학술논문
Exciton-acoustic-phonon scattering in (Zn,Cd)Se/ZnSe quantum wells-the influence of quantum confinement
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Conference
Author
Source
Technical Digest. Summaries of Papers Presented at the International Quantum Electronics Conference. Conference Edition. 1998 Technical Digest Series, Vol.7 (IEEE Cat. No.98CH36236) Quantum electronics Quantum Electronics Conference, 1998. IQEC 98. Technical Digest. Summaries of papers presented at the International. :102-103 1998
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Abstract
Summary form only given.To study the influence of quantum confinement on exciton-acoustic-phonon scattering, we have grown seven (Zn,Cd)Se/ZnSe samples by MBE onto GaAs substrates. Exciton-resonant, femtosecond time-integrated four-wave mixing (TI-FWM) was carried out on each sample at five temperatures between 4 and 70 K and five excitation densities. Acquisition of this large data set of 175 TI-FWM delay scans is made possible by the use of fast-scan time-delay techniques. Exponential fits to the data, assuming a photon-echo configuration, yield measured values of /spl gamma/ (homogeneous exciton linewidth). Linear fits to these /spl gamma/ values at low temperature (