Showing papers in "Optical Materials in 1996"

TL;DR: In this article, the linear and nonlinear optical properties of KBBF crystal were carried out and the Sellmeier's equations, which are accurate from 1.4 μm to about 180 nm, were reported.

TL;DR: In this article, a comparison of six sodalime and alkali-borosilicate glasses implanted with Er to concentrations as high as 1.4 × 1021 at/cm 3.54 l~m, due to the 4113/2 ~ 4It5/2 transition in Er 3+ are observed.

TL;DR: In this article, the optical properties of L-alanine crystals grown from aqueous solution using the well-known slow evaporation method were reported, including absorption spectra and refractive indices, as well as nonlinear properties of second harmonic generation, such as phase-matching loci and efficiency.

TL;DR: In this paper, the authors measured fluorescence spectra and measured the lifetime of yttria (Y2O3) single crystals doped with only Tm3+ or Pr3+ ions or codoped with Yb3+, Tb3++ or Ho3+ ion.

TL;DR: In this article, the authors studied the optical absorption and emission properties of Tb 3+ ions in novel fluorophosphate glasses and found that the decay is single-exponential whatever the terbium concentration which can be as large as 36 mol%.

TL;DR: In this article, rate equations formalism is used to predict the population ratio of the Er3+ 4I132 levels involved in the 1.55 μm laser transition in the Yb:Er:CAS laser materials.

TL;DR: In this article, the spectroscopic behavior of the Er3+ ion in two lead silicate glasses containing different concentrations of PbO was investigated and it was shown that upconversion occurs via the sequential absorption of photons from the metastable 4I13/2 state.

TL;DR: In this article, a double exponential function with lifetimes of 0.41 ms and 2.12 ms was found for photoluminescence excitation spectroscopy between 700 and 860 nm, suggesting that the transfer of energy from the pump source to the erbium ions is mainly via the recombination of electron-hole pairs.

TL;DR: The polarized absorption and luminescence properties of Nd3+ doped isostructural LiNbO3 and LiTaO3 nonlinear bulk single crystals are reported in this paper.

TL;DR: In this article, a transparent Er3+-doped ZrF4-based fluorine glass was obtained with the particular property of having the Er3 active ion only within the single microcrystalline phase.

TL;DR: In this article, experimental results are presented on the fabrication of silica-titania sol-gel films and on their laser densification, a technique which may be very useful for rapid circuit prototyping Transversally multimode waveguides with propagation loss around 1 dB/cm have been produced by selective densification using a CO2 laser.

TL;DR: In this article, the bulk bismuth aluminate Bi2Al4O9 and gallate Bi2Ga4O 9 scintillative crystals have been grown from a high temperature self-flux solution adopting a top seeded technique.

TL;DR: In this article, an analysis of the three-level model for avalanche upconversion in the steady state case is presented, where the population of the upper level is studied with respect to the ratio between nonresonant and resonant absorptions.

TL;DR: In this paper, a FTIR-shutter based on the principle of frustrated total internal reflection was studied as an active Q-switch for 3 μm lasers, which consists of two truncated YAG crystal prisms with a small air gap between them.

TL;DR: The optical properties in the uv-visible region of epoxy glass composite containing 0, 15, 35 and 55% by weight glass microballoons are reported in this article.

TL;DR: In this article, the authors investigated the spectroscopic properties of trivalent praseodymium (Pr 3+ ) doped SrLaGa 3 O 7 (SLG) crystals at various temperatures.

TL;DR: In this paper, the optical properties of a-Ga20Se80−xSbx thin films have been studied, where x = 0, 5, 10, 15, and 20.

TL;DR: In this article, the use of nickel phthalocyanine (NiPc) as the semiconductor in Schottky barrier photovoltaic devices was reported, and the effect of incorporating tetracyanoquinodimethane (TCNQ), a strong electron acceptor, in the NiPc structure to enhance the conductivity was reported.

TL;DR: In this article, the absorption spectrum was deconvoluted into several bands which can be assigned to GeS4 and GaS4 tetrahedra vibrations and the experimentally found oscillator strengths calculated from absorption spectra lies between those of Pr doped halide and chalcohalide glasses.

TL;DR: In this article, the low-temperature electrochemical deposition of GaSb and InSb semiconductors from aqueous electrolytes has been investigated and the type of substrate used was seen to affect the stoichiometry of the deposits.

TL;DR: In this article, the structural and optical properties of thin films of Cd 1− x Zn x Te (0 ≤ x ≤ 1) have been studied using two-source vacuum evaporation technique on Corning 7059 glass substrates.

TL;DR: In this paper, the effect of glass network formers and glass modifiers on the optical properties of Tm3+:LBO glasses is discussed and the absorption linestrengths are measured.

TL;DR: In this article, the non-Gaussian profiles of the absorption and fluorescence lines have been analyzed and the existence of energy transfers between the Nd ions inside the matrix has been deduced.

TL;DR: In this paper, photoinduced changes in methyl orange/polyimide layers are investigated by dichroic, holographic and z-scan measurements, and a substantial difference between the erasure kinetics of scalar and polarization holographic recording is demonstrated.

TL;DR: In this paper, changes of the acousto-optical quality coefficient in the olygoether(meth)acrylate photopolymers of different chemical contents were investigated on their temperature dependence.

TL;DR: In this article, the authors investigated the UV absorption and luminescence in bulk samples of silicon oxynitride prepared by a hydrogen-free SPCVD-process (surface plasma chemical vapour deposition).

TL;DR: In this paper, the all-trans retinal of the native chromoprotein of bacteriorhodopsin (BR) purple membrane was replaced with the synthetic 4-keto retinal.

TL;DR: In this article, a comparative study of the use of Cr 4+ -doped YAG, YSGG and LuAG (Lu 3 Al 5 O 12 ) as saturable absorbers for the 1.06 μm emission of Nd:YAG laser has been conducted.

TL;DR: In this paper, a second band was found in thionin doped silicate gels containing over 50% methyltrimethoxysilane (MTMS) and the absorption and fluorescence spectra were found to reside at 560 nm and 665 nm, respectively.

TL;DR: In this article, the Stark level structure of the Pr3+ manifolds was determined and the peak excited state absorption cross sections were estimated to be 0.8-1.2 × 10−18 cm2.