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Showing 1 to 12 of 77 entries
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Giant optical nonlinearity of graphene in a strong magnetic field.

Physical review letters

Yao X, Belyanin A.
PMID: 23004619
Phys Rev Lett. 2012 Jun 22;108(25):255503. doi: 10.1103/PhysRevLett.108.255503. Epub 2012 Jun 21.

We calculate the nonlinear optical response of graphene in strong magnetic and optical fields, using a quantum-mechanical density-matrix formalism. We show that graphene in a magnetic field possesses a giant mid- or far-infrared optical nonlinearity, perhaps the highest among...

Observation of a New Narrow Axial-Vector Meson a1(1420).

Physical review letters

Adolph C, Akhunzyanov R, Alexeev MG, Alexeev GD, Amoroso A, Andrieux V, Anosov V, Austregesilo A, Azevedo C, Badełek B, Balestra F, Barth J, Beck R, Bedfer Y, Bernhard J, Bicker K, Bielert ER, Birsa R, Bisplinghoff J, Bodlak M, Boer M, Bordalo P, Bradamante F, Braun C, Bressan A, Büchele M, Burtin E, Chang WC, Chiosso M, Choi I, Chung SU, Cicuttin A, Crespo ML, Curiel Q, Dalla Torre S, Dasgupta SS, Dasgupta S, Denisov OY, Dhara L, Donskov SV, Doshita N, Dünnweber W, Duic V, Dziewiecki M, Efremov A, Eversheim PD, Eyrich W, Faessler M, Ferrero A, Finger M, Finger M, Fischer H, Franco C, du Fresne von Hohenesche N, Friedrich JM, Frolov V, Gautheron F, Gavrichtchouk OP, Gerassimov S, Gnesi I, Gorzellik M, Grabmüller S, Grasso A, Grosse-Perdekamp M, Grube B, Grussenmeyer T, Guskov A, Haas F, Hahne D, von Harrach D, Hashimoto R, Heinsius FH, Herrmann F, Hinterberger F, Horikawa N, d'Hose N, Hsieh CY, Huber S, Ishimoto S, Ivanov A, Ivanshin Y, Iwata T, Jahn R, Jary V, Jörg P, Joosten R, Kabuß E, Ketzer B, Khaustov GV, Khokhlov YA, Kisselev Y, Klein F, Klimaszewski K, Koivuniemi JH, Kolosov VN, Kondo K, Königsmann K, Konorov I, Konstantinov VF, Kotzinian AM, Kouznetsov O, Krämer M, Kremser P, Krinner F, Kroumchtein ZV, Kuchinski N, Kunne F, Kurek K, Kurjata RP, Lednev AA, Lehmann A, Levillain M, Levorato S, Lichtenstadt J, Maggiora A, Magnon A, Makins N, Makke N, Mallot GK, Marchand C, Martin A, Marzec J, Matousek J, Matsuda H, Matsuda T, Meshcheryakov G, Meyer W, Michigami T, Mikhailov YV, Miyachi Y, Nagaytsev A, Nagel T, Nerling F, Neyret D, Nikolaenko VI, Novy J, Nowak WD, Nunes AS, Olshevsky AG, Orlov I, Ostrick M, Panzieri D, Parsamyan B, Paul S, Peng JC, Pereira F, Pesek M, Peshekhonov DV, Platchkov S, Pochodzalla J, Polyakov VA, Pretz J, Quaresma M, Quintans C, Ramos S, Regali C, Reicherz G, Riedl C, Rocco E, Rossiyskaya NS, Ryabchikov DI, Rychter A, Samoylenko VD, Sandacz A, Santos C, Sarkar S, Savin IA, Sbrizzai G, Schiavon P, Schmeing S, Schmidt K, Schmieden H, Schönning K, Schopferer S, Schlüter T, Selyunin A, Shevchenko OY, Silva L, Sinha L, Sirtl S, Slunecka M, Sozzi F, Srnka A, Stolarski M, Sulc M, Suzuki H, Szabelski A, Szameitat T, Sznajder P, Takekawa S, Ter Wolbeek J, Tessaro S, Tessarotto F, Thibaud F, Tskhay V, Uhl S, Veloso J, Virius M, Wallner S, Weisrock T, Wilfert M, Zaremba K, Zavertyaev M, Zemlyanichkina E, Ziembicki M, Zink A.
PMID: 26340182
Phys Rev Lett. 2015 Aug 21;115(8):082001. doi: 10.1103/PhysRevLett.115.082001. Epub 2015 Aug 19.

The COMPASS Collaboration at CERN has measured diffractive dissociation of 190  GeV/c pions into the π(-)π(-)π(+) final state using a stationary hydrogen target. A partial-wave analysis (PWA) was performed in bins of 3π mass and four-momentum transfer using the...

Four-Wave Mixing in Landau-Quantized Graphene.

Nano letters

König-Otto JC, Wang Y, Belyanin A, Berger C, de Heer WA, Orlita M, Pashkin A, Schneider H, Helm M, Winnerl S.
PMID: 28234493
Nano Lett. 2017 Apr 12;17(4):2184-2188. doi: 10.1021/acs.nanolett.6b04665. Epub 2017 Feb 28.

For Landau-quantized graphene, featuring an energy spectrum consisting of nonequidistant Landau levels, theory predicts a giant resonantly enhanced optical nonlinearity. We verify the nonlinearity in a time-integrated degenerate four-wave mixing (FWM) experiment in the mid-infrared spectral range, involving the...

