When an incident photon interacts with a crystal lattice or molecule, it can be scattered either elastically or inelastically. Predominantly, light is elastically scattered (i.e.the energy of the scattered photon is equal to that of the incident photon). This type of scattering is often refer...
Raman scattering; in other words, the signal is amplified by the pump. The signal and pump powers along the fibre are described by the coupled equations as dS(z) - -aS(z) + P(z)S(z) + ho,, 2A 0) (1) ~- dz 2A where P(z) and S(z) denote the pump and the signal powers...
KathrinSpendier,PHYC/ECE568Termpaper RAMANSCATTERINGANDTHECONTINOUSWAVE SILICONRAMANLASER Introduction Scatteringofopticalradiationbymaterialsisatopicthathasreceivedmuchattentionoverthe past100years.Oneparticulartype,Ramanscattering,wasfirstobservedbyC.V.Ramanin 1928,andsincethenthisinelasticscatteringprocesshasfoundmany...
Graphene-enhanced Raman scattering (GERS) on isotopically labelled bilayer and a single layer of pristine and partially hydrogenated graphene has been studied. The hydrogenated graphene sample showed a change in relative intensities of Raman bands of Rhodamine 6 G (R6G) with different vibrational en...
Coherent Raman scattering (CRS) techniques are recognized for their ability to induce and detect vibrational coherences in molecular samples. The generation of coherent light fields in CRS produces much stronger signals than what is common in incoherent
Govind P. Agrawal, in Guided Wave Optical Components and Devices, 2006 2.1 Raman Gain Spectrum The most important parameter characterizing Raman amplifiers is the Raman gain coefficient γR, which is related to the cross-section of spontaneous Raman scattering [7]. It describes how the Stokes pow...
Raman scattering spectra and molecular conformations of bis(quaternaryammonium bromide)-water systems[J]. ColloidPolym. Sci., 1999, 277: 306-317.Hattori N, Hara M, Okabayashi H, et al.Raman scattering spectra and molecular conformations of bis ( quaternary ammoni- um bromide ) - water systems...
A generalization of the Raman scattering (RS) spectrum, the Raman excitation map (REM) is a hyperspectral two-dimensional (2D) data set encoding vibrational spectra, electronic spectra and their coupling. Despite the great potential of REM for optical sensing and characterization with remarkable sensi...
An alternative is to use a triple monochromator, namely a spectrometer possessing three gratings, in which the first two work as a filter to remove the Rayleigh radiation. This system allows to cut the elastic scattering signal very precisely and thus measures the spectrum almost down to the ...
In 1928, physicist C. V. Raman, published a paper inNature, titled, “A new type of secondary radiation”37. Subsequently, he won the Nobel Prize in physics for Raman scattering in 1930. Since then, the phenomenon of Raman scattering has been extensively and deeply studied, and many new ...