Results 171 to 180 of about 116,825 (204)

High-power fibre Raman lasers emitting in the 1.22–1.34-μm range

Quantum Electronics, 2000
A set of diode-pumped fibre lasers producing a cw output of 4–7.5 W in the range from 1.05 to 1.15-μm is realised on the basis of an ytterbium double-cladded fibre. The output of the ytterbium fibre laser was used to pump a Raman phosphor-silicate fibre converter, resulting in fibre lasers producing a cw output power of more than 3 W at 1.26 and 1.3-μm.
Andrei S Kurkov, Evgenii M Dianov, Vladimir M Paramonov, A N Gur'yanov, A Yu Laptev, V F Khopin, A A Umnikov, N I Vechkanov, O I Medvedkov, Sergei A Vasil'ev, M M Bubnov, O N Egorova, S L Semenov, E V Pershina   +13 more
openaire   +1 more source

Stimulated backward Raman scattering excited in the picosecond range: high efficiency conversions

Optics Communications, 1991
Abstract Stimulated backward Raman scattering (SBRS) excited by picosecond laser pulses is produced with high efficiency conversion in materials displaying large Raman gain and small Kerr constants. A constant energy efficiency of 40% is obtained in aceton for a wide range of the exciting laser energy.
R. Chevalier, A. Sokolovskaia, N. Tcherniega, G. Rivoire   +3 more
openaire   +1 more source

Understanding the Resonance Raman Scattering of Donor−Acceptor Complexes using Long-Range Corrected DFT

Journal of Chemical Theory and Computation, 2010
The optical properties involving charge-transfer states of the donor-acceptor electron-transfer complexes carbazole/tetracyanoethylene (carbazole/TCNE) and hexamethylbenzene/tetracyanoethylene (HMB/TCNE) were investigated by utilizing the time-dependent theory of Heller to simulate absorbance and resonance Raman spectra.
Daniel W, Silverstein, Lasse, Jensen
openaire   +2 more sources

Raman-assisted ultralong ring fiber lasers in the femtosecond range

Fiber Lasers XIX: Technology and Systems, 2022
Inés Cáceres Pablo, Francesca Gallazzi, Concepción Pulido de Torre, Pedro Corredera Guillén, Juan Diego Ania-Castañón   +4 more
openaire   +1 more source

Raman spectroscopy of SrB4O7 single crystals in the temperature range 300–1273 K

Optics and Spectroscopy, 2016
The polarized Raman spectra of SrB4O7 (SBO) single crystals are studied in detail in the temperature range of 300–1273 K. The TO, LO, and IO phonon lines of A 1, A 2, B 1, and B 2 symmetries of rhombic SBO at 300 K are identified. The behavior of the Raman spectra of SBO crystals is studied upon heating up to their melting.
A. A. Sobol, V. E. Shukshin, A. I. Zaitsev   +2 more
openaire   +1 more source

Raman-brillouin light scattering determination of the structural correlation range in ges2 glass

Solid State Communications, 1977
Abstract Polarized Brillouin and low frequency (3 cm −1 ⩽ ω ⩽ 40 cm −1 ) Raman spectra of GeS 2 glass have been measured. Parameters determined from the Brillouin spectra have been used in the theory of Martin and Brenig to obtain from a fit of the Raman spectrum the structural correlation range, 2σ. We find 2σ = 8 ± 1 A.
R.J. Nemanich, M. Gorman, S.A. Solin
openaire   +1 more source

Ionic association: A laser-raman study in the fuoss-onsager dilute-solution range

Journal of Solution Chemistry, 1975
In this communication an investigation is reported in which ion-pair formation is sensed quantitatively by the laser-Raman technique using as the model electrolyte system solutions of AgNO3 in acetonitrile. The measurements were extended to the dilute-solution range in an attempt to intercompare the results forKa with those calculated from conductance ...
George J. Janz, Max A. M�ller
openaire   +1 more source

Raman Amplification In Optical Fibres In The Wavelength Range 1.06 To 1.36µm

SPIE Proceedings, 1985
Optical amplification by stimulated Raman emission has been observed at five discrete wavelengths using a fibre Raman laser as both signal and pumping source to the amplifier. An amplification factor of 16 dB has been observed at 1.30 μm and 3 dB at 1.36 μm for a pump power of a few tens of milliwatts.
openaire   +1 more source

Zebrafish disease models in drug discovery: from preclinical modelling to clinical trials

Nature Reviews Drug Discovery, 2021
E Elizabeth Patton, Leonard I Zon, David Langenau   +2 more
exaly  

Wide range spectroscopic applications of the CW spin-flip Raman laser

IEEE Journal of Quantum Electronics, 1974
S. Smith, R. Dennis, J. Smith, R. Butcher   +3 more
openaire   +1 more source