Coherent octave-spanning mid-infrared supercontinuum generated in As2S3-silica double-nanospike waveguide pumped by femtosecond Cr:ZnS laser

Shangran Xie; Nikolai Tolstik; John C. Travers; Evgeni Sorokin; Celine Caillaud; Johann Troles; Philip St J. Russell; Irina T. Sorokina

doi:10.1364/OE.24.012406

Coherent octave-spanning mid-infrared supercontinuum generated in As₂S₃-silica double-nanospike waveguide pumped by femtosecond Cr:ZnS laser

Shangran Xie, Nikolai Tolstik, John C. Travers, Evgeni Sorokin, Celine Caillaud, Johann Troles, Philip St J. Russell, Irina T. Sorokina

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

40 Citations (Scopus)

Abstract

A more than 1.5 octave-spanning mid-infrared supercontinuum (1.2 to 3.6 μm) is generated by pumping a As₂S₃-silica "double-nanospike" waveguide via a femtosecond Cr:ZnS laser at 2.35 μm. The combination of the optimized group velocity dispersion and extremely high nonlinearity provided by the As₂S₃-silica hybrid waveguide enables a ∼100 pJ level pump pulse energy threshold for octave-spanning spectral broadening at a repetition rate of 90 MHz. Numerical simulations show that the generated supercontinuum is highly coherent over the entire spanning wavelength range. The results are important for realization of a high repetition rate octave-spanning frequency comb in the mid-infrared spectral region.

Original language	English
Pages (from-to)	12406-12413
Number of pages	8
Journal	Optics Express
Volume	24
Issue number	11
DOIs	https://doi.org/10.1364/OE.24.012406
Publication status	Published - 30 May 2016
Externally published	Yes

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title = "Coherent octave-spanning mid-infrared supercontinuum generated in As2S3-silica double-nanospike waveguide pumped by femtosecond Cr:ZnS laser",

abstract = "A more than 1.5 octave-spanning mid-infrared supercontinuum (1.2 to 3.6 μm) is generated by pumping a As2S3-silica {"}double-nanospike{"} waveguide via a femtosecond Cr:ZnS laser at 2.35 μm. The combination of the optimized group velocity dispersion and extremely high nonlinearity provided by the As2S3-silica hybrid waveguide enables a ∼100 pJ level pump pulse energy threshold for octave-spanning spectral broadening at a repetition rate of 90 MHz. Numerical simulations show that the generated supercontinuum is highly coherent over the entire spanning wavelength range. The results are important for realization of a high repetition rate octave-spanning frequency comb in the mid-infrared spectral region.",

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AU - Xie, Shangran

AU - Tolstik, Nikolai

AU - Travers, John C.

AU - Sorokin, Evgeni

AU - Caillaud, Celine

AU - Troles, Johann

AU - Russell, Philip St J.

AU - Sorokina, Irina T.

PY - 2016/5/30

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N2 - A more than 1.5 octave-spanning mid-infrared supercontinuum (1.2 to 3.6 μm) is generated by pumping a As2S3-silica "double-nanospike" waveguide via a femtosecond Cr:ZnS laser at 2.35 μm. The combination of the optimized group velocity dispersion and extremely high nonlinearity provided by the As2S3-silica hybrid waveguide enables a ∼100 pJ level pump pulse energy threshold for octave-spanning spectral broadening at a repetition rate of 90 MHz. Numerical simulations show that the generated supercontinuum is highly coherent over the entire spanning wavelength range. The results are important for realization of a high repetition rate octave-spanning frequency comb in the mid-infrared spectral region.

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Coherent octave-spanning mid-infrared supercontinuum generated in As₂S₃-silica double-nanospike waveguide pumped by femtosecond Cr:ZnS laser

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