Context . In the near future, high spatial and spectral infrared (IR) data of star-forming regions obtained by James Webb Space Telescope may reveal new solid-state features various species, including more intriguing classes chemical compounds. The identification complex organic molecules (COMs) in upcoming will only be possible when laboratory IR ice spectra these species under astronomically ...

Photorefractive ~PR! polymers are promising for use in various applications that require fast response times. The main factors that determine the PR speed in polymers are photoconductivity and chromophore reorientation in an electric field. In this article, we investigate the chromophore reorientational dynamics in various PR composites using the electric field second harmonic generation ~EFISH...

OSDR-techniques based on local phase pertubation induced by IRor UV-laser radiation are used for spatial characterization of fiber Bragg gratings. Experimental results are in good agreement with those obtained by the side-diffraction technique. Both techniques are compared with respect to simplicity of the setup and the yield of information. Fiber Bragg gratings (FBGs) are widely used for telec...

Due to its excellent thermal, mechanical, and optical properties, sapphire is one of the most suitable material for integrated optical devices. Although this hard crystalline material is particularly difficult to process, fabrication of Ti-doped sapphire surface channel waveguides by surface structuring [1,2] of planar waveguides or ion in-diffusion [3] has been demonstrated. Generally, device ...

Let ∅≠Ŕ,Ś be subsets of a partial metric space (Ω,ϑ) and Ψ:Ŕ→Ś mapping. If Ŕ∩Ś=∅, it cannot have solution equation Ψς=ς for some ς∈Ŕ. Hence, is sensible to investigate if there point ἣ satisfying ϑ(ἣ,Ψἣ)=ϑ(Ŕ,Ś) which called best proximity point. In this paper, we first introduce concept Hausdorff cyclic mapping pair. Then, revise the definition 0-boundedly compact on spaces. After that, give re...