This book contains a systematic treatment of the basic principles of free elec tron laser (FEL)
physics. It is primarily intended for physicists specializing in FEL physics and related fields …

Abstract The complex Ginzburg-Landau equation (CGLE) is a standard model for pulse
generation in mode-locked lasers with fast saturable absorbers. We have found complicated …

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 …

Experimental results of the observation of coherent stimulated radiation from
subnanosecond electron bunches moving through a periodic waveguide and interacting …

Free-electron lasers (FELs) have been designed to operate over virtually the entire
electromagnetic spectrum, from microwaves through to X-rays, and in a variety of …

Intense microwave pulses (several hundreds of kilowatts) of ultrashort duration (less than
0.5 ns) were obtained from an ensemble of electrons rotating in a uniform magnetic field …

A higher intensity THz beam is generated with a free-electron laser (FEL) based on the L-
band (1.3 GHz) electron linac at Osaka University by increasing the electron bunch charge …

We demonstrate that superradiance (SR) is a general feature of free-electron-laser (FEL)
devices, incuding high gain amplifiers as well as low gain oscillators, and that SR pulses …

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 …

Generation of few-cycle optical pulses in free-electron laser (FEL) oscillators has been
experimentally demonstrated in FEL facilities based on normal-conducting and …