Raman spectroscopy is the use of inelastic scattering of light to probe various properties of molecules and materials. Incoming photons interact with the electron cloud of the molecular bonds and inelastically scatter. During this scattering the energy of the incoming photon is shifted to red or blue depending on the particular process. This phenomenon is called Raman scattering and was discove...

It is well known that scattering lidars, i.e., Mie, aerosol-wind, Rayleigh, high-spectral-resolution, molecular-wind, rotational Raman, and vibrational Raman lidars, are workhorses for probing atmospheric properties, including the backscatter ratio, aerosol extinction coefficient, temperature, pressure, density, and winds. The spectral structure of molecular scattering (strength and bandwidth) ...

In 1976 Byer proposed using stimulated rotational Raman scattering in hydrogen gas as an efficient method of frequency conversion in the infrared.' In particular, it was noted that stimulated Raman scattering in para-H 2 gas with a CO2 laser pump generates 16-gm radiation, which is of potential use for UF 6 isotope enrichment. It was subsequently learned that others have also suggested stimulat...

We report the optical injection modulation of semiconductor lasers by intra-cavity stimulated Raman scattering. This mechanism manifests itself as sharply enhanced modulation bandwidth in InAs/InGaAlAs/InP quantum-dash lasers when the injected photons are 33 +/- 3 meV more energetic than the lasing photons. Raman scattering measurements on the quantum-dash structure and rate equation models str...

We report on Raman scattering in nanostructures with InP quantum dots in an In0.48Ga0.52P matrix embedded in an In0.48Al0.52P waveguide. At resonant excitation with the quantum dot excitons, broad Raman peaks corresponding to acoustic and optical vibrations were observed. Their polarization was studied for in-plane propagation of the exciting and scattered light in forward scattering geometry. ...

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Available online 11 January 2010

1 University of Applied Sciences Salzburg, Markt 136a, 5431 Kuchl, Austria 2 University of Salzburg, Department of Materials Research and Physics, Hellbrunnerstraße 34, 5020 Salzburg, Austria 3 University of Applied Sciences Upper Austria, Stelzhamerstraße 23, 4600 Wels, Austria 4 Paracelsus Medical University Salzburg, Strubergasse 21, 5020 Salzburg, Austria 5Medical University of Vienna, Karl...

Physics) EXPERIMENTAL REALIZATION OF A TWO-PHOTON RAMAN LASER by