IPAC'23 - 14th International Particle Accelerator Conference

Carrier-envelope phase stabilization in FEL oscillators

TUPL054

9 May 2023, 16:30

2h

Sala Laguna

Poster Presentation MC2.A06: Free Electron Lasers Tuesday Poster Session

Speaker

Ryoichi Hajima (National Institutes for Quantum Science and Technology)

Description

FEL oscillators can produce few-cycle optical pulses with a high-extraction efficiency when the oscillators are operated in the superradiant regime. Such FEL oscillators are unique light sources to explore intense light field science, especially in mid-infrared and longwave infrared where ultrashort pulses are difficult to produce from conventional lasers. Since the laser-matter interaction in the intense field regime is described in terms of the oscillating electric field rather than the instantaneous intensity, the carrier-envelope phase (CEP) must be stabilized in many applications of few-cycle optical pulses to the intense light field science. Stabilization of CEP in FEL oscillators has been proposed with an external seed laser and coherent radiation of electron bunches **. In this paper, we study CEP stabilization in FEL oscillators with numerical simulations and discuss applications of CEP-stable FEL pulses in the intense light field science.

Funding Agency

This work was supported by Q-LEAP JPMXS0118070271 and JSPS KAKENHI Grant Numbers JP22H03881 and JP22H0871.

Footnotes

• R. Hajima and R. Nagai, Phys. Rev. Lett. 119, 204802 (2017).
  ** P. Pongchalee and B. McNeil, FEL-2022. MOP32 (2022).