Octave-spanning high-repetition-rate mid-IR supercontinuum for frequency comb synthesis

Yuchen Wang; Yuchen Wang; Stanislav. O. Leonov; Vladimir S. Shiryaev; Gennady E. Snopatin; Boris S. Stepanov; Victor G. Plotnichenko; Valeriy E. Karasik; Edoardo Vicentini; Edoardo Vicentini; Alessio Gambetta; Alessio Gambetta; Nicola Coluccelli; Nicola Coluccelli; Cesare Svelto; Paolo Laporta; Paolo Laporta; Gianluca Galzerano; Gianluca Galzerano

2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference
OSA Technical Digest (Optica Publishing Group, 2019),
paper cf_p_19

Octave-spanning high-repetition-rate mid-IR supercontinuum for frequency comb synthesis

Yuchen Wang, Stanislav. O. Leonov, Vladimir S. Shiryaev, Gennady E. Snopatin, Boris S. Stepanov, Victor G. Plotnichenko, Valeriy E. Karasik, Edoardo Vicentini, Alessio Gambetta, Nicola Coluccelli, Cesare Svelto, Paolo Laporta, and Gianluca Galzerano

The European Conference on Lasers and Electro-Optics 2019

Munich Germany
23–27 June 2019
ISBN: 978-1-7281-0469-0

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Y. Wang, S. O. Leonov, V. S. Shiryaev, G. E. Snopatin, B. S. Stepanov, V. G. Plotnichenko, V. E. Karasik, E. Vicentini, A. Gambetta, N. Coluccelli, C. Svelto, P. Laporta, and G. Galzerano, "Octave-spanning high-repetition-rate mid-IR supercontinuum for frequency comb synthesis," in 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, OSA Technical Digest (Optica Publishing Group, 2019), paper cf_p_19.

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Abstract

Research efforts devoted to supercontinuum (SC) light sources in a fiber-format spanning the mid-infrared (mid-IR) molecular fingerprint region is currently undergoing a dramatic increase, particularly enforced by such demanding applications as biomolecular and environmental sensing. Among various glass compositions, chalcogenides have the highest non-linearity and the broadest transparency range extending further into the mid-IR where fluoride and tellurite glasses are no longer transparent [1]. Here we demonstrate SC generation in tapered suspended-core As₂Se₃ photonics crystal fibers pumped by a Cr²⁺:ZnSe ultrafast laser with a pulse duration of 35 fs, a repetition frequency of 170 MHz and an average power of 180 mW (30 kW peak power and 1 nJ pulse energy) at 2.4 μm, based on an improved design of that reported in Ref. [2]. The generated SC covers the spectral region from 1.4 to 4.2 μm.

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