Excitonic electroabsorption mapping spectroscopy

M. RAMASWAMY; W. H. KNOX; T. SIZER; B. TELL; J. E. HENRY; G. E. DORAN

International Quantum Electronics Conference
OSA Technical Digest (Optica Publishing Group, 1990),
paper QTUH24

Excitonic electroabsorption mapping spectroscopy

M. RAMASWAMY, W. H. KNOX, T. SIZER, B. TELL, J. E. HENRY, and G. E. DORAN

International Quantum Electronics Conference 1990

Anaheim, California United States
21–25 May 1990
ISBN: 1-55752-145-X

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Poster Session: 1 (QTUH)

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M. RAMASWAMY, W. H. KNOX, T. SIZER, B. TELL, J. E. HENRY, and G. E. DORAN, "Excitonic electroabsorption mapping spectroscopy," in International Quantum Electronics Conference, A. Owyoung, C. Shank, S. Chu, and E. Ippen, eds., Vol. 8 of OSA Technical Digest (Optica Publishing Group, 1990), paper QTUH24.

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Abstract

Excitonic electroabsorption is a well documented¹ phenomenon that is the basis of quantum well optical modulators. In such multiple quantum well structures (MQWs) it is of interest to determine the spatial uniformity of electroabsorption. The construction of a quantum well modulator (QWM) with uniform modulation is complicated by difficulties in forming ohmic contacts to semiconductor material. Excitonic electroabsorption mapping spectroscopy is a new method for determining with a single experiment the spatial distribution of the electroabsorption throughout a QWM for given conditions of incident wavelength and applied bias voltage.

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