Influence of climatic and hydrological factors on structure and composition of peat from northern wetland territories with low anthropogenic impact.

The Science of the total environment

Parfenova LN, Selyanina SB, Trufanova MV, Bogolitsyn KG, Orlov AS, Volkova NN, Ponomareva TI, Sokolova TV.
PMID: 26874767
Sci Total Environ. 2016 May 01;551:108-15. doi: 10.1016/j.scitotenv.2016.01.204. Epub 2016 Feb 12.

Northern wetlands ecosystems play an important role in the hydrological balance of neighboring areas, where they act as chemical barriers against anthropogenic and technogenic contaminations. Studied region is well known for quantity of peat deposits and the volume of...

Recurrent Aeromonas Bacteremia Due to Contaminated Well Water.

Open forum infectious diseases

Katz MJ, Parrish NM, Belani A, Shah M.
PMID: 26495324
Open Forum Infect Dis. 2015 Oct 20;2(4):ofv142. doi: 10.1093/ofid/ofv142. eCollection 2015 Dec.

Although they are ubiquitous to aquatic environments, Aeromonas species have traditionally been considered nonvirulent; however, in the past 30 years, they have emerged as important human pathogens that can cause a wide spectrum of disease. In this study, we...

Active mode-locking of mid-infrared quantum cascade lasers with short gain recovery time.

Optics express

Wang Y, Belyanin A.
PMID: 25836455
Opt Express. 2015 Feb 23;23(4):4173-85. doi: 10.1364/OE.23.004173.

We investigate the dynamics of actively modulated mid-infrared quantum cascade lasers (QCLs) using space- and time-domain simulations of coupled density matrix and Maxwell equations with resonant tunneling current taken into account. We show that it is possible to achieve...

Harmonic generation from relativistic plasma surfaces in ultrasteep plasma density gradients.

Physical review letters

Rödel C, an der Brügge D, Bierbach J, Yeung M, Hahn T, Dromey B, Herzer S, Fuchs S, Pour AG, Eckner E, Behmke M, Cerchez M, Jäckel O, Hemmers D, Toncian T, Kaluza MC, Belyanin A, Pretzler G, Willi O, Pukhov A, Zepf M, Paulus GG.
PMID: 23005951
Phys Rev Lett. 2012 Sep 21;109(12):125002. doi: 10.1103/PhysRevLett.109.125002. Epub 2012 Sep 19.

Harmonic generation in the limit of ultrasteep density gradients is studied experimentally. Observations reveal that, while the efficient generation of high order harmonics from relativistic surfaces requires steep plasma density scale lengths (L(p)/λ < 1), the absolute efficiency of...

Active mode locking of quantum cascade lasers in an external ring cavity.

Nature communications

Revin DG, Hemingway M, Wang Y, Cockburn JW, Belyanin A.
PMID: 27147409
Nat Commun. 2016 May 05;7:11440. doi: 10.1038/ncomms11440.

Stable ultrashort light pulses and frequency combs generated by mode-locked lasers have many important applications including high-resolution spectroscopy, fast chemical detection and identification, studies of ultrafast processes, and laser metrology. While compact mode-locked lasers emitting in the visible and...

The duration of REM sleep epic, odes in normal sleep.

Journal of sleep research

Belyavin AJ.
PMID: 10607040
J Sleep Res. 1992 Jun;1(2):128-131. doi: 10.1111/j.1365-2869.1992.tb00025.x.

The distributions of the durations of the first 3 REM sleep episodes have been analysed using a total of 134 overnight sleep recordings from 10 subjects. From investigation of the length of uninterrupted episodes of stage REM, it is...

Resonant second-order nonlinear optical processes in quantum cascade lasers.

Physical review letters

Owschimikow N, Gmachl C, Belyanin A, Kocharovsky V, Sivco DL, Colombelli R, Capasso F, Cho AY.
PMID: 12570424
Phys Rev Lett. 2003 Jan 31;90(4):043902. doi: 10.1103/PhysRevLett.90.043902. Epub 2003 Jan 31.

We demonstrate an efficient intracavity nonlinear interaction of laser modes in a specially adapted quantum cascade laser. A two-wavelength quantum cascade laser structure emitting at wavelengths of 7.1 and 9.5 micrometer included cascaded resonant optical intersubband transitions in an...

Coherent radiation from neutral molecules moving above a grating.

Physical review letters

Belyanin A, Kocharovsky V, Kocharovsky V, Capasso F.
PMID: 11863723
Phys Rev Lett. 2002 Feb 04;88(5):053602. doi: 10.1103/PhysRevLett.88.053602. Epub 2002 Jan 22.

We predict and study the effect of parametric self-induced excitation of a molecule moving above the dielectric or conducting medium with periodic grating. In this case the radiation reaction force modulates the molecular transition frequency which results in a...

Mid-IR optical amplification and detection using quantum cascade lasers.

Optics express

Guo D, Chen X, Cheng L, Belyanin A, Choa FS.
PMID: 24514631
Opt Express. 2013 Dec 16;21(25):30545-52. doi: 10.1364/OE.21.030545.

Amplification and detection characteristics of mid-infrared quantum cascade lasers (QCLs) are studied. The QCL amplifier has an adjustable bandwidth and tunable gain peak to function as a tunable mid-IR filter. By biasing the QCL slightly below its threshold, we...

Showing 1 to 12 of 77 entries