K4GeP4Se12: A case for phase-change nonlinear optical chalcogenide

J. I. Jang; S. Park; C. M. Harrison; D. J. Clark; C. D. Morris; I. Chung; M. G. Kanatzidis

doi:10.1364/OL.38.001316

K₄GeP₄Se₁₂: A case for phase-change nonlinear optical chalcogenide

J. I. Jang, S. Park, C. M. Harrison, D. J. Clark, C. D. Morris, I. Chung, M. G. Kanatzidis

Northwestern University

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

16 Citations (Scopus)

Abstract

We report on broadband nonlinear optical (NLO) responses from a phase-change chalcogenide compound K₄GeP₄Se₁₂. Its glassy phase exhibits unusual second-harmonic generation (SHG) due to the preservation of local crystallographic order. The SHG efficiency of the glassy form can be boosted by more than 2 orders of magnitude by simple heat treatment. Strong SHG and third-harmonic generation from both glassy and crystalline compounds were characterized over a wide wavelength range of 1.2-4.0 μm. Our results imply that K₄GeP₄Se₁₂ can be utilized for various NLO applications in the mid-infrared spectrum.

Original language	English
Pages (from-to)	1316-1318
Number of pages	3
Journal	Optics Letters
Volume	38
Issue number	8
DOIs	https://doi.org/10.1364/OL.38.001316
Publication status	Published - Apr 15 2013

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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title = "K4GeP4Se12: A case for phase-change nonlinear optical chalcogenide",

abstract = "We report on broadband nonlinear optical (NLO) responses from a phase-change chalcogenide compound K4GeP4Se12. Its glassy phase exhibits unusual second-harmonic generation (SHG) due to the preservation of local crystallographic order. The SHG efficiency of the glassy form can be boosted by more than 2 orders of magnitude by simple heat treatment. Strong SHG and third-harmonic generation from both glassy and crystalline compounds were characterized over a wide wavelength range of 1.2-4.0 μm. Our results imply that K4GeP4Se12 can be utilized for various NLO applications in the mid-infrared spectrum.",

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AU - Jang, J. I.

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AU - Harrison, C. M.

AU - Clark, D. J.

AU - Morris, C. D.

AU - Chung, I.

AU - Kanatzidis, M. G.

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