Vibrational dephasing of self-assembling monolayer on gold surface

Observation of gold electrode surface response to the adsorption and oxidation of thiocyanate in acidic electrolyte with broadband sum-frequency generation spectroscopy

“…Our BB-SFG setup is based on a fs Ti:sapphire laser system [29,30,35]. A portion of the output of a fs laser system (Legend Elite Duo) pumps an optical parametric amplifier (OPA) followed by different frequency generation (DFG) to produce the broadband IR (150 fs, 160 cm À1 FWHM).…”

“…In broadband SFG (BB-SFG), the NR contribution from the metal surface appears as a broadband peak which represents the spectral profile of the input IR pulse [29][30][31]. Thus, it is more intuitive to observe the metal NR contribution at different surface potentials and adsorption/desorption of surface species.…”

Investigation of the Electronic Structure of CdS Nanoparticles with Sum Frequency Generation and Photoluminescence Spectroscopy

“…The SFG signal can be enhanced when the incident or signal radiation is in resonance with the electronic transitions of the media . By tuning the vis wavelength, the SFG intensities would possibly map the electronic structures of the targeted surfaces. , The SFG spectra for CdS NPs originate mainly from their surface atoms and give the information of their local density of states. , New spectral bands which may not present in the UV–visible absorption spectrum can be observed. Figure displays the wavelength-dependent SFG intensities.…”

“…41 By tuning the vis wavelength, the SFG intensities would possibly map the electronic structures of the targeted surfaces. 29,42 The SFG spectra for CdS NPs originate mainly from their surface atoms and give the information of their local density of states. 24,27 New spectral bands which may not present in the UV−visible absorption spectrum can be observed.…”

“…Details of the BB-SFG were described previously. − Briefly, tunable fs IR and ps visible (vis) pulses were focused onto the sample by a parabolic mirror at 60° incident angle, and the SFG signal was collected at the phase-matching direction. All spectra were recorded in PPP polarization combination.…”