Hydrogen incorporation in silicon layers prepared by plasma-enhanced chemical-vapor deposition using silane dilution by hydrogen has been studied by infrared spectroscopy ~IR! and elastic recoil detection analysis ~ERDA!. The large range of silane dilution investigated can be divided into an amorphous and a microcrystalline zone. These two zones are separated by a narrow transition zone at a di...

We present the results of testing previously proposed method for identifying species archaeological wood materials by single-reflection attenuated total reflectance IR spectroscopy. The region 1270–1220 cm–1, in which two bands different intensities were found, is most promising samples. In spectra coniferous wood, a more intense band located at approximately 1265 and deciduous species, 1230 cm...

We demonstrate a coherent vibrational spectroscopy based on molecular infrared (IR)-active resonance. apply two femtosecond pulses (one in near-IR and the other mid-IR) to generate femtos...