Backward stimulated Raman scattering in water

Tcherniega, N. V.; Sokolovskaia, A. I.; Kudriavtseva, A. D.; Barille, Régis; Rivoire, G.

doi:10.1016/s0030-4018(00)00740-9

Cited by 25 publications

(2 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At powers above 100 mW we find that the spectral hole position (the location of the minimum in the output spectrum) shifts toward shorter wavelengths; this behavior is also consistent with SRS, which converts shorterwavelength photons to longer-wavelength ones. It should be pointed out that even though SRS is a likely process to come into play first, as the laser intensity is gradually increased, many other phenomena such as thermal lensing, self-focusing, selfphase modulation, and medium ionization all become significant at somewhat higher intensities [12][13][14]. In our experiment we observe an interplay of these effects at powers above 250 mW; however, detailed investigation of these phenomena is beyond the scope of our present work.…”

Section: Experiments With Femtosecond Oscillator Pulsesmentioning

confidence: 60%

Propagation of ultrashort laser pulses in water: linear absorption and onset of nonlinear spectral transformation

et al. 2010

View full text Add to dashboard Cite

We study propagation of short laser pulses through water and use a spectral hole filling technique to essentially perform a sensitive balanced comparison of absorption coefficients for pulses of different duration. This study is motivated by an alleged violation of the Bouguer-Lambert-Beer law at low light intensities, where the pulse propagation is expected to be linear, and by a possible observation of femtosecond optical precursors in water. We find that at low intensities, absorption of laser light is determined solely by its spectrum and does not directly depend on the pulse duration, in agreement with our earlier work and in contradiction to some work of others. However, as the laser fluence is increased, interaction of light with water becomes nonlinear, causing energy exchange among the pulse's spectral components and resulting in peak-intensity dependent (and therefore pulse-duration dependent) transmission. For 30 fs pulses at 800 nm center wavelength, we determine the onset of nonlinear propagation effects to occur at a peak value of about 0.12 mJ/cm(2) of input laser energy fluence.

show abstract

Section: Experiments With Femtosecond Oscillator Pulsesmentioning

confidence: 60%

Propagation of ultrashort laser pulses in water: linear absorption and onset of nonlinear spectral transformation

et al. 2010

View full text Add to dashboard Cite

show abstract

“…Stimulated scattering in liquid is an important research topic in Physics and Chemistry [19,28,29,46,47]. SBS and stimulated Raman scattering (SRS) are two important nonlinear processes.…”

Section: Introductionmentioning

confidence: 99%

Brillouin lidar and related basic physics

et al. 2009

View full text Add to dashboard Cite

The principle of a lidar based on Brillouin scattering is introduced. The basic physics of the Brillouin lidar is discussed. The applications of the Brillouin lidar in remote sensing of the ocean, such as measurement of the sound speed and the bulk viscosity of water and detecting submerged objects are investigated. An actual Brillouin lidar system is developed. Also, several basic problems related to Brillouin lidar are studied in detail. The attenuation coefficient of a pulsed laser beam with high pulsed energy in water is investigated; it is helpful to reveal the propagation property of a laser beam in water. The investigations on the threshold value of SBS are made theoretically and experimentally. Finally, a novel phenomena is investigated experimentally, in which Stimulated Raman scattering can be enhanced by stimulated Brillouin scattering.

show abstract