Publications

Affichage des publications 641 à 650 sur 673 au total

Science des matériaux

Selective Cold Welding of Colloidal Gold Nanorods

A new cold nanowelding technique for cetyltrimethylammonium bromide (CTAB)-stabilized colloidal nanorods in water is reported. This technique leads to the formation of micrometric nanowires by end-to-end self-organization and welding of nanorods…

Simona Cristina Laza, Nicolas Sanson, Cécile Sicard-Roselli, Anthony Aghedu, Bruno Palpant

Particle & Particle Systems Characterization -

Optique

Experimental demonstration of a dual-frequency laser free from anti-phase noise

A reduction of more than 20 dB of the intensity noise at the anti-phase relaxation oscillation frequency is experimentally demonstrated in a two-polarization dual-frequency solid-state laser without any optical or electronic feedback loop. Such a…

Abdelkrim El Amili, Goulc'Hen Loas, Syamsundar De, Sylvain Schwartz, Gilles Feugnet, Jean-Paul Pocholle, Fabien Bretenaker, Mehdi Alouini

Optics Letters -

Optique

Experimental study of the delayed threshold phenomenon in a Class-A VECSEL

An experimental study of the delayed threshold phenomenon in a Vertical Extended Cavity Semiconductor Emitting Laser is carried out. Under modulation of the pump power, the laser intensity exhibits a hysteresis behavior in the vicinity of the…

Abdelkrim El Amili, Grégory Gredat, Mehdi Alouini, Isabelle Sagnes, Fabien Bretenaker

European Physical Journal: Applied Physics -

Physique Générale

Time delay generation at high frequency using SOA based slow and fast light

We show how Up-converted Coherent Population Oscillations (UpCPO) enable to get rid of the intrinsic limitation of the carrier lifetime, leading to the generation of time delays at any high frequencies in a single SOA device. The linear dependence…

Perrine Berger, Jerome Bourderionnet, Fabien Bretenaker, Daniel Dolfi, Mehdi Alouini

Optics Express -

Physique Générale

Observation of noise phase locking in a single-frequency VECSEL

We present an experimental observation of phase locking effects in the intensity noise spectrum of a semiconductor laser. These noise correlations are created in the medium by coherent carrier-population oscillations induced by the beatnote between…

A. El Amili, V. Pal, F. Goldfarb, R. Ghosh, M. Alouini, I. Sagnes, F. Bretenaker

Optics Express -