Large optical nonlinearities in a GaAs/AlGaAs hetero n-i-p-i structure

A. Kost, E. Garmire, A. Danner, P. D. Dapkus

Research output: Contribution to journalArticlepeer-review

66 Scopus citations


Light-induced changes in the absorption of a multiple quantum well hetero n-i-p-i structure at room temperature have been measured using a pump-probe method. Changes in the absorption coefficient in the quantum wells of more than 2000 cm-1 have been observed with pump intensities as small as 375 mW/cm2. Corresponding changes in the index of refraction of ≈0.02 have been calculated.

Original languageEnglish (US)
Pages (from-to)637-639
Number of pages3
JournalApplied Physics Letters
Issue number8
StatePublished - 1988
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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