Abstract

In this paper, we report analysis, design, and numerical modeling of mid-infrared supercontinuum generation across 2–15 μm molecular “fingerprint region” using a new design of triangular-core graded-index photonic crystal fiber (PCF) pumped with 50 fs laser pulses of peak power of 3.5 kW at 4.1 μm. Proposed PCF design offers the nonlinear coefficient as high as 1944 W⁻¹ · Km⁻¹ at pump wavelength. To the best of our knowledge, the supercontinuum in PCF with such broadband spectra has been reported first time. Proposed PCF design has potential applications in gas sensing, food quality control, and early cancer diagnostics.

© 2015 IEEE

Ultra broadband mid-IR supercontinuum generation in Ge_11.5As₂₄Se_64.5 based chalcogenide graded-index photonic crystal fiber: design and analysis

A. G. N. Chaitanya, Than Singh Saini, Ajeet Kumar, and Ravindra Kumar Sinha
Appl. Opt. 55(36) 10138-10145 (2016)

Mid-infrared supercontinuum generation in multimode As₂ Se₃ chalcogenide photonic crystal fiber

Ameni Ben Khalifa, Amine Ben Salem, and Rim Cherif
Appl. Opt. 56(15) 4319-4324 (2017)

Supercontinuum generation at 1.55 μm in As₂S₃ core photonic crystal fiber

Harshul Balani, Ghanshyam Singh, Manish Tiwari, Vijay Janyani, and Ashish Kumar Ghunawat
Appl. Opt. 57(13) 3524-3533 (2018)

Numerical investigation of an ultra-broadband coherent mid-infrared supercontinuum in a chalcogenide AsSe₂-As₂S₅ multimaterial photonic crystal fiber

Mbaye Diouf, Ahmadou Wague, and Mourad Zghal
J. Opt. Soc. Am. B 36(2) A8-A14 (2019)

Mid-infrared supercontinuum generation spanning 2.0 to 15.1  μm in a chalcogenide step-index fiber

Tonglei Cheng, Kenshiro Nagasaka, Tong Hoang Tuan, Xiaojie Xue, Morio Matsumoto, Hiroshige Tezuka, Takenobu Suzuki, and Yasutake Ohishi
Opt. Lett. 41(9) 2117-2120 (2016)