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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 8 — Apr. 15, 2013
  • pp: 1316–1318

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, and M. G. Kanatzidis  »View Author Affiliations

Optics Letters, Vol. 38, Issue 8, pp. 1316-1318 (2013)

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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 1.24.0μm. Our results imply that K4GeP4Se12 can be utilized for various NLO applications in the mid-infrared spectrum.

© 2013 Optical Society of America

OCIS Codes
(160.2750) Materials : Glass and other amorphous materials
(160.4330) Materials : Nonlinear optical materials
(190.2620) Nonlinear optics : Harmonic generation and mixing

ToC Category:
Nonlinear Optics

Original Manuscript: January 22, 2013
Manuscript Accepted: March 13, 2013
Published: April 10, 2013

J. I. Jang, S. Park, C. M. Harrison, D. J. Clark, C. D. Morris, I. Chung, and M. G. Kanatzidis, "K4GeP4Se12: a case for phase-change nonlinear optical chalcogenide," Opt. Lett. 38, 1316-1318 (2013)

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