Speaker
Description
We have studied high-power terahertz-wave sources using a normal-conducting S-band linac at the Laboratory for Electron Beam Research and Application (LEBRA) at Nihon University [1, 2]. The developed coherent transition radiation (CTR) had a high energy of 1 mJ per macropulse [3]. However, the peak power of the CTR was approximately 100 kW and did not reach 1 MW, i.e., the level at which nonlinear optical phenomena are evident in the terahertz region. Therefore, we planned to generate high peak-power terahertz pulses by confining CTR micropulses in a ring-type resonator and superimposing them with CTR micropulses generated late within the resonator. By inserting a substrate with low absorption in the terahertz region into the resonator as an output coupler, it is possible to extract CTR pulses with high peak power while suppressing a cavity loss. In the presentation, we will report on this development plan based on the CTR pulse superimposition with the ring-type resonator at the LEBRA.
Funding Agency
Japan Society for the Promotion of Science KAKENHI
The Visiting Researcher's Program of the Kyoto University Institute for Integrated Radiation and Nuclear Science
Footnotes
- N. Sei et al., J. Phys. D: Appl. Phys. 46 (2013) 045104.
- N. Sei et al., Sci Rep. 11 (2021) 3433.
- N. Sei et al., Jpn. J. Appl. Phys. 56 (2017) 032401.
