Ultraviolet stimulated emission and optical gain spectra in CdxZn1−xS-ZnS strained-layer superlattices | Zendy

Yoichi Yamada | Zendy; Yasuaki Masumoto | Zendy; J.T. Mullins | Zendy; Tsunemasa Taguchi | Zendy

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Ultraviolet stimulated emission and optical gain spectra in CdxZn1−xS-ZnS strained-layer superlattices

Author(s) -

Yoichi Yamada,

Yasuaki Masumoto,

J.T. Mullins,

Tsunemasa Taguchi

Publication year - 1992

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.108291

Subject(s) - exciton , superlattice , stimulated emission , nanosecond , ultraviolet , materials science , absorption (acoustics) , optical pumping , emission spectrum , absorption spectroscopy , layer (electronics) , spectral line , optoelectronics , photoluminescence , optics , laser , condensed matter physics , physics , nanotechnology , astronomy , composite material

Stimulated emission at 374.9 nm has been observed in an optically pumped Cd,,zzZnO,,sS-ZnSstrained-layer superlattice at room temperature. Using a pump-and-probe technique withnanosecond excitation pulses, optical gain has also been observed at the tail part of the n= 1heavy-hole exciton absorption spectrum in the presence of the clear absorption peak of theexciton. Our experimental results suggest that the stimulated emission originates from excitonicgai

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