Showing papers in "Optics Communications in 1982"

TL;DR: In this article, an optimal focussing kinematically simple two-element optics for plane grating monochromators is described, which is used to monochromeise synchrotron radiation in the soft X-ray region.

TL;DR: In this paper, the propagation of partially coherent light beams generated by gaussian Schell-model sources is characterized by two parameters that are analogous to the beam radius and the radius of wavefront curvature of fully coherent gaussian laser beams.

TL;DR: A necessary and sufficient condition for the 4 × 4 Mueller matrix to be derivable from the 2 × 2 Jones matrix is obtained in this article, which allows one to determine if a given Mueller matrix describes a totally polarized system or a partially polarized system.

TL;DR: In this paper, the authors present an analysis of the atomic reflection process and suggest that the effect can be used to trap slow atoms or to focus a slow atomic beam, which is the case in our case.

TL;DR: In this paper, the point of maximum intensity in a focused aberration-free wave is not at the geometrical focus, but is closer to the focusing lens, where the waist of the beam is assumed to be located in the aperture plane.

TL;DR: In this article, it was shown that in the process of harmonic generation in a non-linear crystal the fundamental mode becomes squeezed and when the squeezing is detected in the usual way by interference with a coherent field, the resulting field shows photon statistics that are narrower than poissonian by the same amount as the photons of the fundamental modes.

TL;DR: In this article, the fabrication and characterization of optical waveguides realized in LiNbO 3 by a combined titanium indiffusion proton exchange (TIPE) process is described.

TL;DR: In this paper, it was shown that a phase volume hologram in a photorefractive crystal exists in the form of relaxing running wave, and that effective recording of such a running hologram is possible only by an interference pattern moving synchronously with the recorded grating.

TL;DR: In this paper, it is shown that the point of maximum intensity may not be at the geometric focus of the incident wave, but may be located closer to the aperture, and the result is interpreted as the combined effect of diffraction and the inverse square law.

TL;DR: Atomic oxygen has been detected in a lean acetylene/oxygen flame using the 2p43P2-2p33p3P two-photon transition at 226 nm and fluorescence detection at 845 nm.

TL;DR: In this article, an improved phase measurement system for real-time holographic interferometry is described, which uses a diode array television camera to view the interference pattern, and digital electronics to calculate and store the phase difference at a 100 × 100 grid of points.

TL;DR: Three optical methods are proposed for the production of the Wigner distribution function (WDF), which offers an alternative way of representing signals that depends simultaneously on time (or space) and on frequency.

TL;DR: In this article, a line-focusing Q-switched Nd: YAG laser pulses are projected onto metal surfaces with a cylindrical lens, and the resulting ultrasonic frequency components of the resultant Rayleigh waves are shown to be emitted preferentially broadside from the line-source in narrow beams.

TL;DR: In this paper, it was shown that the maximum reduction of fluctuations that can be obtained in a degenerate parametric amplifier at steady state is by a factor of two, whatever is the ratio between the damping states γ 2 and γ 1 of the two modes which interact in the cavity.

TL;DR: In this article, a new spectroscopic method to detect saturated absorption signals was proposed, which is based on a high frequency modulation of the saturation beam and a detection of the induced modulation of probe combined with a frequency offset of saturation beam.

TL;DR: In this article, the excitation of three-level lambda-systems by two laser fields leads to population trapped in two-photon resonant superpositions and to narrow Raman resonances.

TL;DR: Using two reference sources close together, the sensitivity to (angular) misalignement of the hologram is drastically reduced (10° instead of 0.01°), unless extreme precision and spatial resolution are demanded as discussed by the authors.

TL;DR: In this article, a nonlinear ring resonator pumped symmetrically by two beams of equal intensities and opposite directions was considered and it was shown that this system is characterized by a new directionally asymmetrical regime of multistability.

TL;DR: In this paper, the single pass dispersion of multiple-prism beam expanders of interest for practical pulsed dye laser cavities is calculated and the theory is extended to enable evaluation of the overall (outward and return pass) dispersion.

TL;DR: In this article, a synchronously-pumped cw dye laser using a dye medium composed of a mixture of rhodamine 6G and a fast recovery saturable absorber, DQOCI, was used.

TL;DR: In this article, the authors analyse the fluctuations at steady state in the good quality cavity case in two-photon laser with running wave and twophoton absorptive optical bistability in a ring cavity.

TL;DR: In this paper, population pulsations were shown to be responsible for both the chaotic single-wavelength instabilities of single-mode operation in unidirectional ring lasers containing homogeneously-broadened media.

TL;DR: In this paper, the counter-propagating pulses from a transient grating in the thin absorber have been found to have a down-chirp, which corresponds to a wavelength sweep during the pulse duration of about 1 nm.

TL;DR: In this paper, the operation characteristics of an acousto-optics nonlinear device are presented where the diffracted light is used to create a feedback leading to hysteresis and bistability.

TL;DR: In this paper, the authors used polarized absorption and fluorescence spectroscopies to probe fundamental interactions at interfaces both between adsorbed dye molecules and between the adsorbate and the substrate.

TL;DR: In this paper, power dependence of the far field width of an incident beam of 10.6 μm radiation, with a gaussian profile, after passage through a polished crystal of Cd 0.21 Hg 0.79 Te at 175 K has been found to be Δn = −(7.0 ± 3.5) × 10 −3 I 1 3 where I is the incident intensity in W/cm 2.

TL;DR: In this paper, the level of stray light detected near to a spectral line may be reduced either by underfilling the grating, or by using a grating with indistinct edges.

TL;DR: In this paper, measurements of laser-driven mass ablation rates were presented for wavelengths of 1.05 μm, 0.53 μm and 0.35 μm.

TL;DR: In this article, the chaotic emission from a continuous He-Ne laser, approached by oscillation period doubling, was observed and compared with the chaotic behavior of a single-beam laser.

TL;DR: In this paper, the effects of saturation and Rabi oscillations on ion yields and asymmetries in AC Stark-split photoelectron spectra were investigated and shown to lead to enhanced photoionisation rates and interference minima.