First lasing of the KAERI compact far-infrared free-electron laser driven by a magnetron-based microtron

Jeong, Young Uk; Lee, Byung Cheol; Kim, Sun Kook; Cho, Sung Oh; Heon, Byung; Lee, Jongmin; Kazakevitch, Grigori M.; Vobly, P.D.; Gavrilov, N.G.; Kubarev, V. V.; Кулипанов, Г.Н.

doi:10.1016/s0168-9002(01)01533-9

Cited by 65 publications

(8 citation statements)

References 10 publications

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“…A compact FEL oscillating at 100-300 µm has been constructed at the Korea Atomic Energy Research Institute (KAERI). 122) Although Japan was a late starter in the development of THz FELs, the Institute of Science and Industrial Research, Osaka University, has succeeded in producing an FEL with oscillation at 70-100 µm, which has started to be used in joint research on a trial basis [Fig. 11(b)].…”

Section: Radiation By Electron Tubes and Acceleratorsmentioning

confidence: 99%

Development and future prospects of terahertz technology

Hangyo

2015

Jpn. J. Appl. Phys.

148

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Recently, the technology of terahertz (THz) waves, which have been called undeveloped electromagnetic waves, has been making remarkable progress. In addition to the technologies of generating THz waves using lasers, which are promoting this progress, advances are being made in THz generation methods using electronic devices and accelerators, and various THz optical components have been actively developed. The applications of THz technology are also becoming increasingly widespread. In this report, I will review these developments and discuss the future prospects of this field.

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Section: Radiation By Electron Tubes and Acceleratorsmentioning

confidence: 99%

Development and future prospects of terahertz technology

Hangyo

2015

Jpn. J. Appl. Phys.

148

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“…Furthermore, electrostatic accelerators are capable of long to continuous wave electron pulses, that can result in single longitudinal mode oscillation, with a relative linewidth of about 10 −8 over a time of 5 µs, which was set by the voltage droop present in the accelerator [6] at the time of measurement. On the other hand, the short duration of, and spread in, electron energy for the electron pulses produced by RF linacs typically leads to a relative linewidth of the order of 10 −4 to 10 −2 [13,29,[40][41][42][43][44][45][46][47][48][49][50][51][52][53], unless additional spectral filtering is used. For example, using the Vernier effect of a double cavity resonator to reduce the number of intra-cavity longitudinal modes and subsequent external filtering, an RF-linac-based FEL oscillator was able to provide a single longitudinal mode [54].…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional, Time-Dependent Analysis of High- and Low-Q Free-Electron Laser Oscillators

Slot

Freund

2021

Applied Sciences

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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 configurations, including amplifiers and oscillators. Oscillators can operate in both the low and high gain regime and are typically used to improve the spatial and temporal coherence of the light generated. We will discuss various FEL oscillators, ranging from systems with high-quality resonators combined with low-gain undulators, to systems with a low-quality resonator combined with a high-gain undulator line. The FEL gain code MINERVA and wavefront propagation code OPC are used to model the FEL interaction within the undulator and the propagation in the remainder of the oscillator, respectively. We will not only include experimental data for the various systems for comparison when available, but also present, for selected cases, how the two codes can be used to study the effect of mirror aberrations and thermal mirror deformation on FEL performance.

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“…Furthermore, electrostatic accelerators are capable of long to continuous wave electron pulses, that can result in single longitudinal mode oscillation with a relative linewidth of about 10 −8 over a time of 5 𝜇s, which was set by the voltage droop present in the accelerator [5] at the time of measurement. On the other hand, the short duration of and spread in electron energy for the electron pulses produced by RF linacs typically leads to a relative linewidth of the order of 10 −4 to 10 −2 [12,28,[39][40][41][42][43][44][45][46][47][48][49][50][51][52], unless additional spectral filtering is used. For example, using the Vernier effect of a double cavity resonator to reduce the number of intra-cavity longitudinal modes and subsequent external filtering, an RF-linac-based FEL oscillator was able to provide a single longitudinal mode [53].…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional, time-dependent analysis of high- and low-Q free-electron laser oscillators

Slot¹,

Freund²

2021

Preprint

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Free-electron lasers (FELs) have been designed to operate over virtually the entire electromagnetic spectrum from microwaves through x-rays and in a variety of configurations including amplifiers and oscillators. Oscillators can operate in both the low and high gain regime and are typically used to improve the spatial and temporal coherence of the light generated. We will discuss various FEL oscillators ranging from systems with high-quality resonators combined with low-gain undulators to systems with a low-quality resonator combined with a high-gain undulator line. The FEL gain code MINERVA and wavefront propagation code OPC are used to model the FEL interaction within the undulator and the propagation in the remainder of the oscillator, respectively. We will not only include experimental data for the various systems for comparison when available, but also present for selected cases how the two codes can be used to study the effect of mirror aberrations and thermal mirror deformation on FEL performance.

show abstract

First lasing of the KAERI compact far-infrared free-electron laser driven by a magnetron-based microtron

Cited by 65 publications

References 10 publications

Development and future prospects of terahertz technology

Development and future prospects of terahertz technology

Three-Dimensional, Time-Dependent Analysis of High- and Low-Q Free-Electron Laser Oscillators

Three-dimensional, time-dependent analysis of high- and low-Q free-electron laser oscillators

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