Abstract
We report on the generation of high-energy (1.9 μJ) far-infrared pulses tunable between 4 and 18 THz frequency. Emphasis is placed on tunability and on minimizing the bandwidth of these pulses to less than 1 THz, as achieved by difference-frequency mixing of two linearly chirped near-infrared pulses in the organic nonlinear crystal DSTMS. As the two near-infrared pulses are derived from amplification of the same white light continuum, their carrier envelope phase fluctuations are mutually correlated, and hence the difference-frequency THz field exhibits absolute phase stability. This source opens up new possibilities for the control of condensed matter and chemical systems by selective excitation of low-energy modes in a frequency range that has, to date, been difficult to access.
© 2016 Optical Society of America
Full Article | PDF ArticleMore Like This
A. Cartella, T. F. Nova, A. Oriana, G. Cerullo, M. Först, C. Manzoni, and A. Cavalleri
Opt. Lett. 42(4) 663-666 (2017)
Yanchun Yin, Jie Li, Xiaoming Ren, Kun Zhao, Yi Wu, Eric Cunningham, and Zenghu Chang
Opt. Lett. 41(6) 1142-1145 (2016)
Keisuke Kaneshima, Nobuhisa Ishii, Kengo Takeuchi, and Jiro Itatani
Opt. Express 24(8) 8660-8665 (2016)