Abstract
It is shown by simulations that terahertz (THz) radiation can be produced more efficiently by a mid-infrared laser pulse from a gas target. The THz amplitude is enhanced by 35 times as the laser wavelength increases from to ; a laser at produces THz radiation. The THz amplitude changes oscillatingly with increasing laser intensity for a given laser wavelength. In addition, the laser intensity threshold for the THz emission is lower for a longer laser wavelength.
© 2011 Optical Society of America
Full Article | PDF ArticleOSA Recommended Articles
W.-M. Wang, Z.-M. Sheng, H.-C. Wu, M. Chen, C. Li, J. Zhang, and K. Mima
Opt. Express 16(21) 16999-17006 (2008)
K. Y. Kim, J. H. Glownia, A. J. Taylor, and G. Rodriguez
Opt. Express 15(8) 4577-4584 (2007)
Takeshi Higashiguchi, Bowen Li, Yuhei Suzuki, Masato Kawasaki, Hayato Ohashi, Shuichi Torii, Daisuke Nakamura, Akihiko Takahashi, Tatsuo Okada, Weihua Jiang, Taisuke Miura, Akira Endo, Padraig Dunne, Gerry O’Sullivan, and Tetsuya Makimura
Opt. Express 21(26) 31837-31845 (2013)