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Title: Enhanced THz-to-IR emission from gas-surrounded metallic nanostructures by femtosecond laser irradiation
Authors: Zhang, L
Wu, T
Zhao, H
Zhang, C
Jin, W 
Zhang, XC
Keywords: Nanostructured materials
Surface plasmons
Thermal effect
Issue Date: 2016
Publisher: North-Holland
Source: Optics communications, 2016, v. 381, p. 414-417 How to cite?
Journal: Optics communications 
Abstract: Enhanced terahertz-to-infrared (THz-to-IR) emission from gas-surrounded nanostructured metal films as a result of femtosecond laser irradiation is systematically investigated using selected gases. The dependencies of the THz-to-IR power on the gas species, gas pressure, and pump optical power are studied for Ar, N2, Ne, and He. The experimental results reveal that the power of the THz-to-IR emission is related to the thermal conductivity of the gas in question. Moreover, the THz-to-IR emission power is dramatically enhanced when the gas pressure is close to zero.
ISSN: 0030-4018
EISSN: 1873-0310
DOI: 10.1016/j.optcom.2016.07.053
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