26 citations · 59 across the 5 of their papers we have counts for
6 papers
Photon vortex generation from nonlinear Compton scattering in Feynman approach
Tomoyuki Maruyama, Takehito Hayakawa, Ryoichi Hajima +2
In the present study, we show calculation of nonlinear Compton scattering with circularly polarized photons in a cylindrical coordinate using Feynman diagram to calculate photon vo…
Stable beam operation of approximately 1 mA beam under highly efficient energy recovery conditions at compact energy-recovery linac
Hiroshi Sakai, Dai Arakawa, Takaaki Furuya +37
A compact energy-recovery linac (cERL) has been un-der construction at KEK since 2009 to develop key technologies for the energy-recovery linac. The cERL began operating in 2013 to…
Full characterization of few-cycle superradiant pulses generated from a free-electron laser oscillator
Heishun Zen, Ryoichi Hajima, Hideaki Ohgaki
The detailed structure of few-cycle superradiant pulses generated from a free-electron laser (FEL) oscillator was experimentally revealed for the first time. As predicted in numeri…
Construction and Commissioning of Mid-Infrared SASE FEL at cERL
Yosuke Honda, Masahiro Adachi, Shu Eguchi +26
The mid-infrared range is an important spectrum range where materials exhibit a characteristic response corresponding to their molecular structure. A free-electron laser (FEL) is a…
International Workshop on Next Generation Gamma-Ray Source
C. R. Howell, M. W. Ahmed, A. Afanasev +50
A workshop on The Next Generation Gamma-Ray Sources sponsored by the Office of Nuclear Physics at the Department of Energy, was held November 17--19, 2016 in Bethesda, Maryland. Th…
Generating carrier-envelope-phase stabilized few-cycle pulses from a free-electron laser oscillator
Ryoichi Hajima, Ryoji Nagai
We propose a scheme to generate carrier-envelope-phase (CEP) stabilized few-cycle optical pulses from a free-electron laser oscillator. The CEP stabilization is realized by continu…