Amplified spontaneous emission in semiconductor-nanocrystal/ synthetic-opal composites: Optical-gain enhancement via a photonic crystal pseudogap

Garry R. Maskaly; Melissa A. Petruska; Jagjit Nanda; Ilya V. Bezel; Richard D. Schaller; Han Htoon; Jeffrey M. Pietryga; Victor I. Klimov

doi:10.1002/adma.200500875

Amplified spontaneous emission in semiconductor-nanocrystal/ synthetic-opal composites: Optical-gain enhancement via a photonic crystal pseudogap

Garry R. Maskaly^*, Melissa A. Petruska, Jagjit Nanda, Ilya V. Bezel, Richard D. Schaller, Han Htoon, Jeffrey M. Pietryga, Victor I. Klimov

^*Corresponding author for this work

Chemistry

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

73 Scopus citations

Abstract

The effects of the L-point gap on the nanocrystals (NC) spontaneous and stimulated emissions in a synthetic opal infiltrated with a CDSe sol-gel/NC composite were investigated. It was found that despite the low loading of active material, amplified spontaneous emission (ASE) was clearly evident in the infiltrated samples. The sol-gel/NC/PC samples exhibited a reduced ASE threshold ranging from 40 to over 60%, despite a significant decrease in NC volume loading. The results show that in all cases. the ASE lines shift toward the PC L-point gap edges.

Original language	English (US)
Pages (from-to)	343-347
Number of pages	5
Journal	Advanced Materials
Volume	18
Issue number	3
DOIs	https://doi.org/10.1002/adma.200500875
State	Published - Feb 3 2006

ASJC Scopus subject areas

Materials Science(all)

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title = "Amplified spontaneous emission in semiconductor-nanocrystal/ synthetic-opal composites: Optical-gain enhancement via a photonic crystal pseudogap",

abstract = "The effects of the L-point gap on the nanocrystals (NC) spontaneous and stimulated emissions in a synthetic opal infiltrated with a CDSe sol-gel/NC composite were investigated. It was found that despite the low loading of active material, amplified spontaneous emission (ASE) was clearly evident in the infiltrated samples. The sol-gel/NC/PC samples exhibited a reduced ASE threshold ranging from 40 to over 60%, despite a significant decrease in NC volume loading. The results show that in all cases. the ASE lines shift toward the PC L-point gap edges.",

author = "Maskaly, {Garry R.} and Petruska, {Melissa A.} and Jagjit Nanda and Bezel, {Ilya V.} and Schaller, {Richard D.} and Han Htoon and Pietryga, {Jeffrey M.} and Klimov, {Victor I.}",

year = "2006",

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T1 - Amplified spontaneous emission in semiconductor-nanocrystal/ synthetic-opal composites

T2 - Optical-gain enhancement via a photonic crystal pseudogap

AU - Maskaly, Garry R.

AU - Petruska, Melissa A.

AU - Nanda, Jagjit

AU - Bezel, Ilya V.

AU - Schaller, Richard D.

AU - Htoon, Han

AU - Pietryga, Jeffrey M.

AU - Klimov, Victor I.

PY - 2006/2/3

Y1 - 2006/2/3

N2 - The effects of the L-point gap on the nanocrystals (NC) spontaneous and stimulated emissions in a synthetic opal infiltrated with a CDSe sol-gel/NC composite were investigated. It was found that despite the low loading of active material, amplified spontaneous emission (ASE) was clearly evident in the infiltrated samples. The sol-gel/NC/PC samples exhibited a reduced ASE threshold ranging from 40 to over 60%, despite a significant decrease in NC volume loading. The results show that in all cases. the ASE lines shift toward the PC L-point gap edges.

AB - The effects of the L-point gap on the nanocrystals (NC) spontaneous and stimulated emissions in a synthetic opal infiltrated with a CDSe sol-gel/NC composite were investigated. It was found that despite the low loading of active material, amplified spontaneous emission (ASE) was clearly evident in the infiltrated samples. The sol-gel/NC/PC samples exhibited a reduced ASE threshold ranging from 40 to over 60%, despite a significant decrease in NC volume loading. The results show that in all cases. the ASE lines shift toward the PC L-point gap edges.

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Amplified spontaneous emission in semiconductor-nanocrystal/ synthetic-opal composites: Optical-gain enhancement via a photonic crystal pseudogap

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