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FEL-based study and THz radiation application

Place

Location: Budker INP
Address: Lavrentiev av. 11, Novosibirsk 630090 Russia
Room: Conference Hall
Date: 6 Jul 10:20 - 17:00

Conveners

  • Part I
    • Prof. Potaturkin, Oleg (Institute of automation SB RAS)
  • Part II
    • Prof. Shkurinov, Alexander (Faculty of Physics and International Laser Center, Lomonosov Moscow State University, Moscow, Russia)
  • Part III
    • Dr. Shevchenko, Oleg (BINP)

Timetable | Contribution List

Displaying 12 contributions out of 12
Type: Oral Session: FEL-based study and THz radiation application
Track: THz radiation aplication
Cooled germanium (Ge) photoconductive detectors are one of the most sensitive detectors at terahertz (THz) frequencies. They are widely used in laboratory spectroscopy and imaging experiments. The speed of a Ge photoconductive detector is set by technical limitations such as the bias circuit, the geometry of the detector crystal and the electric field applied to the .detector. The recovery speed o ... More
Presented by Mr. Nils DESSMANN on 6/7/2016 at 8:00
Type: Oral Session: FEL-based study and THz radiation application
Track: THz radiation aplication
Coherent synchrotron radiation (CSR) is emitted from bunches of relativistic electrons in a storage ring. The CSR spectrum depends on the shape of the electron bunch from which the CSR radiation is emitted. Instantaneous monitoring of the form and duration of the field transients in CSR pulses is important for applications in pump-probe studies of carrier dynamics in semiconductors and superconduc ... More
Presented by Mr. Andreas POHL on 6/7/2016 at 10:00
Type: Invited Oral Session: FEL-based study and THz radiation application
Track: THz radiation aplication
FEL-based optical pump-probe technique is usually applied for study of highly non-equilibrium electrons in semiconductors and in particularly for the relaxation of donor or acceptor bound excited states. Here we are focused on intervalley elastic scattering that is typical for donors in silicon crystal. As shown such process results in an additional feature in a pump-probe response that has been i ... More
Presented by Prof. Valery SHASTIN on 6/7/2016 at 4:20
Type: Oral Session: FEL-based study and THz radiation application
Track: THz radiation aplication
The present report describes a new phenomenon - short-term exposure of water with focused terahertz radiation of free electron laser leads to the formation of nanoparticle suspension (hydrosol). Composition of the particles formed corresponds to the material of metal containers used in the experiment. Fractional and elemental composition of the particles was determined by atomic force (AFM), scann ... More
Presented by Dr. Alexander KOZLOV on 6/7/2016 at 10:20
Type: Oral Session: FEL-based study and THz radiation application
Track: THz radiation aplication
Threshold conditions, plasma parameters, autooscillations and their stabilization in terahertz optical discharge on NovoFEL are considered in the report
Presented by Dr. Vitaly KUBAREV on 6/7/2016 at 8:20
Type: Oral Session: FEL-based study and THz radiation application
Track: THz radiation aplication
Timing jitter and power instabilities are crucial parameters which greatly reduce the applicability of accelerator driven light sources for time-resolved experiments. In this contribution we present a technique that allows achieving few 10 fs time-resolution in experiments operating at cw repetition rates of up to 100 kHz at presents of timing jitter in order of ps. As we show on the example of a ... More
Presented by Dr. Sergey KOVALEV on 6/7/2016 at 9:40
Type: Invited Oral Session: FEL-based study and THz radiation application
Track: THz radiation aplication
A one-color pump-probe system has been commissioned at the Novosibirsk free electron laser facility. Results of current experiments on the study of dynamical absorption of semiconductors will be described.
Presented by Ms. Yulia CHOPOROVA on 6/7/2016 at 7:00
Type: Oral Session: FEL-based study and THz radiation application
Track: THz radiation aplication
In the last decade the use of infrared free electron laser facilities enabled observation of inelastic light (Raman) scattering in THz frequency range. Raman-active intracenter donor transitions in silicon fall into the THz range and serve as outgoing resonances in electronic Stokes scattering. At photon fluxes above 1E24 photon/cm2/s donor-related Raman stimulated emission occurs in the range 4.2 ... More
Presented by Dr. Sergey PAVLOV on 6/7/2016 at 14:40
Type: Invited Oral Session: FEL-based study and THz radiation application
Track: THz radiation aplication
Methods of single-pulse high-resolution spectroscopy based on powerful tunable radiation of terahertz NovoFEL, ultra-fast technique, and strong magnetic field of superconducting solenoid are presented in the report
Presented by Dr. Vitaly KUBAREV on 6/7/2016 at 5:30
Type: Invited Oral Session: FEL-based study and THz radiation application
Track: THz radiation aplication
The analysis of ateroid’s surface grains allows to match remote observations and modeling of its history and current properties with laboratory experiments. Mass spectrometry and electron microscopy of the dust enables detailed study of the history of asteroidal regolith and compare the results with theoretical considerations of the evolution of rubble piles in the inner solar system. A correlat ... More
Presented by Dr. Sergey PAVLOV on 6/7/2016 at 5:00
Type: Oral Session: FEL-based study and THz radiation application
Track: THz radiation aplication
Terahertz surface plasmons propagated along real metal-dielectric structures, as well as their propagation through the macroscopic air gapes between two conducting surfaces, have been studied. The experimental results obtained using terahertz radiation of Novosibirsk free-electron laser and comparison with theory will be presented
Presented by Mr. Vasily GERASIMOV on 6/7/2016 at 7:20
Type: Invited Oral Session: FEL-based study and THz radiation application
Track: THz radiation aplication
Small-scale accelerator-based radiation sources have been used for developing advanced technologies and exploring new science with high convenience and low cost. Sometimes they are competitive comparing with giant facilities like X-ray free-electron lasers (X-FELs). We have developed a laboratory-scale ultrashort electron accelerator for investigating femtosecond dynamics of atoms or molecules wit ... More
Presented by Dr. Young Uk JEONG on 6/7/2016 at 9:00
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