In this paper, we will introduce the concept of discrete solitons and we will discuss some of the... more In this paper, we will introduce the concept of discrete solitons and we will discuss some of their spatio-temporal dynamics, which leads to interesting consequences in both the fundamental and the applied domain
Ultrafast Phenomena in Semiconductors and Nanostructure Materials XIV, 2010
We present the possibility of light beam propagation control in a Kerr nonlinear magneto-optic me... more We present the possibility of light beam propagation control in a Kerr nonlinear magneto-optic medium through the efficient management of linear and circular birefringences. We show numerically that the joint birefringences, achieved through the combined use of the Cotton-Mouton and Faraday effects, can effectively accelerate, postpone or even arrest the nonlinear collapse (for a fixed value of the optical power). We also present the experimental observation of collapse tuning in a bulk Yttrium Iron Garnet (YIG) crystal placed in an external magnetic field. The obtained results offer new possibilities towards the use of magneto-optic effects for controlling various nonlinear phenomena.
Frontiers in Optics 2009/Laser Science XXV/Fall 2009 OSA Optics & Photonics Technical Digest, 2009
... 3Department of Physical Electronics, School of Electrical Engineering, Faculty of Engineering... more ... 3Department of Physical Electronics, School of Electrical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel * [email protected] ... 1-4. [6] R. Kurzynowski and WA Wozniak, Superposition rule for the magneto-optic effects in isotropic media”, Optik 115, 473 ...
We have performed in situ real time mass sensing of deposited liquid volatile droplets and sprays... more We have performed in situ real time mass sensing of deposited liquid volatile droplets and sprays using plate-like microstructures, with robust and reusable performance attained over harsh conditions and multiple cycles of operation. A home-built electrooptical sensing system in ambient conditions has been used. The bimorph effect on the resonant frequency of altered mass loading, elasticity, and strain had been carefully compared, and the latter were found to be negligible in the presence of nonviscous liquids deposited on top of our microplate devices. In resonant mode, the loaded mass has been estimated from measured resonant frequency shifts and interpreted from a simple, uniformly deposited film model. A minimum submicrogram detectable mass was estimated, suggesting the system's potential for robust, fast, and reusable sensing capabilities, in the presence of volatile liquids under harsh operation conditions.
2005 Quantum Electronics and Laser Science Conference, 2005
Imaging by a simplified near-field scanning optical microscope and numerical simulations reveal t... more Imaging by a simplified near-field scanning optical microscope and numerical simulations reveal the complex spatiotemporal dynamics during the propagation of 60-fs pulses in nonlinear planar silica waveguides, in the anomalous dispersion regime.
... 3Department of Physical Electronics, School of Electrical Engineering, Faculty of Engineering... more ... 3Department of Physical Electronics, School of Electrical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel *[email protected] ... 1-4. [6] R. Kurzynowski and WA Wozniak, Superposition rule for the magneto-optic effects in isotropic media”, Optik 115, 473 ...
We demonstrate a technique for a single shot mapping of nonlinear phase shift profiles in spatial... more We demonstrate a technique for a single shot mapping of nonlinear phase shift profiles in spatial solitons that are formed during short pulse propagation through one-dimensional slab AlGaAs waveguides, in the presence of a focusing Kerr nonlinearity. The technique uses a single beam and relies on the introduction of a lithographically etched reflective planar mirror surface positioned in proximity to the beam's input position. Using this setup we demonstrate nonlinearity-induced sharp lateral phase variations for certain initial conditions, and creation of higher spatial harmonics when the beam is in close proximity to the mirror.
... of Physics, Warsaw University of Technology, PL-00062 Warsaw, Poland 3Department of Physical ... more ... of Physics, Warsaw University of Technology, PL-00062 Warsaw, Poland 3Department of Physical Electronics, School of Electrical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel *[email protected] ... [8] R. Kurzynowski, WA Wozniak, “Superposition rule ...
Bragg Gratings, Photosensitivity, and Poling in Glass Waveguides, 2007
Tilted beams, propagating in the self-defocusing regime of a waveguide array, away from a soliton... more Tilted beams, propagating in the self-defocusing regime of a waveguide array, away from a soliton, are shown to refocus due to the nonlinear interaction, emerging in intermediate sites as function of the relative phase.
ABSTRACT Large amplitude vibrations are excited in single layer SOI microcantilevers in ambient a... more ABSTRACT Large amplitude vibrations are excited in single layer SOI microcantilevers in ambient air, driven by symmetrical electrodes around grounded cantilevers and characterized optically with laser Doppler vibrometery under ambient conditions
... Our crystals were grown on Gd3Ga5O12 (GGG) substrates by using pulsed laser deposition. ... T... more ... Our crystals were grown on Gd3Ga5O12 (GGG) substrates by using pulsed laser deposition. ... The choice of GGG as a substrate was driven by the necessity of minimizing both the lattice and the thermal expansion mismatch, in order to enable epitaxial growth. ...
Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS, 2009
We report the growth and the characterization of novel Ce2.2Bi0.8Fe5O12-(Ce:BiIG) epitaxial thin ... more We report the growth and the characterization of novel Ce2.2Bi0.8Fe5O12-(Ce:BiIG) epitaxial thin films. By using a magneto-optical set-up in a transmission geometry, we recorded the highest Faraday rotation ever reported for magneto-optical garnet thin films, i.e. 0.55 degrees/mum @1550 nm.
We experimentally study the polarization dynamics (orientation and ellipticity) of near infrared ... more We experimentally study the polarization dynamics (orientation and ellipticity) of near infrared light transmitted through magnetooptic Yttrium Iron Garnet isolator crystal pairs using a modified balanced detection scheme. When the pair separation is in the sub-millimeter range, we observed a proximity effect in which the saturation field is reduced by up to 20%. Calculations using a 1D model suggest that the proximity effect originates from magnetostatic interactions between the dipole moments of the isolator crystals.
Scattering by local potential discontinuities is a fundamental aspect of wave physics . The most ... more Scattering by local potential discontinuities is a fundamental aspect of wave physics . The most basic configuration is wave scattering in one dimension (1D), where there is a clear distinction between bound states, which exist only for attractive potential discontinuities, and continuum states, which are common to all geometries. Importantly, all states are orthogonal in the linear-wave regime. In particular, an excitation in the continuum is partially reflected and partially transmitted, but does not couple to a bound state. A well-known realization of 1D scattering involves the propagation of electromagnetic waves in planar waveguide structures. In this case, the photonic potential is a variation of the refractive index as a function of the x coordinate, which does not depend on the z coordinate. The z axis is then analogous to time in the scattering problem, and a decrease of the propagation constant (the z-component of the wave number) corresponds to an increase of energy of a particle incident on the timeindependent 1D potential. Here, the bound states are guided modes (which can only be excited by directcoupling), and the continuum, scattering states are radiation modes (which can be excited by side-coupling, i.e., by a beam that enters the structure from the side, via the surrounding clad). Similarly to the scattering problem, the guided modes and radiation modes are completely decoupled in the linear regime. The analogy between the linear problems is well established. However, when the dielectric medium in which the wave propagates has a (Kerrtype) nonlinear response, the beam may effectively induce potential changes by itself, which would alter the scattering dynamics and lead to novel effects that are inhibited for linear waves and which have no known counterparts in the particle scattering problem. One possibility is a transfer of energy between orthogonal linear modes and, in particular, trapping of light by guided modes of the structure.
In this paper, we will introduce the concept of discrete solitons and we will discuss some of the... more In this paper, we will introduce the concept of discrete solitons and we will discuss some of their spatio-temporal dynamics, which leads to interesting consequences in both the fundamental and the applied domain
Ultrafast Phenomena in Semiconductors and Nanostructure Materials XIV, 2010
We present the possibility of light beam propagation control in a Kerr nonlinear magneto-optic me... more We present the possibility of light beam propagation control in a Kerr nonlinear magneto-optic medium through the efficient management of linear and circular birefringences. We show numerically that the joint birefringences, achieved through the combined use of the Cotton-Mouton and Faraday effects, can effectively accelerate, postpone or even arrest the nonlinear collapse (for a fixed value of the optical power). We also present the experimental observation of collapse tuning in a bulk Yttrium Iron Garnet (YIG) crystal placed in an external magnetic field. The obtained results offer new possibilities towards the use of magneto-optic effects for controlling various nonlinear phenomena.
Frontiers in Optics 2009/Laser Science XXV/Fall 2009 OSA Optics & Photonics Technical Digest, 2009
... 3Department of Physical Electronics, School of Electrical Engineering, Faculty of Engineering... more ... 3Department of Physical Electronics, School of Electrical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel * [email protected] ... 1-4. [6] R. Kurzynowski and WA Wozniak, Superposition rule for the magneto-optic effects in isotropic media”, Optik 115, 473 ...
We have performed in situ real time mass sensing of deposited liquid volatile droplets and sprays... more We have performed in situ real time mass sensing of deposited liquid volatile droplets and sprays using plate-like microstructures, with robust and reusable performance attained over harsh conditions and multiple cycles of operation. A home-built electrooptical sensing system in ambient conditions has been used. The bimorph effect on the resonant frequency of altered mass loading, elasticity, and strain had been carefully compared, and the latter were found to be negligible in the presence of nonviscous liquids deposited on top of our microplate devices. In resonant mode, the loaded mass has been estimated from measured resonant frequency shifts and interpreted from a simple, uniformly deposited film model. A minimum submicrogram detectable mass was estimated, suggesting the system's potential for robust, fast, and reusable sensing capabilities, in the presence of volatile liquids under harsh operation conditions.
2005 Quantum Electronics and Laser Science Conference, 2005
Imaging by a simplified near-field scanning optical microscope and numerical simulations reveal t... more Imaging by a simplified near-field scanning optical microscope and numerical simulations reveal the complex spatiotemporal dynamics during the propagation of 60-fs pulses in nonlinear planar silica waveguides, in the anomalous dispersion regime.
