55 citations · 387 across the 20 of their papers we have counts for
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Thresholdless corner vortex solitons in fractal Sierpiński topological insulators
Yiqi Zhang, Alexander V. Kireev, Victor O. Kompanets +12
Quantized vortices are ubiquitous in physics, spanning superconductivity, astrophysics, superfluid condensed matter systems, and nonlinear optics. Yet embedding vorticity into topo…
Controllable ultrabroadband supercontinuum during twocolor femtosecond laser filamentation in high pressure gases
Yury E. Geints, Victor O. Kompanets, Sergey V. Chekalin
Twocolor laser filamentation is considered a promising strategy for deep transformations of the spectrum and generating ultrashort light pulses, which is critically important for d…
Observation of linear and nonlinear light trapping on topological dislocations
S. K. Ivanov, A. V. Kireev, K. Sabour +11
Topological dislocations in otherwise periodic lattices represent global structural defects that, nevertheless, typically leave the lattice periodicity intact far from the dislocat…
Observation of nonlinear higher-order topological insulators with unconventional boundary truncations
Changming Huang, Alexander V. Kireev, Yuxin Jiang +10
In higher-order topological insulators (HOTIs), topologically nontrivial phases are usually associated with the shift of Wannier centers to topologically nontrivial positions on th…
Observation of nonlinear topological corner states originating from different spectral charges
Victor O. Kompanets, Suge Feng, Yiqi Zhang +11
Higher-order topological insulators (HOTIs) are unique topological materials supporting edge states with the dimensionality at least by two lower than the dimensionality of the und…
Measurements of Optical Kerr Nonlinearity n2 in Compressed Gases
Yury E. Geints, Victor O. Kompanets, Sergey V. Chekalin
High-power optical pulses experience self-focusing when propagating in a gaseous medium due to the manifestation of the cubic (Kerr-like) nonlinearity. The magnitude of this effect…
Observation of Light Localization at the Edges of Quasicrystal Waveguide Arrays
S. K. Ivanov, S. A. Zhuravitskii, N. S. Kostyuchenko +10
Quasicrystals are unique systems that, unlike periodic structures, lack translational symmetry but exhibit long-range order dramatically enriching the system properties. While evol…
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 linear and nonlinear light localization at the edges of moiré lattices
A. A. Arkhipova, Y. V. Kartashov, S. K. Ivanov +11
We observe linear and nonlinear light localization at the edges and in the corners of truncated moiré lattices created by the superposition of periodic mutually-twisted at Pythagor…
Valley Hall edge solitons in a photonic graphene
Qian Tang, Boquan Ren, Victor O. Kompanets +3
We predict the existence and study properties of the valley Hall edge solitons in a composite photonic graphene with a domain wall between two honeycomb lattices with broken invers…
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…
Dark topological valley Hall edge solitons
Boquan Ren, Hongguang Wang, Victor O. Kompanets +3
Topological edge solitons propagating along the edge of a photonic topological insulator are localized self-sustained hybrid states that are immune to de-fects/disorders due to pro…
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…
Giantically blue-shifted visible light in femtosecond mid-IR filament in fluorides
A. E. Dormidonov, V. O. Kompanets, S. V. Chekalin +1
A giant blue shift of an isolated visible band of supercontinuum was discovered and studied in the single filament regime of Mid-IR femtosecond laser pulse at powers slightly excee…