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year 28, Issue 2 (ICOP & ICPET 2022 2022)
ICOP & ICPET _ INPC _ ICOFS 2022, 28(2): 265-268 |
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Jahangiri F, Hassani M, Mohamadi M. Coherent Amplification of Terahertz Radiation Generated by Optical Rectification of Ultrashort Laser Pulses in Carbon Nanotubes. ICOP & ICPET _ INPC _ ICOFS 2022; 28 (2) :265-268
URL: http://opsi.ir/article-1-2559-en.html
URL: http://opsi.ir/article-1-2559-en.html
1- Laser and plasma institute
2- Laser and plasma
2- Laser and plasma
Abstract: (726 Views)
Chiral carbon nanotubes have significant second-order nonlinear optical properties and can be used to produce terahertz radiation through the optical rectification process. But achieving high efficiency requires the provision of coherent amplification conditions along the gain medium and adjustment of the phase velocity of terahertz wave produced and the group velocity of laser wave of the pump. In this article, we examine the above conditions. For this purpose, the factors affecting this phenomenon include the scattering behavior of carbon nanotubes in the visible frequency range and terahertz range, the laser pulse length used and the effective length of carbon nanotubes are obtained and optimized.[D1] We also examine the spectra and time profile of the terahertz field for different lengths of the environment using the theoretical foundations used.
Keywords: : Nonlinear optics, terahertz radiation, ultra-short laser, carbon nanotubes, optical rectifier
Type of Study: Experimental |
Subject:
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