TIME-RESOLVED PHOTOLUMINESCENCE MICROSCOPY OF GAINAS GAINASP QUANTUM-WELLS INTERMIXED USING A PULSED-LASER TECHNIQUE/

High spatial resolution time-resolved photoluminescence has been used to study GaInAs/GaInAsP quantum-well structures selectively intermixed using the pulsed photoabsorption-induced disordering technique. Photo luminescence decay measurements at wavelengths >1.3 mu m were obtained using novel high-efficiency photon-counting detectors and were found to correlate spatially with the observed luminescence blue shift in th ese structures. Results indicate a reduction in the nonradiative recom bination time of nearly two orders of magnitude as a result of this in termixing technique. (C) 1996 American Institute of Physics.