Second-harmonic generation from CuInSe2 thin films: Influence of the substrate-epilayer lattice mismatch

D. J. Bottomley; A. Mito; P. J. Fons; S. Niki; A. Yamada

doi:10.1109/3.605550

Second-harmonic generation from CuInSe₂ thin films: Influence of the substrate-epilayer lattice mismatch

D. J. Bottomley, A. Mito, P. J. Fons, S. Niki, A. Yamada

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

10 Citations (Scopus)

Abstract

We investigate the second-order nonlinear optical (NLO) properties of tetragonal chalcopyrite-structure CuInSe₂ thin films using optical second-harmonic generation at a fundamental wavelength of 790 nm. An approximate doubling of the second-order optical nonlinearity of the CuInSe₂ thin films is achieved through changing the substrate from GaAs(001) to In_0.29Ga_0.71As(001), thereby reducing the lattice mismatch from 2.2% to 0.2%. This observation suggests that minimizing the lattice mismatch is a key requirement for the growth of high-quality NLO active chalcopyrite structure thin films and is in contrast to some other NLO active thin-film systems.

Original language	English
Pages (from-to)	1294-1298
Number of pages	5
Journal	IEEE Journal of Quantum Electronics
Volume	33
Issue number	8
DOIs	https://doi.org/10.1109/3.605550
Publication status	Published - 1997 Aug 1
Externally published	Yes

Keywords

Birefringence
Nonlinear optics
Phase matching
Semiconductor defects
Semiconductor materials
Semiconductor waveguides
Thin films
X-ray measurements

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Electrical and Electronic Engineering

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Cite this

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title = "Second-harmonic generation from CuInSe2 thin films: Influence of the substrate-epilayer lattice mismatch",

abstract = "We investigate the second-order nonlinear optical (NLO) properties of tetragonal chalcopyrite-structure CuInSe2 thin films using optical second-harmonic generation at a fundamental wavelength of 790 nm. An approximate doubling of the second-order optical nonlinearity of the CuInSe2 thin films is achieved through changing the substrate from GaAs(001) to In0.29Ga0.71As(001), thereby reducing the lattice mismatch from 2.2% to 0.2%. This observation suggests that minimizing the lattice mismatch is a key requirement for the growth of high-quality NLO active chalcopyrite structure thin films and is in contrast to some other NLO active thin-film systems.",

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AU - Mito, A.

AU - Fons, P. J.

AU - Niki, S.

AU - Yamada, A.

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N2 - We investigate the second-order nonlinear optical (NLO) properties of tetragonal chalcopyrite-structure CuInSe2 thin films using optical second-harmonic generation at a fundamental wavelength of 790 nm. An approximate doubling of the second-order optical nonlinearity of the CuInSe2 thin films is achieved through changing the substrate from GaAs(001) to In0.29Ga0.71As(001), thereby reducing the lattice mismatch from 2.2% to 0.2%. This observation suggests that minimizing the lattice mismatch is a key requirement for the growth of high-quality NLO active chalcopyrite structure thin films and is in contrast to some other NLO active thin-film systems.

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