The original spectral hole-burning spectroscopy is implemented to study homogeneous broadening of optical transitions at 1.55 μm in two different kinds of nanosystems. For GaN/AlN quantum dots, our experiment makes up the first direct measurement of the homogeneous linewidth of the s − pz intraband transition. The square-root dependence of the differential transmission signal with the incident pump power reveals the importance of Auger scattering in population relaxation dynamics. The homogeneous spectral profile turns out to be gaussian. The strong increase of homogeneous broadening between 5K and 30K suggests different dephasing mechanisms other than phonon-coupling. In the case of carbon nanotubes, our experimental setup allows us to stu...
We present a thorough analysis of one- and two-color transient absorption measurements performed on ...
Les propriétés optiques de nanotubes de carbone sont décrites idéalement parla physique d’un objet u...
Cette thèse est consacrée à l'étude expérimentale par spectroscopie pompe-sonde femtoseconde des pro...
La technique originale de spectroscopie par saturation d absorption, dite hole-burning spectral, est...
International audienceWe present a review on the excitonic homogeneous linewidth, with an emphasis o...
The one-dimensionality of carriers in single-wall carbon nanotubes results in strong Coulomb interac...
International audienceGaN/AlN quantum dots are semiconductor nanostructures where the huge conductio...
PosterWe present homogeneous linewidth measurements of the intraband transition at 1.55 m in GaN/AlN...
Single-walled carbon nanotubes (SWNTs) are often considered the prototypical nanomaterial with their...
International audienceWe report on original nonlinear spectral hole-burning experiments in single wa...
International audienceIn this paper, we will present a brief review of linear and nonlinear optical ...
We discuss how excitons can affect the generation of coherent radial breathing modes in the ultrafas...
The optical properties of carbon nanotubes are ideally described by the physicsof a one-dimensional ...
We have studied ultrafast spectral diffusion (SD) within exciton bands of semiconducting single-wall...
We studied the temperature and excitation intensity dependence of exciton luminescence in individual...
We present a thorough analysis of one- and two-color transient absorption measurements performed on ...
Les propriétés optiques de nanotubes de carbone sont décrites idéalement parla physique d’un objet u...
Cette thèse est consacrée à l'étude expérimentale par spectroscopie pompe-sonde femtoseconde des pro...
La technique originale de spectroscopie par saturation d absorption, dite hole-burning spectral, est...
International audienceWe present a review on the excitonic homogeneous linewidth, with an emphasis o...
The one-dimensionality of carriers in single-wall carbon nanotubes results in strong Coulomb interac...
International audienceGaN/AlN quantum dots are semiconductor nanostructures where the huge conductio...
PosterWe present homogeneous linewidth measurements of the intraband transition at 1.55 m in GaN/AlN...
Single-walled carbon nanotubes (SWNTs) are often considered the prototypical nanomaterial with their...
International audienceWe report on original nonlinear spectral hole-burning experiments in single wa...
International audienceIn this paper, we will present a brief review of linear and nonlinear optical ...
We discuss how excitons can affect the generation of coherent radial breathing modes in the ultrafas...
The optical properties of carbon nanotubes are ideally described by the physicsof a one-dimensional ...
We have studied ultrafast spectral diffusion (SD) within exciton bands of semiconducting single-wall...
We studied the temperature and excitation intensity dependence of exciton luminescence in individual...
We present a thorough analysis of one- and two-color transient absorption measurements performed on ...
Les propriétés optiques de nanotubes de carbone sont décrites idéalement parla physique d’un objet u...
Cette thèse est consacrée à l'étude expérimentale par spectroscopie pompe-sonde femtoseconde des pro...