We experimentally study the response of an injection-locked quantum dot semiconductor laser in the excitable regime to perturbations from an external, incoherent laser. We show that excitable pulses may be triggered both for perturbation wavelengths close to that of the quantum dot device and wavelengths detuned even by a few tens of nanometers.

X-ray photoelectron diffraction is a powerful tool for determining the structure of clean and adsorbate-covered surfaces. Extending technique into ultrafast time domain will open door to studies as diverse direct determination electron-phonon coupling strength in solids mapping atomic motion surface chemical reactions. Here we demonstrate time-resolved using ultrashort soft x-ray pulses from fr...

B. Forestier, A. Houard, I. Revel, M. Durand, Y.B. André, B. Prade, A. Jarnac, J. Carbonnel, M. Le Nevé, J.C. de Miscault, B. Esmiller, D. Chapuis, and A. Mysyrowicz 1 Laboratoire d’Optique Appliquée, ENSTA ParisTech, Ecole Polytechnique, CNRS, Palaiseau, 91761, France 2 EADS France, Innovation Works, France 3 CILAS, Laser sources development and Industrialization, Orléans, France 4 ASTRIUM, Sp...

Brief high-power laser pulses applied onto the hairy skin of the distal end of a limb generate a double sensation related to the activation of Aδ- and C-fibres, referred to as first and second pain. However, neurophysiological and behavioural responses related to the activation of C-fibres can be studied reliably only if the concomitant activation of Aδ-fibres is avoided. Here, using a novel CO...

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In this paper we present the performance analysis of two nite queues coupled by a triggering scheduler Customers waiting for service have rst to pass the scheduler and then experience service by their dedicated server The scheduler is permitted to gather a custo mer from a particular queue only if the corresponding server is idle An application of this model can be found in job shop like manufa...

Optical feedback is an efficient way to narrow and stabilise semi-conductor lasers. As a step forward for ultra-stable, yet highly tunable sources, we developed new prototype of three-mirror V-shaped optical cavity (VCOF). It made precisely machined Zerodur spacer, that holds 3 contacted mirrors forming high finesse cavity. This arrangement allows the resonant light be sent back seeding laser, ...

Time-resolved studies have so far relied on rapidly triggering a photo-induced dynamic in chemical or biological ions molecules and subsequently probing them with beam of fast moving photons electrons that crosses the studied samples short period time. Hence, time resolution signal is mainly set by pulse duration pump probe pulses. In this paper, we propose different approach to problem has pot...