We discuss a simple beam interference approximation method for deriving the angular selectivity of diffraction in weakly modulated volume holographic gratings. The results obtained using the multiple beam interference model agree qualitatively with the results obtained from a physical optics treatment of the coupled-wave theory for volume holographic gratings. © 2009 American Association of Phy...

The paper presents a new theory of unfolding of eigenvalue surfaces of real symmetric and Hermitian matrices due to an arbitrary complex perturbation near a diabolic point. General asymptotic formulae describing deformations of a conical surface for different kinds of perturbing matrices are derived. As a physical application, singularities of the surfaces of refractive indices in crystal optic...

Tristram J. Alexander, Mario Salerno, Elena A. Ostrovskaya, and Yuri S. Kivshar Nonlinear Physics Center and ARC Center of Excellence for Quantum-Atom Optics, Research School of Physical Sciences and Engineering, Australian National University, Canberra ACT 0200, Australia Dipartimento di Fisica, “E.R. Cainiello” Università di Salerno, I-84081 Baronissi (SA), Italy Received 16 November 2007; pu...

When the research was performed the author was with the Physical Institute, University of Erlangen-Nürnberg, Erlangen D-8520, Germany. He is now at the Laboratory for Digital Optics, Institute of Information Transmission Problems, Academy of Sciences of the USSR, Yermolovoj str. 19, Moscow 101447, Russia. Received 13 September 1991. 0003-6935/92/111677-03$05.00/0. © 1992 Optical Society of Amer...

The diffraction theory of Kirchhoff is applied to the semi-infinite aperture of a black half-screen. The derivative of the spherical Green's function is taken into account without any approximation. The uniformly evaluated scattering integral is compared with the physical optics solution. It is shown that the non-omitted term causes the existence of fictitious diffracted waves.

In this work we study the Sobolev spaces generated by pseudo-differential operators associated with the group of symmetry of general first order hyperbolic systems. In these spaces we establish pointwise estimates of the solutions of a class of first order systems having convex eigenvalues. Various physical models belong to this class. For example, we consider crystal optics systems and anisotr...

The theorem of equivalence between the Kirchhoff aperture integration (AI) and the physical-optics (PO) approach applied to the interior walls of a open-ended waveguide [1] is generalized in this letter to the case of any open-ended structure (OES).

Marie Walde, Benedict Diederich, Bei Cao, Rainer Heintzmann 1 Berlin Institute for Medical Systems Biology, Max Delbrück Center, Robert-Rössle-Str. 10, 13125 Berlin, Germany 2 Institute of Physical Chemistry, Friedrich-Schiller-University Jena, Helmholtzweg 4, 07743 Jena, Germany 3 Xi'an Institute of Optics and Precision Mechanics of CAS, China 4 Leibniz Institute of Photonic Technology, Albert...

Mass specific optical absorption coefficients of mineral dust components measured by a multi wavelength photoacoustic spectrometer N. Utry, T. Ajtai, M. Pintér, E. Tombácz, E. Illés, Z. Bozóki, and G. Szabó Department of Optics and Quantum Electronics, University of Szeged, Szeged, Hungary Hungarian Academy of Sciences on Photoacoustic Research Group, Szeged, Hungary Department of Physical Chem...

Ray-Kuang Lee, Yinchieh Lai, and Yuri S. Kivshar Nonlinear Physics Centre and ARC Centre of Excellence for Quantum-Atom Optics, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, ACT 0200, Australia Department of Photonics and Institute of Electro-Optical Engineering, National Chiao-Tung University, Hsinchu 300, Taiwan sReceived 27 December 2004;...