Enhanced THz-to-IR emission from gas-surrounded metallic nanostructures by femtosecond laser irradiation

Liangliang Zhang, Tong Wu, Hang Zhao, Cunlin Zhang, Wei Jin, X. C. Zhang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

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.
Original languageEnglish
Pages (from-to)414-417
Number of pages4
JournalOptics Communications
Volume381
DOIs
Publication statusPublished - 15 Dec 2016

Keywords

  • Nanostructured materials
  • Surface plasmons
  • Thermal effect

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Cite this