Determination of the complex refractive index of individual quantum wells from distributed reflectance

Robert K. Hickernell, David H. Christensen, Joseph G. Pellegrino, Jin Wang, Jean Pierre Leburton

Research output: Contribution to journalArticlepeer-review

Abstract

We investigate the measurement of the complex refractive index of individual quantum wells by reflectance spectroscopy. Placing the wells at half-wavelength spacing to cause resonant feedback produces an order-of-magnitude increase in measurement sensitivity over that of nonresonant structures. Quantum well dispersive and absorptive effects on reflectance can be differentiated in certain spectral regions. Experimental data confirm a theoretical model of refractive index and absorption for quantum wells of GaAs in Al0.2Ga0.8As in the region of the well band gap.

Original languageEnglish (US)
Pages (from-to)3056-3059
Number of pages4
JournalJournal of Applied Physics
Volume75
Issue number6
DOIs
StatePublished - Dec 1 1994

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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