Strongly Nonlinear Optical Glass Fibers from Noncentrosymmetric Phase-Change Chalcogenide Materials

Journal Article · Fri Aug 27 04:00:00 EDT 2010 · J. Am. Chem. Soc.

DOI:https://doi.org/10.1021/ja908839s· OSTI ID:1002606

Chung, In; Jang, Joon I; Malliakas, Christos D; Ketterson, John B; Kanatzidis, Mercouri G ^[1]

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1. NWU

We report that the one-dimensional polar selenophosphate compounds APSe{sub 6} (A = K, Rb), which show crystal-glass phase-change behavior, exhibit strong second harmonic generation (SHG) response in both crystal and glassy forms. The crystalline materials are type-I phase-matchable with SHG coefficients {chi}{sup (2)} of 151.3 and 149.4 pm V{sup -1} for K{sup +} and Rb{sup +} salts, respectively, which is the highest among phase-matchable nonlinear optical (NLO) materials with band gaps over 1.0 eV. The glass of APSe{sub 6} exhibits comparable SHG intensities to the top infrared NLO material AgGaSe{sub 2} without any poling treatments. APSe{sub 6} exhibit excellent mid-IR transparency. We demonstrate that starting from noncentrosymmetric phase-change materials such as APSe{sub 6} (A = K, Rb), we can obtain optical glass fibers with strong, intrinsic, and temporally stable second-order nonlinear optical (NLO) response. The as-prepared glass fibers exhibit SHG and difference frequency generation (DFG) responses over a wide range of wavelengths. Raman spectroscopy and pair distribution function (PDF) analyses provide further understanding of the local structure in amorphous state of KPSe{sub 6} bulk glass and glass fiber. We propose that this approach can be widely applied to prepare permanent NLO glass from materials that undergo a phase-change process.

• Research Organization: Advanced Photon Source (APS), Argonne National Laboratory (ANL), Argonne, IL (US)
• Sponsoring Organization: USDOE
• OSTI ID: 1002606
• Journal Information: J. Am. Chem. Soc., Journal Name: J. Am. Chem. Soc. Journal Issue: (1) ; 01, 2010 Vol. 132; ISSN JACSAT; ISSN 0002-7863
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

36 MATERIALS SCIENCE
FIBERGLASS
MORPHOLOGY
OPTICAL FIBERS
PHASE CHANGE MATERIALS
POTASSIUM PHOSPHATES
POTASSIUM SELENIDES
RAMAN SPECTROSCOPY
RUBIDIUM PHOSPHATES
RUBIDIUM SELENIDES