Publication
Plasmon-less surface enhanced Raman spectra induced by self-organized networks of silica nanoparticles produced by femtosecond lasers
Publications associées (36)
Modifying the properties of 4f single-ion magnets by peripheral ligand functionalisation
We study the ligand-field splittings and magnetic properties of three Er-III single-ion magnets which differ in the peripheral ligand sphere but exhibit similar first coordination spheres by inelastic neutron scattering (INS) and SQUID magnetometry. The IN ...
Royal Soc Chemistry2014Nanostructuring and lattice dynamics of materials by femtosecond lasers
Physically, the colour of an object is a complex result of its intrinsic surface properties, its transmission properties and its emission properties, all of which contribute to the mix of wavelengths in the light leaving the surface of the object. Structur ...
EPFL2013Nanograting Orientation Influence on Stress Induced by Femtosecond Laser in Fused Silica
Under certain conditions, femtosecond lasers can be used to introduce self-organized nanogratings in the bulk of fused silica. Here, we report that the nanogratings orientation influences the induced stress distribution around laser affected zones. ...
IEEE2013Density variation in fused silica exposed to femtosecond laser
Fused silica (a-SiO2) exposure to low-energy femtosecond laser pulses leads to interesting effects such as a local increase of etching rate and/or a local increase of refractive index. Up to now the exact modifications occurring in the glass matrix after e ...
IEEE2012Analysis of the low-frequency spectrum of the cubic noncentrosymmetric ferrimagnet Cu2OSeO3
The IR reflectance spectra of the cubic noncentrosymmetric ferrimagnet Cu2OSeO3 (T-C approximate to 60 K) were investigated in the temperature range 10-80 K. Detailed analysis of the symmetry and composition of vibrational modes was conducted on the basis ...
2012Impact of Raman scattering and modulation instability on the performances of Brillouin sensors
Luc Thévenaz, Stella Foaleng Mafang
The impact of Raman scattering and modulation instability is studied in Brillouin time-domain analysis systems. It turns out to be very detrimental for long-range sensing as a result of the extended interaction length combined to the high pump peak pulse p ...
SPIE2011Femtosecond laser micromachining of fused silica molds
The use of low-energy femtosecond laser beam combined with chemical etching has been proven to be an efficient method to fabricate three-dimensional structures in fused silica. For high-volume application, this technology – like other serial processes – su ...
Optical Society of America2010Coherent anti-stokes Raman holography for chemically selective single-shot nonscanning 3D imaging
Demetri Psaltis, Ho Ling Li, Kun Shi
We propose and develop a new way for nonscanning coherent anti-Stokes Raman scattering (CARS) imaging by using CARS holography, which can capture, at a single shot, both the amplitude and the phase of a coherent Raman image. It hence allows for chemically ...
2010Evidence for core-hole-mediated inelastic x-ray scattering from metallic Fe1.087Te
Henrik Moodysson Rønnow, Marco Grioni, Thorsten Schmitt, Marco Guarise, Ping-Hui Lin, Dirk Van der Marel
We present a detailed analysis of resonant inelastic x-ray scattering from Fe1.087Te with unprecedented energy resolution. In contrast to the sharp peaks typically seen in insulating systems at the transition-metal L-3 edge, we observe spectra which show d ...
2010Biological samples studied by optical nanospectroscopy
The different parts of the electromagnetic spectrum result in diverse effects upon interaction with matter: according to the wavelength, the radiation has energy appropriate for the excitation of a specific physical process. X-rays can be used as a tool to ...
EPFL2009