55 citations · 223 across the 10 of their papers we have counts for
10 papers
Observation of nonlinear fractal higher-order topological insulator
Victor O. Kompanets, Hua Zhong, Yiqi Zhang +9
Higher-order topological insulators (HOTIs) are unique materials hosting topologically protected states, whose dimensionality is at least by a factor of 2 lower than that of the bu…
Observation of solitons in oscillating waveguide arrays
Antonina A. Arkhipova, Yiqi Zhang, Yaroslav V. Kartashov +8
Floquet systems with periodically varying in time parameters enable realization of unconventional topological phases that do not exist in static systems with constant parameters an…
Observation of rotation-induced light localization in waveguide arrays
Chunyan Li, Antonina A. Arkhipova, Yaroslav V. Kartashov +8
We study both, experimentally and theoretically, propagation of light in the fs-laser written rotating square waveguide arrays and present the first experimental evidence of light…
Observation of nonlinear disclination states
Boquan Ren, A. A. Arkhipova, Yiqi Zhang +10
Introduction of controllable deformations into periodic materials that lead to disclinations in their structure opens novel routes for construction of higher-order topological insu…
Observation of nonlinearity-controlled switching of topological edge states
A. A. Arkhipova, S. K. Ivanov, S. A. Zhuravitskii +8
We report the experimental observation of the periodic switching of topological edge states between two dimerized fs-laser written waveguide arrays. Switching occurs due to the ove…
Carrier-envelope phase of a light bullet
Elizaveta Zaloznaya, Victor Kompanets, Alexander Savvin +3
A light bullet is an extremely compressed in space and time wave packet of a few optical cycles, which is formed in the bulk transparent dielectric during femtosecond filamentation…
Mid IR single-cycle light bullet self-reconstruction after an air gap under single-pulse femtosecond filamentation in LiF
Sergey Chekalin, Alexandr Dormidonov, Valerii Kandidov +1
The results of investigation of extremely compressed wave packet-light bullet (LB) penetration through an air gap under single-pulse femtosecond Mid IR filamentation in LiF are pre…
Regular "Breathing" of Single-Cycle Light Bullets in Mid-IR Filament
S. V. Chekalin, V. O. Kompanets, A. V. Kuznetzov +3
Experimental and numerical studies of a temporal evolution of a light bullet formed in isotropic LiF by Mid IR femtosecond pulse (2500 to 3250 nm) of power, slightly exceeding the…
Ultrafast electronic and lattice dynamics in laser-excited crystalline bismuth
Alexey A. Melnikov, Oleg V. Misochko, Sergey V. Chekalin
Femtosecond spectroscopy is applied to study transient electronic and lattice processes in bismuth. Components with relaxation times of 1 ps, 7 ps and ~ 1 ns are detected in the ph…
Generation of coherent phonons in bismuth by ultrashort laser pulses in the visible and NIR: displacive versus impulsive excitation mechanism
A. A. Melnikov, O. V. Misochko, S. V. Chekalin
We have applied femtosecond pump-probe technique with variable pump wavelength to study coherent lattice dynamics in Bi single crystal. Comparison of the coherent amplitude as a fu…