Efficient photosensitization and high optical gain in a novel quantum-dot-sensitized hybrid photorefractive nanocomposite at a telecommunications wavelength

Kaushik Roy Choudhury; Yudhisthira Sahoo; Seongjin Jang; Paras N. Prasad

doi:10.1002/adfm.200400396

Efficient photosensitization and high optical gain in a novel quantum-dot-sensitized hybrid photorefractive nanocomposite at a telecommunications wavelength

Kaushik Roy Choudhury
, Yudhisthira Sahoo
, Seongjin Jang
, Paras N. Prasad

Chemistry

SUNY Buffalo

Research output: Contribution to journal › Article › peer-review

47 Scopus citations

Abstract

A high-performance hybrid polymeric photorefractive nanocomposite operating at the telecommunications wavelength of 1.34 μm is presented. The photorefractive nanocomposite is sensitized with PbS nanocrystals synthesized via a hot colloidal route. Photoconductivity experiments confirm and quantify the photocharge-generation quantum efficiency of the nanocrystals. A pronounced two-beam coupling effect at the operation wavelength is observed, leading to very high optical gains. Temporal evolution of the photorefractive growth process is also studied.

Original language	English
Pages (from-to)	751-756
Number of pages	6
Journal	Advanced Functional Materials
Volume	15
Issue number	5
DOIs	https://doi.org/10.1002/adfm.200400396
State	Published - May 2005

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abstract = "A high-performance hybrid polymeric photorefractive nanocomposite operating at the telecommunications wavelength of 1.34 μm is presented. The photorefractive nanocomposite is sensitized with PbS nanocrystals synthesized via a hot colloidal route. Photoconductivity experiments confirm and quantify the photocharge-generation quantum efficiency of the nanocrystals. A pronounced two-beam coupling effect at the operation wavelength is observed, leading to very high optical gains. Temporal evolution of the photorefractive growth process is also studied.",

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AU - Jang, Seongjin

AU - Prasad, Paras N.

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AB - A high-performance hybrid polymeric photorefractive nanocomposite operating at the telecommunications wavelength of 1.34 μm is presented. The photorefractive nanocomposite is sensitized with PbS nanocrystals synthesized via a hot colloidal route. Photoconductivity experiments confirm and quantify the photocharge-generation quantum efficiency of the nanocrystals. A pronounced two-beam coupling effect at the operation wavelength is observed, leading to very high optical gains. Temporal evolution of the photorefractive growth process is also studied.

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Efficient photosensitization and high optical gain in a novel quantum-dot-sensitized hybrid photorefractive nanocomposite at a telecommunications wavelength

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