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Outline

Laser is the ultimate light source created by mankind, and it has become an indispensable tool for our social life. In this laboratory, our main goal is to create an unexplored ultrafast laser by using the extreme nature of laser such as ultrashort pulse, super broadband, high power, and so on. Specifically, we are developing a high-power a few-cycle laser source, and using it to develop novel laser source with full coherence in the soft x-ray region and a pulse width of attosecond region. We extend the frontier of laser science through the development of novel laser sources.

Fields

Interdisciplinary Science and Engineering, Attosecond laser, Engineering, Physics

Keywords

High-power single-cycle laser, Attosecond laser, Thin-disk laser, fiber laser, Strong-field physics

Subjects

1. High-intensity single-cycle laser pulse
2. High-power coherent soft x-ray attosecond pulse
3. Ultrafast soft x-ray science
4. Next-generation quantum beam sources

Selected Publications

1. Rajpoot, R., and Takahashi E. J.: “Systematic analysis of an attosecond pulse generation by a subcycle laser field”, Phys. Rev. Res. 7, 013047 (2025).
2. Nishimiya, K., and Takahashi E. J.: “Octave-spanning supercontinuum coherent soft x-ray for producing a single-cycle soft x-ray pulse”, Opt. Lett. 49, 5779 (2024).
3. Lu, X., and Takahashi, E.J.: “Dual-chirped optical parametric amplification of high-energy single-cycle laser pulses”, Nat. Photonics 18, 99-106 (2024).
4. Bing, X., Midorikawa, K., and Takahashi, E.J.: “Gigawatt-class, tabletop, isolated-attosecond-pulse light source”, Optica 9, 360-363 (2022).
5. Lu, X., Bing, X., Ishii, N., Itatani, J., Midorikawa, K., and Takahashi, E.J.:“100-mJ class, sub-two-cycle, carrier-envelope phase-stable dual-chirped optical parametric amplification”, Opt. Lett. 47, 3371-3374 (2022).

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