency; Gallium arsenide; Laser beams; Laser modes; Laser transitions; Laser tuning; Power lasers; Quantum well lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
