Theory of diffraction-radiation generator on basis of discrete-interaction model

Evdokimenko, Yu. I.; Skrynnik, B. K.

doi:10.1007/bf01037397

Cited by 2 publications

(4 citation statements)

References 1 publication

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“…3a), and the energy is extracted from the electron beam in two zones with respect to the asynchronism parameter at v b < v ph01 and v b > v ph01 . The appearance of an additional generation zone at v b < v ph01 was detected first in [5], and the peculiarities of the electron beam energy exchange in the case of the negative velocity detuning were studied in [11]. A small spread of the frequencies of the TEM 003 and TEM 013 modes in the open cavity is Fig.…”

Section: Theoretical Model Of the Multistage Diffraction-radiation Gementioning

confidence: 96%

“…Specifically, we used a self-consistent system of equations describing the dynamics of linear and nonlinear DRG regimes allowing for discrete interaction [8] and the solving algorithm for this system [9]. As the resonance system of a multistage DRG, we choose a semispheric open resonator with a reflecting diffraction lattice overlapping its plane mirror partially (see Fig.…”

Section: Theoretical Model Of the Multistage Diffraction-radiation Gementioning

confidence: 99%

“…On the other hand, a multistage interaction space can be produced in one open resonator, where a higher TEM 0nq mode is excited in a DRG, which has n "spots" of the field, i.e., stages, along the direction of the electron beam motion on the lattice. The earlier analysis of the peculiarities of excitation of higher modes in the DRG [5] and the orotron [6] with the antiphase field at the neighboring "spots" on the lattice demonstrated an increase in the starting current compared with the excitation of the fundamental TEM 00q modes. However, one can increase the length of the DRG interaction space without changing the curvature radius of the mirrors in the open resonator by means of ensuring the phase synchronism of the electron beam with the resonance field at all spots (stages) for the higher TEM 0nq modes, thus reducing the value of the starting current, correspondingly.…”

Section: Introductionmentioning

confidence: 99%

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Mode excitation in a generator of diffraction radiation with a multistage interaction space

Miroshnichenko

Senkevich

Pivovarova

et al. 2010

Radiophys Quantum El

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We present the results of studying theoretically and experimentally the peculiarities of mode excitation in a generator of diffraction radiation with the two-and three-cascade interaction space in one open resonator. To describe the multistage interaction mechanism, the theoretical model used considers the excitation of the TEM 0nq modes, which have n in-phase field "spots," i.e., cascades, along the direction of the electron beam motion. It is shown that even the use of the two-cascade interaction space with the TEM 01q modes allows one to reduce the starting current of the generator by 1.91 times. The results of studying experimentally the two-cascade generator in the 5 and 1.5-mm wavelength ranges are presented. The in-phase property of the electron beam with the resonance field was achieved by disrupting the periodicity of the lattice slots at the center of the interaction space. The output power of the two-stage generator of 5-mm diffraction radiation in the TEM 013 mode ranged from 3 to 5 W. We also observed a 4-5-fold increase in the starting current for the regime of surface waves.

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Section: Theoretical Model Of the Multistage Diffraction-radiation Gementioning

confidence: 96%

Section: Theoretical Model Of the Multistage Diffraction-radiation Gementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Mode excitation in a generator of diffraction radiation with a multistage interaction space

Miroshnichenko

Senkevich

Pivovarova

et al. 2010

Radiophys Quantum El

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“…We'll call this case, as mode competition on beam accelerating voltage. For DRO with double grating, operated on TEM00q-mode, the potential competitor on accelerating voltage is the TEM01q-mode with two antiphase field spots along interaction space [5,6]. The suppression of DRO excitation on TEM01q-mode is realized by reduction of ORS mirrors aperture along OY axis (Fig.…”

Section: Mode Competition Features In Dro With Symmetric and Asymmetrmentioning

confidence: 99%

Diffraction Radiation Oscillator with Asymmetric Open Resonant System. Part 2. Hot Test Results of Diffraction Radiation Oscillator

Miroshnichenko¹,

Kovalov²

2016

J. Nano- Electron. Phys.

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The hot test results of diffraction radiation oscillator with asymmetric open resonant system, in which the periodic structure was shifted to the field spot periphery of the operating TEM00q-mode, are presented. It is shown, that displacement of the periodic structure, in double grating form, to field spot periphery of TEM00q-mode allows extending the single-mode frequency tuning range and improves the overall efficiency of diffraction radiation oscillator. The mode competition features in diffraction radiation oscillator with double grating and asymmetric open resonant system are considered. The investigations were carried out in 8-mm waveband.

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Theory of diffraction-radiation generator on basis of discrete-interaction model

Cited by 2 publications

References 1 publication

Mode excitation in a generator of diffraction radiation with a multistage interaction space

Mode excitation in a generator of diffraction radiation with a multistage interaction space

Diffraction Radiation Oscillator with Asymmetric Open Resonant System. Part 2. Hot Test Results of Diffraction Radiation Oscillator

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