Paper
30 January 2014 Generation of THz radiation based on Raman effect in photonic crystal fiber
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Abstract
We propose a method of generation terahertz radiation based on difference frequency mixing of colliding femtosecond pulses in the wavelength range 1550 nm. Obtaining a defined frequency difference is due to stimulated Raman soliton generation via splitting of multisoliton replica pulses in a photonic-crystal fiber. Pulse train is generated by a single laser. The results of numerical simulation of such process, based on the solution of the modified nonlinear Schrödinger equation, which includes the impact of higher-order dispersion, the optical Kerr effect and Raman amplification are presented. One of the easiest ways to generate pulses with a frequency difference is to use the fibers with variable dispersion.
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Yu. A. Mazhirina, L. A. Kochkurov, A. I. Konukhov, and L. A. Melnikov "Generation of THz radiation based on Raman effect in photonic crystal fiber", Proc. SPIE 9031, Saratov Fall Meeting 2013: Optical Technologies in Biophysics and Medicine XV; and Laser Physics and Photonics XV, 903113 (30 January 2014); https://doi.org/10.1117/12.2050851
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KEYWORDS
Terahertz radiation

Raman spectroscopy

Solitons

Raman scattering

Dispersion

Photonic crystal fibers

Nonlinear optics

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