Showing papers in "Optics Communications in 1996"

TL;DR: Theoretical expressions of the radiation pressure force for a dielectric sphere in the Rayleigh regime of light scattering under illumination of a Gaussian laser beam with the fundamental mode are derived in explicit form as a function of measurable quantities of the beam parameter in MKS units as mentioned in this paper.

TL;DR: In this article, the authors studied the effect of sub-picosecond laser radiation on the energy and pulse duration of solid targets irradiated by Ti:sapphire laser radiation in the range of 10 9 − 5 × 10 16 W cm 2.

TL;DR: In this article, a spiral phaseplate was used at millimetre-wave frequencies to transform a free-space, fundamental Hermite-Gaussian mode into a Laguerre Gaussian mode with an azimuthal phase component.

TL;DR: In this article, a theoretical analysis of axicon-type computer-generated holograms designed to produce higher-order Jn-Bessel waves is presented and verified, whose validity is not confined to the optical axis.

TL;DR: In this article, the mathematical properties of a class of linear transforms, called the generalized Fresnel transforms, which have wide applications to several areas of optics were considered, and mathematical expressions for functions which remain invariant under such transforms were derived.

TL;DR: Two-photon pumped green cavity lasing has been observed in a solution of a new dye in N,N-dimethyl formamide (DMF) as mentioned in this paper, and the absorption and the fluorescence spectra of the new dye, along with the spectral and temporal behavior of the two-oton pumped lasing output is presented.

TL;DR: In this paper, a real-time, in situ non-perturbative all-optical approach for determining both the average thickness and the average dielectric constant of transparent thin films using surface plasmon resonance spectroscopy was proposed.

TL;DR: In this article, the pump excitation and power extraction of end-pumped quasi-three level CW laser oscillators are derived which are useful in the optimization of such systems, taking into account arbitrarily large ground state depletion due to intense pumping and gain saturation due to the extracting laser beam.

TL;DR: In this paper, the absorption characteristics of circular, offset, and rectangular double-clad fibers are investigated with phenomenological, simple, and comprehensible 2-D analysis models, and the dependence of absorption on fiber length is calculated with 3D ray tracing simulations.

TL;DR: The photon statistics and the density matrix (quantum state) of a single light mode can be sampled using homodyne detection and it is shown how the statistical errors of the reconstructed density matrix can be determined from the measured data.

TL;DR: In this article, it was shown experimentally that the ratio of the intensities of Rayleigh and Brillouin backscattered light (Landau Placzek ratio) in an optical fiber has a temperature dependence which may be used for the basis of a distributed temperature sensor.

TL;DR: In this article, a new method for synthesizing arbitrary intensity patterns based on phase contrast imaging is presented, which is grounded on an extension of the Zernike phase contrast method into the domain of full range [0, 2π] phase modulation.

TL;DR: In this paper, the authors extended the characterization of Gaussian beams to cartesian coordinates and characterized the beam propagation factor and kurtosis parameter dependences of the beam order N using the mode coefficients of the representation.

TL;DR: A unified analysis of all existing solitary wave solutions of the cubic-quintic nonlinear Schrodinger equation (CQNLSE) is made concretely, considering a monomode step-index optical fiber with third and fifth-order nonlinearities in the anomalous dispersion frequency region.

TL;DR: Based on an interpretation of the operating principle of passive polarization converters in terms of rotated vectorial eigenstates, it was shown that polarization rotation effects in angled facet passive converters can be maximized.

TL;DR: In this paper, a reformulation of nondiffracting beams, based on more general (travelling wave) solutions of the nonparaxial wave equation, is presented.

TL;DR: In this paper, the spatial characteristics of the white light continuum generated in water by femtosecond Ti:sapphire laser pulses with peak power well above the self-focusing threshold were investigated.

TL;DR: In this article, the authors proposed nonlinear optical devices for the near and mid infrared range that use an absorption transparency along with a resonantly enhanced second order susceptibility for efficient frequency conversion or parametric amplification.

TL;DR: In this paper, Coumarin 540-A has been dissolved in a copolymer of 2-hydroxyethyl methacrylate (HEMA) and MMM 1:1 v/v.

TL;DR: In this paper, the authors describe the efficient conversion of light from a laser diode into a Bessel beam whose axial intensity varies almost uniformly with distance using only a holographic optical element.

TL;DR: In this paper, the authors analyzed how the interaction between the probe and the field near the sample surface affects the characteristics of the images produced by a near-field scanning optical microscope.

TL;DR: In this paper, the orbital angular momentum inherent to light beams with a helical wavefront can be transferred to nonisotropic lenses by inverting one transverse direction of the mode function and the corresponding transfer of angular momentum shows up directly as a frequency shift 2mΩ when the lens system is set in rotation at frequency Ω around the axis.

TL;DR: In this paper, the existence of spiral-type beams with a predetermined intensity distribution was investigated by theoretical and experimental means, and a correspondence between these laser beams and a specific quantum-mechanical situation (ground states of a charged particle in a uniform magnetic field) was found.

TL;DR: This paper suggests a generalization of the Hartley transformation based on the fractional Fourier transform, coined it “fractional Hartley transform (FHT)” and additional useful transformations used for signal processing are discussed.

TL;DR: In this article, high resolution spectroscopy of the two-photon transitions 5 S 1 2 −5 D 3 2, 5S 1 2−5 D 5 2 and 5 S 2 −7 S 1 1 2 was investigated using the output from a mode-locked titanium sapphire laser.

TL;DR: By scanning a metal grid sample between two coaxial transmission line tips, the authors resolved Δx ≈ 10 μ m features using up to λ = 20 m wavelengths, achieving wavelength-relative resolution Δx λ −7 in both magnitude and phase.

TL;DR: In this article, the authors characterized the cross sections of arbitrary-shaped non-paraxial light beams by the zero, first and second order moments of the energy flux spatial distribution.

TL;DR: In this article, the concept of propagation invariance is extended to discrete-distance propagation-invariant waves, i.e., waves whose intensity distributions are periodic with propagation distance.

TL;DR: In this article, a simplified process for inexpensive fabrication of low-loss (0.1 dB/cm) glass waveguides on silicon by ultraviolet light imprinting in photosensitive, organically modified sol-gel silica glass films prepared by one-step dip-coating process is described.

TL;DR: In this article, the analysis, design and application of a Talbot interferometer in which the zero and first order beam from a grating are recombined are used to produce fringes of the same period, d, as the master grating or phase mask was described.