Experimental results are presented of the first successful gyrotron backward wave
oscillator<? format?>(gyro-BWO) with continuous frequency tuning near the low-terahertz …

The input coupler is an important component for a microwave amplifier. In this paper, a
sidewall single-hole input coupler for a W-band gyrotron traveling-wave amplifier that …

A broadband multi-layer microwave window operating in the W-band frequency range was
numerically simulated, constructed and its microwave properties measured. The window …

A quasi-optical mode converter in the form of a corrugated horn has been designed through
numerical simulations, manufactured and experimentally measured for application in W …

In this paper, a smoothly profiled horn was designed and manufactured to replace a
corrugated output horn for a W-band gyrotron traveling-wave amplifier with improved …

A well-known principle for periodical production of high-power ultrashort optical pulses is
related to passive mode locking realized when a saturable absorber is incorporated into the …

This paper presents the experimental study of microwave pulse compression using a five-
fold helically corrugated waveguide. In the experiment, the maximum power compression …

The frequency agility of a W-band gyrotron travelling wave amplifier (gyro-TWA) was
demonstrated by the amplification of a frequency-swept input signal (chirp signal). The gyro …

A polarization convertor based on a truncated circular waveguide is studied. It is simple to
make and suitable for operating in the low terahertz frequency range. The bandwidth …

Microwave undulators (MUs) can be an alternative to the permanent magnet undulators in a
free-electron laser. MUs normally employ a cavity-type structure that supports the standing …