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High-Field High-Repetition-Rate Sources for the Coherent THz Control of Matter.


ABSTRACT: Ultrashort flashes of THz light with low photon energies of a few meV, but strong electric or magnetic field transients have recently been employed to prepare various fascinating nonequilibrium states in matter. Here we present a new class of sources based on superradiant enhancement of radiation from relativistic electron bunches in a compact electron accelerator that we believe will revolutionize experiments in this field. Our prototype source generates high-field THz pulses at unprecedented quasi-continuous-wave repetition rates up to the MHz regime. We demonstrate parameters that exceed state-of-the-art laser-based sources by more than 2 orders of magnitude. The peak fields and the repetition rates are highly scalable and once fully operational this type of sources will routinely provide 1?MV/cm electric fields and 0.3 T magnetic fields at repetition rates of few 100?kHz. We benchmark the unique properties by performing a resonant coherent THz control experiment with few 10 fs resolution.

SUBMITTER: Green B 

PROVIDER: S-EPMC4770290 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature

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High-Field High-Repetition-Rate Sources for the Coherent THz Control of Matter.

Green B B   Kovalev S S   Asgekar V V   Geloni G G   Lehnert U U   Golz T T   Kuntzsch M M   Bauer C C   Hauser J J   Voigtlaender J J   Wustmann B B   Koesterke I I   Schwarz M M   Freitag M M   Arnold A A   Teichert J J   Justus M M   Seidel W W   Ilgner C C   Awari N N   Nicoletti D D   Kaiser S S   Laplace Y Y   Rajasekaran S S   Zhang L L   Winnerl S S   Schneider H H   Schay G G   Lorincz I I   Rauscher A A AA   Radu I I   Radu I I   Mährlein S S   Kim T H TH   Lee J S JS   Kampfrath T T   Wall S S   Heberle J J   Malnasi-Csizmadia A A   Steiger A A   Müller A S AS   Helm M M   Schramm U U   Cowan T T   Michel P P   Cavalleri A A   Fisher A S AS   Stojanovic N N   Gensch M M  

Scientific reports 20160229


Ultrashort flashes of THz light with low photon energies of a few meV, but strong electric or magnetic field transients have recently been employed to prepare various fascinating nonequilibrium states in matter. Here we present a new class of sources based on superradiant enhancement of radiation from relativistic electron bunches in a compact electron accelerator that we believe will revolutionize experiments in this field. Our prototype source generates high-field THz pulses at unprecedented q  ...[more]

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