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Title: Effect of Coulomb enhancement on optical gain in (Zn,Cd)Se/ZnSe multiple quantum wells
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Keywords: Physics
Issue Date: 1997
Publisher: American Physical Society
Citation: F. P. Logue, P. Rees, J. F. Heffernan, C. Jordan, J. F. Donegan, and J. Hegarty and F. Hiei and A. Ishibashi , Effect of Coulomb enhancement on optical gain in (Zn,Cd)Se/ZnSe multiple quantum wells, Physical Review B, 54, 23, 1997, 16417, 16420
Series/Report no.: Physical Review B
Abstract: The optical-gain spectra of a 40-Å (Zn,Cd)Se/ZnSe multiple quantum well has been measured at various temperatures using a variable-stripe method. By comparison with a gain calculation including many-body effects, we have shown that gain in this structure arises from an electron-hole plasma (EHP) for temperatures higher than 140 K. Excellent agreement between experiment and theory allows us to demonstrate the significance of many-body effects such as carrier dephasing and Coulomb enhancement. The breakdown of the EHP model below 140 K indicates an increasing excitonic contribution.
Description: PUBLISHED
Appears in Collections:Physics (Scholarly Publications)

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