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Conferences > IQEC > 1996 > FO > FO1
  • International Quantum Electronics Conference
  • 1996 OSA Technical Digest Series (Optica Publishing Group, 1996),
  • paper FO1

Second order nonlinear optical spectroscopy of midgap states at the metal/GaAs interface

J Qi, WE Angerer, MS Yeganeh, AG Yodh, and WM Theis

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Abstract

Interface states at metal/semiconductor junctions have received intense interest because of their perceived role in affecting device properties. Nonlinear optical spectroscopy is well suited for studying these buried interfaces as a result of its inherent interface sensitivity and long penetration depth [1]. Here we report observations of midgap interface states at the metal/GaAs [001] interface by second harmonic generation (SHG) and sum frequency generation (SFG).

© 1996 Optical Society of America

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