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Dive into the research topics where L.E. Medvedev is active.

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Featured researches published by L.E. Medvedev.


international conference on infrared, millimeter, and terahertz waves | 2004

Status of the Novosibirsk high power free electron laser

V.P. Bolotin; D.A. Kayran; Boris A. Knyazev; E.I. Kolobanov; V.V. Kotenkov; V. V. Kubarev; G.N. Kulipanov; A.N. Matveenko; L.E. Medvedev; S.V. Miginsky; L.A. Mironenko; A.D. Oreshkov; V.K. Ovchar; V.M. Popik; T.V. Salikova; S.S. Serednyakov; A.N. Skrinsky; O.A. Shevchenko; M.A. Scheglov; N.A. Vinokurov; N.S. Zaigraeva

The first stage of Novosibirsk high power free electron laser (FEL) was commissioned in 2003. It is based on normal conducting CW energy recovery linac. Now the FEL provides electromagnetic radiation in the wavelength range 120-180 micron. The average power is 100 W. The measured linewidth is 0.3%, which is close to the Fourier-transform limit. The assembly of user beamline is in progress. Plans of future developments are discussed.


international conference on infrared, millimeter, and terahertz waves | 2005

Quasi-continuous sub-millimeter optical discharge on Novosibirsk free electron laser: experiments and elementary theory

V.P. Bolotin; Boris A. Knyazev; E.I. Kolobanov; V.V. Kotenkov; V.V. Kubarev; G.N. Kulipanov; A.N. Matveenko; L.E. Medvedev; A.D. Oreshkov; B.Z. Persov; V.M. Popik; T.V. Salikova; S.S. Serednyakov; O.A. Shevchenko; M.A. Scheglov; N.A. Vinokurov

The first quasi-continuous optical discharge in near sub-millimeter spectral range was demonstrated on high-power Novosibirsk free electron laser. Experimental results and elementary theory of this phenomenon are presented.


international conference on infrared, millimeter, and terahertz waves | 2005

Novosibirsk terahertz free electron laser: status and survey of experimental results

V.P. Bolotin; Valery S. Cherkassky; E.N. Chesnokov; Boris A. Knyazev; E.I. Kolobanov; V.V. Kotenkov; A.S. Kozlov; V.V. Kubarev; G.N. Kulipanov; A.N. Matveenko; L.E. Medvedev; S.V. Miginsky; L.A. Mironenko; A.D. Oreshkov; V.K. Ovchar; A.K. Petrov; V.M. Popik; P.D. Rudych; T.V. Salikova; S.S. Serednyakov; A.N. Skrinsky; O.A. Shevchenko; M.A. Scheglov; M.B. Taraban; N.A. Vinokurov; N.S. Zaigraeva

During the past year, generation characteristics of the Novisibirsk terahertz free electron laser were growing up. It generates now coherent radiation tunable in the range 120-170 /spl mu/m at the repetition rate of 2.8-11.2 MHz. Maximum average output power reaches 400 W at 11.2 MHz. Laser radiations are transmitted through a 14-m optical beamline to the user stations. Experiments on chemistry, biology, spectroscopy, imaging and holography with employment of terahertz radiation are in progress.


international conference on infrared, millimeter, and terahertz waves | 2009

High power THz applications on the NovoFEL

R. R. Akberdin; E. N. Chesnokov; M. A. Dem'yanenko; D. G. Esaev; T. N. Goryachevskaya; A. E. Klimov; Boris A. Knyazev; E.I. Kolobanov; A. S. Kozlov; V. V. Kubarev; G.N. Kulipanov; Sergei A. Kuznetsov; A.N. Matveenko; L.E. Medvedev; E. V. Naumova; A. V. Okotrub; V.K. Ovchar; Konstantin S. Palagin; N. S. Paschin; S. G. Peltek; A. K. Petrov; V. Ya. Prinz; V.M. Popik; T.V. Salikova; S.S. Serednyakov; A.N. Skrinsky; O.A. Shevchenko; M.A. Scheglov; N.A. Vinokurov; Maxim G. Vlasenko

High power THz applications on the Novosibirsk terahertz free electron laser are described.


international conference on infrared, millimeter, and terahertz waves | 2005

Highly sensitive fast Schottky-diode detectors in experiments on Novosibirsk free electron laser

E.I. Kolobanov; V.V. Kotenkov; V. V. Kubarev; G.N. Kulipanov; E.V. Makashov; A.N. Matveenko; L.E. Medvedev; A.D. Oreshkov; V.K. Ovchar; Konstantin S. Palagin; V.M. Popik; T.V. Salikova; S.S. Serednyakov; O.A. Shevchenko; M.A. Scheglov; N.A. Vinokurov

Fast Schottky-diode detectors is used for measurement and optimization of main parameters of Novosibirsk free electron laser (FEL) such as losses in optical resonator, small signal gain, optimal output coupling. Possibility of applying of the device for measurement of coherence time and FEL pulse duration is considered. We plan also to calibrate free electron laser wavelengths by this detector and etalon universal gas laser. High sensitivity of the detector allows apply of it in various users experiments too.


Journal of Synchrotron Radiation | 2003

Commissioning of the accelerator-recuperator for the FEL at the Siberian Center for Photochemical Research.

