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 |
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Pages (from-to) | 1316-1318 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 38 |
Issue number | 8 |
DOIs | |
Publication status | Published - Apr 15 2013 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics