Realization of an InSb bistable device as an optical and gate and its use to measure carrier recombination times

C. T. Seaton, S. D. Smith, F. A P Tooley, M. E. Prise, M. R. Taghizadeh

Research output: Contribution to journalArticle

Abstract

We report the novel operation of a natural reflectivity InSb bistable resonator at 77 K, pumped with a cw CO laser at 1819 cm-1, as a single pulse detector with definite threshold energy and as an optical AND gate. The two switching pulses for the AND gate logic operation are 30-ps single, switched-out pulses from a mode-locked neodymium: yttrium aluminum garnet (Nd:YAG) laser. Introduction of a variable time delay between the logic pulses provides a unique technique for measurement of the photogenerated carrier lifetime and yields a recombination time ~90 ns for a cw CO holding intensity ~80 W/cm2.

Original languageEnglish
Pages (from-to)131-133
Number of pages3
JournalApplied Physics Letters
Volume42
Issue number2
DOIs
Publication statusPublished - 1983

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