E. I. Antokhin; R. R. Akberdin; M. A. Bokov; V. P. Bolotin; O. I. Deichuli; E. N. Dementyev; A.N Dubrovin; B. A. Dovgenko; Yu. A. Evtushenko; N.G. Gavrilov; E. I. Gorniker; D. A. Kairan; M.A. Kholopov; O. B. Kiselev; E.I. Kolobanov; A. A. Kondakov; N. L. Kondakova; S. A. Krutikhin; V. V. Kubarev; G.N. Kulipanov; E. A. Kuper; I. V. Kuptsov; G.Ya. Kurkin; L. G. Leontyevskaya; V. Yu. Loskutov; L.E. Medvedev; A. S. Medvedko; S.V. Miginsky; L. A. Mironenko; A.D. Oreshkov

A 100 MeV eight-turn accelerator-recuperator intended to drive a high-power infrared free-electron laser (FEL) is currently under construction in Novosibirsk. The first stage of the machine includes a one-turn accelerator-recuperator that contains a full-scale RF system. It was commissioned successfully in June 2002.


international conference on infrared, millimeter, and terahertz waves | 2009

Modulation instability at the Novosibirsk terahertz free electron laser: Study and suppression

V. V. Kubarev; E.I. Kolobanov; G.N. Kulipanov; A.N. Matveenko; L.E. Medvedev; T.V. Salikova; M.A. Scheglov; S.S. Serednyakov; N.A. Vinokurov

Different mode regimes versus the extent modulation instability stabilization were investigated with a complex diagnostics system. Slippage due to frequency detuning of electron and light pulses turned out to be the main stabilization factor. Spectral and time parameters of the laser, especially the radiation of high harmonics, have been shown to strongly depend on the stabilization.


Physics of Particles and Nuclei Letters | 2006

A project of accelerator-recuperator for Novosibirsk high-power FEL

V. P. Bolotin; N.A. Vinokurov; D.A. Kayran; Boris A. Knyazev; E.I. Kolobanov; V.V. Kotenkov; V. V. Kubarev; G.N. Kulipanov; A.N. Matveenko; L.E. Medvedev; S.V. Miginsky; L. A. Mironenko; A.D. Oreshkov; V.K. Ovchar; V.M. Popik; T.V. Salikova; S.S. Serednyakov; A.N. Skrinsky; V.G. Tcheskidov; O.A. Shevchenko; M.A. Scheglov

The first stage of the Novosibirsk high-power free-electron laser (FEL) was commissioned in 2003. It is driven by a CW energy recovery linac. The next step will be the full-scale machine, a four-track accelerator-recuperator based on the same RF accelerating structure. This upgrade will permit to get shorter wavelengths in the infrared region and increase the average power of the FEL by several times. The scheme and some technical details of the project are set out. The installation will be a prototype for future multiturn accelerator-recuperators.


Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2001

Status of the free electron laser for the Siberian centre for photochemical research

B.A. Baklakov; A. Batrakov; V. P. Bolotin; Yu. A. Evtushenko; N.G. Gavrilov; E. I. Gorniker; D.A. Kairan; M.A. Kholopov; E.I. Kolobanov; A. A. Kondakov; S. A. Krutikhin; V. V. Kubarev; G.N. Kulipanov; E. A. Kuper; I. V. Kuptsov; G.Ya. Kurkin; L.E. Medvedev; A. S. Medvedko; E.G. Miginsky; S.V. Miginsky; L. A. Mironenko; A.D. Oreshkov; V.K. Ovchar; A.K. Petrov; V.M. Petrov; V.M. Popik; I. K. Sedlyarov; T.V. Shaftan; M.A. Scheglov; O.A. Shevchenko

Abstract A high-power infrared free electron laser is under construction in Novosibirsk. As the full-scale machine seems to be complicated and quite expensive, the project was divided into two stages so that the first-stage machine can be assembled and commissioned as soon as possible. Main features of the project and the current status are described.


international conference laser optics | 2016

Novosibirsk high-power THz FEL facility

N.A. Vinokurov; V. S. Arbuzov; K. N. Chernov; I. V. Davidyuk; E. N. Dementyev; B. A. Dovzhenko; Ya. V. Getmanov; Boris A. Knyazev; E.I. Kolobanov; A. A. Kondakov; Victor Kozak; E. V. Kozyrev; V. V. Kubarev; G.N. Kulipanov; E. A. Kuper; I. V. Kuptsov; G.Ya. Kurkin; S. V. Motygin; V. N. Osipov; V.M. Petrov; L.E. Medvedev; V.K. Ovchar; A. M. Pilan; V.M. Popik; V. V. Repkov; T.V. Salikova; M.A. Scheglov; I. K. Sedlyarov; G. V. Serdobintsev; S.S. Serednyakov

Novosibirsk free electron laser (FEL) facility contains three FELs operating in the wavelength range 8-240 micron at average power up to 0.5 kW and peak power about 1 MW. Radiation users works at 6 user stations performing biological, chemical, physical and medical research.

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E.I. Kolobanov

Budker Institute of Nuclear Physics

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G.N. Kulipanov

Budker Institute of Nuclear Physics

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M.A. Scheglov

Budker Institute of Nuclear Physics

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S.S. Serednyakov

Novosibirsk State University

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V.M. Popik

Budker Institute of Nuclear Physics

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O.A. Shevchenko

Budker Institute of Nuclear Physics

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T.V. Salikova

Budker Institute of Nuclear Physics

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V. V. Kubarev

Budker Institute of Nuclear Physics

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V.K. Ovchar

Budker Institute of Nuclear Physics

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Boris A. Knyazev

Budker Institute of Nuclear Physics

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