Showing papers in "Optics Communications in 1985"

TL;DR: In this paper, the amplification and subsequent recompression of optical chirped pulses were demonstrated using a system which produces 1.06 μm laser pulses with pulse widths of 2 ps and energies at the millijoule level.

TL;DR: In this article, the stable monomode self-trapping of laser beams with adequate shape and power when they are propagating through homogeneous transparent dielectrics whose refractive index exhibits fluctuations proportional to the local intensity is demonstrated.

TL;DR: In this article, the theoretical analysis of unstationary holographic recording in photorefractive crystals under an external alternating electric field is presented, and the experimental curves for the gain factor Γ obtained in Bi12TiO20 (λ = 0.63μm) under an ac step-like field illustrate the field and spatial frequency dependencies of the hologram amplitude characteristics.

TL;DR: In this paper, a decrease of light transmission with increasing excitation intensity was observed in tetraphenylporphyrin/toluene solutions irradiated with 80 ps pulses at λ=532 nm.

TL;DR: In this paper, the zero-eth order diffraction efficiency of a three-layer dielectric grating is studied theoretically and experimentally, and the operation of the structure as a tunable narrow-band wavelength filter in a reflection regime is demonstrated.

TL;DR: In this paper, a general expression relating the delay and the angular dispersion was found, and a pulse compressor equivalent to the Treacy-compressor, based on this delay was described.

TL;DR: The third order hyperpolarizabikity of rare gases He, Ne, Ar, Kr, Xe and N 2 was determined by third harmonic generation involving picosecond light pulses of a Nd-glass laser as mentioned in this paper.

TL;DR: In this paper, the phase conjugation in two types of semiconductor-doped glasses was studied and a slow nonlinearity in agreement with the slow decay of luminescence was observed.

TL;DR: In this article, a method for continuous reconstruction of volume holograms in cubic photorefractive crystals of the sillenite family using the effect of anisotropic diffraction is presented.

TL;DR: In this paper, the second harmonic generation from a non-centrosymmetric alternating Langmuir-Blodgett film of ω-tricosenoic acid and highly polarisable merocyanine dye was investigated.

TL;DR: In this paper, the propagation of nonlinear guided waves in a slab configuration with arbitrary intensity-dependent dielectric functions is considered, and general expressions for the dispersion relations and the guided power flux are derived without explicit integration of the nonlinear Helmholtz equations.

TL;DR: In this article, the effects of harmonics, space charge and electron energy spread on the collective instability regime of an electron beam coupled to a planar undulator were analyzed and both analytical and numerical results were presented.

TL;DR: In this article, a design of laser was described which produces a modeless output giving a continuous spectral distribution and a continuously variable bandwidth, comparable to convetional laser pumped dye laser.

TL;DR: Femtosecond transform limited light pulse propagation in vacuum is described in scalar approximation of diffraction theory in this article, where evolution of the spatial and temporal characteristics of the pulse are presented.

TL;DR: In this article, an oscillatory instability followed by a subharmonics cascade and chaotic emission was observed from an optically pumped singlemode, travelling wave NH 3 -laser at 81.5 μm wavelength.

TL;DR: In this article, the phase conjugated wave reflected from a self-pumped photorefractive BaTiO3 crystal has been observed to be increased by providing optical feedback of the light scattered during grating formation.

TL;DR: In this paper, the authors proposed a nonlinear frequency conversion scheme which greatly extends the range of tunability of a tunable solid state laser by growing the active medium to a sufficient crystal size with an optical quality that allows for diffraction limited applications.

TL;DR: In this article, a traveling-wave dye laser and a mode-locked Nd:YAG laser are mixed in an AgGaS 2 crystal to generate pulses at the difference frequency.

TL;DR: In this paper, the phase conjugation is performed in a fluorescein film by a cw Ar ion laser of the wavelength 0.488 μm in a degenerate four-wave mixing (DFWM) configuration.

TL;DR: In this paper, an optical method for measuring the 2D temperature distribution in a horizontal plane of an asymmetric diffusion flame is studied using a Mach-Zehnder interferometer, which records projections of the index of refraction in the flame from eight different directions.

TL;DR: In this paper, the authors used the multiple quantum well structure (MQW) as an optical waveguide of nonlinear-optical devices, where the composition ratios of the composing compound semiconductors can provide flexibility for the design of those devices.

TL;DR: In this article, the spontaneous Raman spectra of single, optically levitated microdroplets were observed in a CW argon laser beam which also served as the Raman excitation source.

TL;DR: In this article, a small amount of hydrogen was added to the neon buffer gas in a CuBr laser to achieve a doubling of the average output power and a 1% efficiency.

TL;DR: In this article, a comparison of the spectral lines from plasmas with lengths of 1.7, 3.4, 6.8, and 13.6 mm was performed using a 3 meter spectrograph that viewed the plasma along the line focus.

TL;DR: In this article, a diagnostic technique to measure density profiles in dense plasma generated by the compression of shell targets under laser irradiation is considered, which employs projection of rays from a quasi-point pulsed X-ray source through the object with subsequent dispersion from a flat Bragg crystal.

TL;DR: In this paper, it was shown that it is possible to increase the efficiency of stationary four-wave mixing in cubic photorefractive crystals of the sillenite family by using a holographic arrangement of the cubic crystal where the same volume phase hologram has opposite contrasts for orthogonally polarized light waves traversing the sample in opposite directions.

TL;DR: A preliminary theoretical analysis of a method for the generation of light with sub-poissonian photon statistics is presented in this article, where the authors propose a method which is based on the method described in this paper.

TL;DR: In this paper, it was shown that the same dynamical phenomena for laser excitation rate and modulation of the cavity losses result in the same results for laser in which the polarization can be adiabatically eliminated.

TL;DR: In this article, the long distance properties of N = 1 and N = 2 solitons are studied for a range of loss levels and the dependence of the asymptotic dispersion on loss is investigated.

TL;DR: In this paper, a model with two atoms interacting with a single-mode quantized radiation field was studied, and the detailed quantum collapse and revivals in the system were shown.