Accession Number:

ADP007819

Title:

Room Temperature Exciton Absorption, Excitonic Nonlinearities, and Exciton-Phonon Interaction in (Zn,Cd)Se/ZnSe Quantum Wells,

Descriptive Note:

Corporate Author:

BROWN UNIV PROVIDENCE RI

Personal Author(s):

• Pelekanos, N.
• Ding, J.
• Nurmikko, A. V.

Report Date:

1992-05-22

Pagination or Media Count:

8.0

Abstract:

Wide-bandgap II-VI compound semiconductor heterostructures are presently being researched for their potential optoelectronic applications at short visible wavelengths, especially in the blue region of the spectrum. In terms of prospective modulator use, a particular difficulty has been the absence so far of the distinct exciton resonances which have been widely exploited e.g. for electro-absorptive purposes in III-V semiconductor quantum wells. In case of ZnSe and related alloys, the problem is fundamental due to the very large exciton-LO phonon coupling the Frohlich interaction strength for bulk ZnSe is six to eight times larger than that for GaAs.

Descriptors:

• *ELECTROOPTICS
• *LIGHT MODULATORS
• ALLOYS
• BLUE(COLOR)
• COUPLINGS
• EXCITONS
• INTERACTIONS
• PHONONS
• REGIONS
• SEMICONDUCTORS
• GROUP II VI COMPOUNDS
• ZINC SELENIDES
• QUANTUM ELECTRONICS

Subject Categories:

• Electrooptical and Optoelectronic Devices

Distribution Statement:

APPROVED FOR PUBLIC RELEASE