... 3Department of Physical Electronics, School of Electrical Engineering, Faculty of Engineering... more ... 3Department of Physical Electronics, School of Electrical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel *[email protected] ... 1-4. [6] R. Kurzynowski and WA Wozniak, Superposition rule for the magneto-optic effects in isotropic media”, Optik 115, 473 ...
We demonstrate a technique for a single shot mapping of nonlinear phase shift profiles in spatial... more We demonstrate a technique for a single shot mapping of nonlinear phase shift profiles in spatial solitons that are formed during short pulse propagation through one-dimensional slab AlGaAs waveguides, in the presence of a focusing Kerr nonlinearity. The technique uses a single beam and relies on the introduction of a lithographically etched reflective planar mirror surface positioned in proximity to the beam's input position. Using this setup we demonstrate nonlinearity-induced sharp lateral phase variations for certain initial conditions, and creation of higher spatial harmonics when the beam is in close proximity to the mirror.
... of Physics, Warsaw University of Technology, PL-00062 Warsaw, Poland 3Department of Physical ... more ... of Physics, Warsaw University of Technology, PL-00062 Warsaw, Poland 3Department of Physical Electronics, School of Electrical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel *[email protected] ... [8] R. Kurzynowski, WA Wozniak, “Superposition rule ...
Bragg Gratings, Photosensitivity, and Poling in Glass Waveguides, 2007
Tilted beams, propagating in the self-defocusing regime of a waveguide array, away from a soliton... more Tilted beams, propagating in the self-defocusing regime of a waveguide array, away from a soliton, are shown to refocus due to the nonlinear interaction, emerging in intermediate sites as function of the relative phase.
ABSTRACT Large amplitude vibrations are excited in single layer SOI microcantilevers in ambient a... more ABSTRACT Large amplitude vibrations are excited in single layer SOI microcantilevers in ambient air, driven by symmetrical electrodes around grounded cantilevers and characterized optically with laser Doppler vibrometery under ambient conditions
... Our crystals were grown on Gd3Ga5O12 (GGG) substrates by using pulsed laser deposition. ... T... more ... Our crystals were grown on Gd3Ga5O12 (GGG) substrates by using pulsed laser deposition. ... The choice of GGG as a substrate was driven by the necessity of minimizing both the lattice and the thermal expansion mismatch, in order to enable epitaxial growth. ...
Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS, 2009
We report the growth and the characterization of novel Ce2.2Bi0.8Fe5O12-(Ce:BiIG) epitaxial thin ... more We report the growth and the characterization of novel Ce2.2Bi0.8Fe5O12-(Ce:BiIG) epitaxial thin films. By using a magneto-optical set-up in a transmission geometry, we recorded the highest Faraday rotation ever reported for magneto-optical garnet thin films, i.e. 0.55 degrees/mum @1550 nm.
We experimentally study the polarization dynamics (orientation and ellipticity) of near infrared ... more We experimentally study the polarization dynamics (orientation and ellipticity) of near infrared light transmitted through magnetooptic Yttrium Iron Garnet isolator crystal pairs using a modified balanced detection scheme. When the pair separation is in the sub-millimeter range, we observed a proximity effect in which the saturation field is reduced by up to 20%. Calculations using a 1D model suggest that the proximity effect originates from magnetostatic interactions between the dipole moments of the isolator crystals.
Scattering by local potential discontinuities is a fundamental aspect of wave physics . The most ... more Scattering by local potential discontinuities is a fundamental aspect of wave physics . The most basic configuration is wave scattering in one dimension (1D), where there is a clear distinction between bound states, which exist only for attractive potential discontinuities, and continuum states, which are common to all geometries. Importantly, all states are orthogonal in the linear-wave regime. In particular, an excitation in the continuum is partially reflected and partially transmitted, but does not couple to a bound state. A well-known realization of 1D scattering involves the propagation of electromagnetic waves in planar waveguide structures. In this case, the photonic potential is a variation of the refractive index as a function of the x coordinate, which does not depend on the z coordinate. The z axis is then analogous to time in the scattering problem, and a decrease of the propagation constant (the z-component of the wave number) corresponds to an increase of energy of a particle incident on the timeindependent 1D potential. Here, the bound states are guided modes (which can only be excited by directcoupling), and the continuum, scattering states are radiation modes (which can be excited by side-coupling, i.e., by a beam that enters the structure from the side, via the surrounding clad). Similarly to the scattering problem, the guided modes and radiation modes are completely decoupled in the linear regime. The analogy between the linear problems is well established. However, when the dielectric medium in which the wave propagates has a (Kerrtype) nonlinear response, the beam may effectively induce potential changes by itself, which would alter the scattering dynamics and lead to novel effects that are inhibited for linear waves and which have no known counterparts in the particle scattering problem. One possibility is a transfer of energy between orthogonal linear modes and, in particular, trapping of light by guided modes of the structure.
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Papers by Yoav Linzon