| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1532974 | Optics Communications | 2016 | 4 Pages |
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.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Liangliang Zhang, Tong Wu, Hang Zhao, Cunlin Zhang, Wei Jin, X.-C. Zhang,