Accession Number:

ADP007876

Title:

Investigation of Carrier Transport in Photorefractive Superlattices by Time-Correlated Photon Counting,

Personal Author(s):

Corporate Author:

AT AND T BELL LABS MURRAY HILL NJ

Report Date:

1992-05-22

Abstract:

Recently a new class of photorefractive structures has been demonstrated. These devices rely on the spatial separation of photogenerated electrons and holes to produce a large refractive index modulation via the electro-optic effect and might have potential for all optical switching applications. One of these devices consists of an asymmetric 6-doped superlattice which is optically excited by a picosecond laser source. The resulting space charge field produced by charge separation creates a refractive index change of 3.8xl0-4 at a pump energy density of 40 fJum2. In this paper we report the first time-resolved studies of the carrier relaxation in these structures. The measurements were performed by a Time Correlated Photon Counting TCPC technique.

Supplementary Note:

This article is from 'Organization of the Optical Society of America Photonic Science Topical Meeting Series. Volume 7. Quantum Optoelectronics Held in Salt Lake City, Utah on 11-13 March 1991,' AD-A253 823, p247-250.

Pages:

0004

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0.00MB

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