Terahertz-induced Kerr effect in amorphous chalcogenide glasses

We have investigated the terahertz-induced third-order (Kerr) nonlinear optical properties of the amorphous chalcogenide glasses As2S3 and As2Se3. Chalcogenide glasses are known for their high optical Kerr nonlinearities which can be several hundred times greater than those of fused silica. We use h...

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Bibliographic Details
Published in:Applied physics letters 2013-11, Vol.103 (22)
Main Authors: Zalkovskij, M, Strikwerda, A C, Iwaszczuk, K, Popescu, A, Savastru, D, Malureanu, R, Lavrinenko, A V, Jepsen, PU
Format: Article
Language:English
Subjects:
Applied physics
Arsenic triselenide
Arsenic trisulfide
Arsenides
Chalcogenides
Field strength
Fused silica
Glass
Nonlinearity
Optical properties
Refractivity
Sampling
Selenides
Silicon dioxide
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Summary:We have investigated the terahertz-induced third-order (Kerr) nonlinear optical properties of the amorphous chalcogenide glasses As2S3 and As2Se3. Chalcogenide glasses are known for their high optical Kerr nonlinearities which can be several hundred times greater than those of fused silica. We use high-intensity, single-cycle terahertz pulses with a maximum electrical field strength exceeding 400 kV/cm and frequency content from 0.2 to 3.0 THz. By optical Kerr-gate sampling, we measured the terahertz-induced nonlinear refractive indices at 800 nm to be n2=1.746×10−14cm2/W for As2S3 and n2=3.440×10−14 cm2/W for As2Se3.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4832825