Quantum Optoelectronics

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TIME-RESOLVED STUDIES OF HOT CARRIERS AND EXCITONS IN MBE-GROWN ZNTE GASB EPILAYERS

SEMICOND SCI TECH 9:5 (1994) 759-761

Authors:

MJ MCNAMEE, RA TAYLOR, PA SNOW, W HAYES, DE ASHENFORD, B LUNN
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TIME-RESOLVED AND CW OPTICAL STUDIES OF MBE-GROWN ZNTE/GASB EPILAYERS

J LUMIN 60-1 (1994) 788-791

Authors:

MJ MCNAMEE, RA TAYLOR, PA SNOW, W HAYES, DE ASHENFORD, B LUNN
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TIME-RESOLVED PHOTOLUMINESCENCE STUDIES OF STIMULATED-EMISSION AND EXCITON DYNAMICS IN ZNSE/ZNS0.18SE0.82 SUPERLATTICES

SOLID STATE ELECTRON 37:4-6 (1994) 1133-1136

Authors:

CJ STEVENS, RA TAYLOR, JF RYAN, M DABBICCO, M FERRARA, R CINGOLANI, Y KURODA, I SUEMUNE
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Excitonic processes and lasing in znsse/znse superlattices

Superlattices and Microstructures 16:4 (1994) 371-377

Authors:

CJ Stevens, R Cingolani, L Calcagnile, M Dabbicco, RA Taylor, JF Ryan, M Lomascolo, I Suemune

Abstract:

We report the results of a systematic investigation of the stimulated emission in ZnSSe/ZnSe superlattices, by time resolved luminescence and high excitation intensity magnetoluminescence. The stimulated emission is found to have excitation origin from localized states around the threshold, and free-carrier origin at carrier densities well above the phase space filling threshold of the exciton. © 1994 Academic Press Limited.
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Picosecond photoluminescence intensity correlation measurements of hot carriers in GaAs/AlxGa1-xAs quantum wells

Journal of Luminescence 59:5 (1994) 303-313

Authors:

AM de Paula, JF Ryan, HJW Eakin, M Tatham, RA Taylor, AJ Turberfield

Abstract:

We have measured the energy relaxation of hot carriers in doped and undoped GaAs/AlxGa1-xAs quantum wells by detecting time-resolved hot luminescence using a two-pulse intensity correlation technique. The results are compared with time-dependent intensity correlation functions calculated using a model of energy relaxation by optical phonon interactions which includes non-equilibrium phonon effects. The excellent agreement between calculated and experimental correlation functions shows the great potential of this method in measuring ultrafast relaxation processes. © 1994.
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