PURPOSE To expand a geometrical model of diffraction efficiency and its interpretation to the multifocal optic and to introduce formulas for analysis of far and near light distribution and their application to multifocal intraocular lenses (IOLs) and to diffraction efficiency optimization. SETTING Medical device consulting firm, Newport Coast, California, USA. DESIGN Experimental study. M...

This paper introduces a storage ring lattice design for synchrotron radiation sources which fulfills all the required features realization of diffraction limited light source. Insertion devices half gaps 2.5 mm are assumed and enabled by dedicated straight sections. The use long sections is possible such led to definition set transparency conditions used minimize effect insertions on- off- ener...

Under suitable conditions polystyrene microsphere colloids form photonic crystals capable of diffracting visible light, analogous to x-ray diffraction from atomic crystal planes. The lattice spacings of these crystals can be tailored to satisfy the Bragg condition along a certain direction for a particular desired wavelength. A modified Mach-Zehnder interferometer has been developed for accurat...

The paper is devoted to investigation of Bragg diffraction of light by ultrasound propagating in media possessing strong anisotropy of acoustic properties. It is shown that acoustic anisotropy of crystals influences on the process of light and sound interaction. In case of Bragg regime of acousto-optic interaction, intensity of diffracted light and frequency bandwidths of diffraction in the cry...

We report an experimental demonstration of diffraction of He* atoms from a magneto-optical grating. The grating was produced by the interaction of three-level atoms with a light field of spatially varying polarization and a magnetic field. For a light shift matched to the Zeeman shift. a two-peaked diffraction pattern was observed. corresponding to a momentum splitting of 42hk. The effect of ch...