A. M. Merzlikin

Optical Tamm States in One-Dimensional Magnetophotonic Structures

We demonstrate the existence of a spectrally narrow localized surface state, the so-called optical Tamm state, at the interface between one-dimensional magnetophotonic and nonmagnetic photonic crystals. The state is spectrally located inside the photonic band gaps of each of the photonic crystals comprising this magnetophotonic structure. This state is associated with a sharp transmission peak through the sample and is responsible for the substantial enhancement of the Faraday rotation for the corresponding wavelength. The experimental results are in excellent agreement with the theoretical predictions.

Additional effective medium parameters for composite materials (excess surface currents).

Modified boundary conditions for composite material are suggested. The modified RT-retrieval procedure yields bulk values of effective impedance and refractive index, which are independent of system size and boundary realization, whereas the conductivities of the excess surface currents depend on the property of the interface. Simultaneous treatment of all the possible realizations of the system removes the dependence. The accuracy of the latter procedure is the same as the usage of static effective parameters, namely k(eff)d.

Inverse Borrmann effect in photonic crystals

The Borrmann effect, which is related to the microscopic distribution of the electromagnetic field inside the primitive cell, is studied in photonic and magnetophotonic crystals. This effect, well-known in x-ray spectroscopy, is responsible for the enhancement or suppression of various linear and nonlinear optical effects when the incidence angle and/or the frequency change. It is shown that by design of the primitive cell this effect can be suppressed and even inverted.

Frequency dependence of localization length of an electromagnetic wave in a one-dimensional system

Abstract It is shown that the existence in the high-frequency limit of the localization length of an electromagnetic wave in a randomly layered system requires the presence of an infinitely large number of layers with different incommensurable optical paths. Moreover, the measure of the layers with optical paths that are multiples of any real number should equal zero. The localization length in the high-frequency limit is determined by the mean value of the layer thickness and impedance distribution only. The scaling behavior L loc ( k 0 )∼ k 0 −2 is observed only if the mean value tends to zero (corresponding to a delta-correlated process).

Experimental Study of the Faraday Effect in 1D-Photonic Crystal in Millimeter Waveband

The paper is devoted to experimental study of Faraday Effect enhancement. The experimental structure consists of photonic crystal, loaded with ferrite, which in turn is covered by thin metal layer or wire medium. An analysis of the transmission/reflection spectra for both unloaded and loaded photonic crystals shows that the surface oscillation mode (the surface state) is formed in the crystal band gap. A good agreement exists between experimental data and numerical calculations.

Frequency Control of the Microwave Tamm State

Tunneling of microwave radiation through the surface Tamm state that is generated at the interface between two different periodic structures (photonic crystals) has been studied theoretically and experimentally. The possibility of controlling the transmission frequency of this system with the use of an external magnetic field has been predicted theoretically and confirmed experimentally.

Structural and optical properties of single and bilayer silver and gold films

An experimental study of structural and optical properties of silver and gold thin films, as well as bilayer films based on these metals, has been carried out. To study properties of nanofilms, reflection spectra upon excitation of surface plasmons in the Kretschmann geometry and spectra of ellipsometric parameters have been investigated. The reflection spectra were analyzed using a theoretical model for determining (effective) dielectric constants of the films. The calculated dielectric constants of the films differ from data obtained by ellipsometry. The features in determining dielectric constants by different methods and characteristics of manufactured films in relation to the influence of the substrate are discussed.

Superprism effect in one-dimensional magnetic photonic crystals

So-called magnetic-superprism effect is studied consisting in an extremely large deviation of a light ray in a photonic crystal under the influence of an external magnetic field. It is demonstrated that the magnetic superprism effect is possible in one-dimensional magnetic photonic crystals.

Enhancement of the Faraday and Other Magneto-Optical Effects in Magnetophotonic Crystals

It is shown that for existent natural materials the Faraday rotation is far below the theoretical limit [Steel et al. in J. Lightwave Technol. 18:1297, 2000]. Under this condition the value of the Faraday rotation is primarily determined by the Q-factor, while the low group velocity value, multipass traveling and energy concentration in magneto-optical material play a secondary role. A comparative analysis of the efficiency of different schemes employing defect modes, Tamm surface states, the Borrmann effect and plasmon resonance is presented.

The mmW Band Tamm States in One-Dimensional Magnetophotonic Crystals

The mmW band photonic Tamm states in 1D magnetophotonic crystals are studied. It is shown the possibility to manipulate the eigenfrequencies of such states by an external magnetic field. Our experimental results are in a good agreement with theoretical prediction.