Results 11 to 20 of about 41,207 (287)
Raman Techniques: Fundamentals and Frontiers
Nanoscale Research Letters, 2019 Driven by applications in chemical sensing, biological imaging and material characterisation, Raman spectroscopies are attracting growing interest from a variety of scientific disciplines.
Robin R. Jones +4 more
doaj +3 more sources
Random number generation from spontaneous Raman scattering
Applied Physics Letters, 2015 We investigate the generation of random numbers via the quantum process of spontaneous Raman scattering. Spontaneous Raman photons are produced by illuminating a highly nonlinear chalcogenide glass (As2S3) fiber with a CW laser at a power well below the stimulated Raman threshold.
M. J. Collins +5 more
openaire +5 more sources
Photon-matter quantum correlations in spontaneous Raman scattering [PDF]
Physical Review A, 2020 11 pages, 7 figures ...
Kai Shinbrough +4 more
openaire +2 more sources
Time-ordering in Heisenberg’s equation of motion as related to spontaneous radiation
Scientific Reports, 2021 Despite many years of research into Raman phenomena, the problem of how to include both spontaneous and stimulated Raman scattering into a unified set of partial differential equations persists.
Benjamin D. Strycker
doaj +1 more source
Revisiting spontaneous Raman scattering for direct oxygen atom quantification [PDF]
Optics Letters, 2021 In this Letter, the counterintuitive and largely unknown Raman activity of oxygen atoms is evaluated for its capacity to determine absolute densities in gases with significant O-density. The study involves C O 2 microwave plasma to generate a self-calibrating mixture and establish accurate cross sections for
van de Steeg, A.W. +8 more
openaire +3 more sources
Frequency shifts in stimulated Raman scattering [PDF]
, 1980 The nonresonant contributions to the nonlinear susceptibility χ(3) produce a frequency chirp during stimulated Raman scattering. In the case of transient stimulated Raman scattering, the spectrum of the generated Stokes pulse is found at higher ...
Kaiser, Wolfgang, Zinth, Wolfgang
core +1 more source
Non-Intrusive Velocity Measurement of Millichannel Flow by Spontaneous Raman Imaging
Journal of Thermal Science and Technology, 2012 A non-intrusive measurement technique based on spontaneous Raman imaging was proposed for investigating microscale flow structures. It has the advantage that it does not require tracer particles or fluorescent dye to measure fluid velocity and scalar ...
Motoyuki TAKAHASHI +3 more
doaj +1 more source
Improved sensitivity gas detection by spontaneous Raman scattering [PDF]
Applied Optics, 2009 Accurate, real-time measurement of the dilute constituents of a gaseous mixture poses a significant challenge usually relegated to mass spectrometry. Here, spontaneous Raman backscattering is used to detect low pressure molecular gases. Rapid detection of gases in the approximately 100 parts in 10(6) (ppm) range is described.
Buric, MP +3 more
openaire +2 more sources
Stimulated Raman lineshapes in the large light–matter interaction limit
Optical Materials: X, 2022 Stimulated Raman scattering (SRS) represents a powerful tool for accessing the vibrational properties of molecular compounds or solid state systems. From a spectroscopic perspective, SRS is able to capture Raman spectra free from incoherent background ...
Giovanni Batignani +4 more
doaj +1 more source
Continuous-wave Raman amplification in silicon core fibers pumped in the telecom band
APL Photonics, 2021 Stimulated Raman amplification is observed for the first time in the silicon core fiber (SCF) platform. The SCFs were tapered to obtain sub-micrometer core dimensions and low optical transmission losses, facilitating efficient spontaneous scattering and ...
Meng Huang +8 more
doaj +1 more source