Title :
Photo-modulated photoluminescence in III-V semiconductor quantum wells
Author :
Baars, T. ; Chtanov, A. ; Gal, M.
Author_Institution :
Sch. of Phys., New South Wales Univ., Sydney, NSW, Australia
Abstract :
We have developed a new technique of modulated photoluminescence (PL) spectroscopy. We show that the signal detected at twice the modulation frequency of the exciting light contains information about the non-linear processes similar to photo-modulated PL experiments. We attribute this non-linear PL signal to the optical modulation of the internal electric field of the quantum well (QW) samples. The method allows the separation of overlapping PL emission lines and provides the emission parameters of the separated lines, even when the PL spectrum itself appears to be featureless
Keywords :
III-V semiconductors; optical modulation; photoluminescence; semiconductor quantum wells; III-V semiconductor quantum well; internal electric field; nonlinear signal; optical modulation; photo-modulated photoluminescence; Frequency measurement; Frequency modulation; III-V semiconductor materials; Intensity modulation; Luminescence; Nonlinear optics; Optical modulation; Photoluminescence; Signal detection; Spectroscopy;
Conference_Titel :
Optoelectronic and Microelectronic Materials And Devices Proceedings, 1996 Conference on
Conference_Location :
Canberra, ACT
Print_ISBN :
0-7803-3374-8
DOI :
10.1109/COMMAD.1996.610130
