Highly coherent mid-infrared supercontinuum generations in a strip titanium dioxide waveguide with three zero-dispersion wavelengths

Jinye Shen; Jinhui Yuan; Yujun ChengChao MeiJintao LaiXian ZhouQiang WuBinbin YanKuiru WangChongxiu YuXinzhu Sang

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Highly coherent mid-infrared supercontinuum generations in a strip titanium dioxide waveguide with three zero-dispersion wavelengths

机译：Highly coherent mid-infrared supercontinuum generations in a strip titanium dioxide waveguide with three zero-dispersion wavelengths

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摘要

A strip titanium dioxide (TiO_2) waveguide is designed for highly coherent mid-infrared (MIR) supercontinuum (SC) generation. For the designed TiO_2 waveguide, three zero-dispersion wavelengths (ZDWs) are obtained through adjusting the waveguide structure parameters. The three ZDWs are located at 1.53, 3.96 and 5.43 μm, respectively. The nonlinearity coefficient γ is calculated as 1.12 W~(-1) m~(-1) at wavelength 3.1 μm. By optimizing the pump pulse parameters, the highly coherent MIR SCs are generated when the hyperbolic secant pump pulse with a duration of 80 fs, peak power of 1 kW, and wavelength of 3.1 μm is launched into the TiO_2 waveguide and propagated 4.2-mm in length. The obtained SC covers a wavelength range from 1.71 to 9.90 μm (more than 2.5 octaves). Our research results can find important applications in MIR photonics and spectroscopy, biophotonics, optical precision measurement, etc.

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来源
《Optical Engineering》 |2022年第11期|117104-1-117104-12|共12页
作者
Jinye Shen; Jinhui Yuan; Yujun ChengChao MeiJintao LaiXian ZhouQiang WuBinbin YanKuiru WangChongxiu YuXinzhu Sang;
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作者单位

Beijing Univ. of Posts and Telecommunications (China);

Univ. of Science and Technology Beijing (China);

Northumbria Univ. (United Kingdom);

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类计量学;
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Highly coherent mid-infrared supercontinuum generations in a strip titanium dioxide waveguide with three zero-dispersion wavelengths

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