Observation of single- and two-photon luminescence on optically quenched wide-gap semiconductor crystals

A. S. M. Noor; M. Torizawa; A. Miyakawa; Y. Kawata

doi:10.1117/12.806589

12 January 2009 Observation of single- and two-photon luminescence on optically quenched wide-gap semiconductor crystals

A. S. M. Noor, M. Torizawa, A. Miyakawa, Y. Kawata

Author Affiliations +

Proceedings Volume 7133, Fifth International Symposium on Instrumentation Science and Technology; 71332O (2009) https://doi.org/10.1117/12.806589
Event: International Symposium on Instrumentation Science and Technology, 2008, Shenyang, China

Abstract

Simultaneous observation of quenched wide-gap semiconductor crystals has been observed using single- and two-photon luminescence. It is was found at the quenched area, single-photon excitation gives luminescence read-out compared to two-photon which no luminescence detected at the bandgap wavelength. This is due to transition of electron between the bandgap in the two-photon luminescence to occur have been demolished by the quenching which involved two-photon quenching process. Furthermore, side lobes that exist in the longer part of the luminescence spectrum are resulted by decreasing in the Stark effect which increased the transition energy. The dependency if excitation power with the observed from the crystal's luminescence is elaborated which confirmed the single- and two-photon luminescence methods.

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A. S. M. Noor, M. Torizawa, A. Miyakawa, and Y. Kawata "Observation of single- and two-photon luminescence on optically quenched wide-gap semiconductor crystals", Proc. SPIE 7133, Fifth International Symposium on Instrumentation Science and Technology, 71332O (12 January 2009); https://doi.org/10.1117/12.806589

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