The infrared and Raman spectra of the pyrite-type crystal MnS2 are reported. Nine of the ten optically allowed q≌0 phonons are observed. A comparison of the phonon frequencies with those of FeS2 allows us to conclude that the electrostatic forces as well as the covalent sulfur-sulfur bonds ...
59655 Villeneuve d'Ascq, France; FL.Constantin@univ-lille1.fr Received: 1 September 2017; Accepted: 6 October 2017; Published: 12 October 2017 Abstract: A double resonance two-photon spectroscopy scheme is discussed to probe jointly rotational and rovibrational transitions of ensembles of trapped HD...
Information on the refractive indices of any photonic material in a broad spectral region is of particular importance for the precise design of highly sophisticated waveguiding structures. In our case, this concerns the refractive indices of the silk fibroin in visible and infrared spectra, but such...
The zero material dispersion wavelengths (ZMDW) of ChG glasses are always located at long wavelengths. For example, the ZMDW of As2Se3 glass is ~8 µm, and that of As2S3 is 5 µm [62]. Depending partly on material dispersion, the ZDWs of ChG step-index fibers also lie in ...
nanomaterials Article Near-Infrared Surface-Enhanced Raman Scattering on Silver-Coated Porous Silicon Photonic Crystals Marko Škrabic´ 1,2, Marin Kosovic´ 3, Marijan Gotic´ 2,4, Lara Mikac 2,4, Mile Ivanda 2,4,* and Ozren Gamulin 1,2,* 1 Department of Physics and Biophysics, ...
The last 15 years, UV, Visible, Infrared, Raman, and hyper-/multi-spectral imaging methods have been used thoroughly to investigate possible relationships between spectra and microbial populations. The ultimate goal of such research efforts is the development of methods that will allow for the ...