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Frequency conversion of structured light
(Macmillan Publishers, 2016-02-15)
Article.
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Article.
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Coherent frequency conversion of structured light, i.e. the ability to manipulate the carrier frequency of a wave front without distorting its spatial phase and intensity profile, provides the opportunity for numerous novel ...
Disorder-induced temperature fluctuations in nonequilibrium systems
(1992-01)
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Article.
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The authors study the effects on heat diffusion related to the presence of a quenched disorder of impurities at the boundaries. A simple lattice model summarizes the main characteristics of the surface through which the ...
Method to generate complex quasinondiffracting optical lattices
(2010-07-02)
Article.
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Article.
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We put forward a powerful technique that allows generating quasi-non-diffracting light beams with a variety of complex transverse shapes and topologies. We show that, e.g., spi-raling patterns, patterns featuring curved ...
Soliton control in chirped photonic lattices
(2005-07)
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We study optical solitons in chirped periodic optical lattices whose amplitude or frequency changes in the transverse direction. We discover that soliton propagation in such lattices can be accompanied by the progressive ...
Leaky modes in multilayer anisotropic optical waveguides
(1990)
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Article.
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The propagation characteristics of the leaky modes in planar anisotropic waveguides with a multilayer structure have been investigated by means of a compact rigorous formalism. The leakage losses and leaky transition angle ...
Spiraling vortices in exciton-polariton condensates
(American Physical Society (APS), 2020-07-23)
Article.
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Article.
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We introduce the phenomenon of spiraling vortices in driven-dissipative (nonequilibrium) exciton-polariton condensates excited by a nonresonant pump beam. At suitable low pump intensities, these vortices are shown to spiral ...
Self-homodyne detection of the light orbital angular momentum
(2012-07-15)
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Article.
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A simple optical system for the self-homodyne detection of the orbital angular momentum (OAM) carried by optical
beams is introduced. We propose two different schemes based on the use of optical hybrids, which could detect ...
Fast monitoring of in-vivo conformational changes in myosin using single scan polarization- SHG microscopy
(2014-12-01)
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Article.
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Fast imaging of molecular changes under high-resolution and
label-free conditions are essential for understanding in-vivo processes, however, current techniques are not able to monitor such changes in real time. Polarization ...
Twisted photons
(2007-05)
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Article.
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The orbital angular momentum of light represents a fundamentally new optical degree of freedom. Unlike linear momentum, or spin angular momentum, which is associated with the polarization of light, orbital angular momentum ...
Engineerable generation of quadratic solitons in synthetic phase-matching
(2000-09)
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We show that the efficiency and the mismatch bandwidth of quadratic soliton formation under conditions of second-harmonic generation can be enhanced in an important way in synthetic phase-matching profiles. Soliton excitation ...