caa a22 4500 445305681 CHVBK 20180317142612.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1007/s10762-011-9799-0 doi (NATIONALLICENCE)springer-10.1007/s10762-011-9799-0 Half Cycle Terahertz Pulse Generation by Prism-Coupled Cherenkov Phase-Matching Method [Elektronische Daten] [Kodo Kawase, Shingo Ichino, Koji Suizu, Takayuki Shibuya] Nonlinear optical terahertz wave generation is a promising method for realizing a practical source with wide frequency range and high peak power. Unfortunately, many nonlinear crystals have a strong absorption in the terahertz frequency region. This limits efficient and widely tunable terahertz wave generation. The Cherenkov phase-matching method is one of the most promising techniques for overcoming these problems. We propose a prism-coupled Cherenkov phase-matching method, in which a prism with a suitable refractive index at terahertz frequencies is coupled to a nonlinear crystal. We demonstrate prism-coupled Cherenkov phase-matching terahertz generation using the DAST and LiNbO3 crystals. With a DAST crystal, we obtain a spectral flat tunability up to 10THz by difference frequency generation. With a LiNbO3 crystal, we observe a spectral flat broadband terahertz pulse generation up to 5THz pumped by a femto second fiber laser. The obtained temporal waveform is an ideal half cycle pulse suitable for reflection terahertz tomography. Springer Science+Business Media, LLC, 2011 Terahertz wave nationallicence Nonlinear optics nationallicence Cherenkov phase-matching nationallicence Tomography nationallicence Kawase Kodo Nagoya University, Ecotopia, Furo-cho, 464-8603, Nagoya, Japan aut Ichino Shingo Nagoya University, Ecotopia, Furo-cho, 464-8603, Nagoya, Japan aut Suizu Koji Nagoya University, Ecotopia, Furo-cho, 464-8603, Nagoya, Japan aut Shibuya Takayuki Nagoya University, Ecotopia, Furo-cho, 464-8603, Nagoya, Japan aut Journal of Infrared, Millimeter, and Terahertz Waves Springer US; http://www.springer-ny.com 32/10(2011-10-01), 1168-1177 1866-6892 32:10<1168 2011 32 10762 https://doi.org/10.1007/s10762-011-9799-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10762-011-9799-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kawase Kodo Nagoya University, Ecotopia, Furo-cho, 464-8603, Nagoya, Japan aut NATIONALLICENCE 700 1- Ichino Shingo Nagoya University, Ecotopia, Furo-cho, 464-8603, Nagoya, Japan aut NATIONALLICENCE 700 1- Suizu Koji Nagoya University, Ecotopia, Furo-cho, 464-8603, Nagoya, Japan aut NATIONALLICENCE 700 1- Shibuya Takayuki Nagoya University, Ecotopia, Furo-cho, 464-8603, Nagoya, Japan aut NATIONALLICENCE 773 0- Journal of Infrared, Millimeter, and Terahertz Waves Springer US; http://www.springer-ny.com 32/10(2011-10-01), 1168-1177 1866-6892 32:10<1168 2011 32 10762 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer