User profiles for Heishun Zen
 | Heishun ZenAssociate Professor, Institute of Advanced Energy, Kyoto University Verified email at iae.kyoto-u.ac.jp Cited by 1295 |
[HTML][HTML] Full characterization of superradiant pulses generated from a free-electron laser oscillator
The detailed structure of superradiant pulses generated from a free-electron laser (FEL)
oscillator was experimentally revealed for the first time. Owing to the phase retrieval with a …
oscillator was experimentally revealed for the first time. Owing to the phase retrieval with a …
High-extraction-efficiency operation of a midinfrared free electron laser enabled by dynamic cavity desynchronization
The extraction efficiency is one of the key parameters of an oscillator-type free electron laser
(FEL). An extraction efficiency higher than 5% was observed with the midinfrared (MIR) FEL …
(FEL). An extraction efficiency higher than 5% was observed with the midinfrared (MIR) FEL …
Present status and perspectives of long wavelength free electron lasers at Kyoto University
A mid-infrared Free Electron Laser (FEL) named as Kyoto University FEL (KU-FEL) has been
developed for energy-related research at Institute of Advanced Energy, Kyoto University. …
developed for energy-related research at Institute of Advanced Energy, Kyoto University. …
Record high extraction efficiency of free electron laser oscillator
The highest extraction efficiency (9.4%) of a free electron laser (FEL) oscillator has been
achieved at the midinfrared FEL facility of Kyoto University. Because of the interaction between …
achieved at the midinfrared FEL facility of Kyoto University. Because of the interaction between …
Generation of high energy gamma-ray by laser Compton scattering of 1.94-μm fiber laser in UVSOR-III electron storage ring
H Zen, Y Taira, T Konomi, T Hayakawa, T Shizuma… - Energy Procedia, 2016 - Elsevier
Abstract Development of a laser Compton scattering (LCS) gamma-ray source in the
UVSOR-III storage ring has been proposed to perform basic research on non-destructive three …
UVSOR-III storage ring has been proposed to perform basic research on non-destructive three …
[HTML][HTML] Dissociation process of polyalanine aggregates by free electron laser irradiation
Polyalanine (polyA) disease-causative proteins with an expansion of alanine repeats can be
aggregated. Although curative treatments for polyA diseases have not been explored, the …
aggregated. Although curative treatments for polyA diseases have not been explored, the …
Lasing at 12 µm mid-infrared free-electron laser in kyoto university
Laser amplification using a 12 µm mid-infrared free-electron laser (MIR-FEL) was observed
at the Institute of Advanced Energy (IAE), Kyoto University. A 25 MeV electron beam of 17 A …
at the Institute of Advanced Energy (IAE), Kyoto University. A 25 MeV electron beam of 17 A …
[HTML][HTML] Demonstration of tomographic imaging of isotope distribution by nuclear resonance fluorescence
Computed Tomography (CT) using X-ray attenuation by atomic effects is now widely used
for medical diagnosis and industrial non-destructive inspection. In this study, we performed a …
for medical diagnosis and industrial non-destructive inspection. In this study, we performed a …
Measurement of the spatial polarization distribution of circularly polarized gamma rays produced by inverse Compton scattering
Inverse Compton scattering of polarized laser photons by energetic electrons is an excellent
method to generate polarized gamma rays. A 100% polarized laser can generate 100% …
method to generate polarized gamma rays. A 100% polarized laser can generate 100% …
Demonstration of a high-field short-period undulator using bulk high-temperature superconductor
The first ever practical-level field generation for an undulator consisting of bulk high-temperature
superconductors is reported and described. A high-field short-period undulator enables …
superconductors is reported and described. A high-field short-period undulator enables …