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Excite-probe FEL (CLIO) study of two-photon-induced carrier dynamics in narrow gap semiconductors

  • B. N. Murdin
  • , R. Rangel-Rojo
  • , C. R. Pidgeon
  • , M. F. Kimmitt
  • , A. K. Kar
  • , D. A. Jaroszynski
  • , J. M. Ortega
  • , R. Prazeres
  • , F. Glotin
  • , D. C. Hutchings

Research output: Contribution to journalArticlepeer-review

Abstract

In a previous paper measurements were reported of two-photon absorption (TPA) in the narrow gap semiconductors InAs and InSb utilising the mid-infrared tunability of CLIO. An assumption had to be made concerning the lifetime of the excited carriers in order to interpret the results. We have now made a direct measurement of the lifetime of two-photon-induced free holes in InAs and InSb using an excite-probe technique. We have measured the TPA coefficient over the entire range from one-photon to two-photon threshold, showing good agreement with a non-parabolic band model for the process. © 1994.

Original languageEnglish
Pages (from-to)165-168
Number of pages4
JournalNuclear Inst. and Methods in Physics Research, A
Volume341
Issue number1-3
Publication statusPublished - 1 Mar 1994

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