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Q-Switches (french article)

Les lasers dits Q-switchés occupent une large place dans la famille des lasers impulsionnels. Cette technique de génération d’impulsions permet en effet d’obtenir de fortes puissances crêtes, indispensables dans de…

Quantum Dot Photon Statistics

We present an instrument for performing correlation spectroscopy on single fluorescent particles while tracking their Brownian motion in three dimensions using real-time feedback. By tracking CdSe/ZnS quantum dots in water…

Double-pass acousto-optic modulator system

A practical problem that arises when using acousto-optic modulators sAOMsd to scan the laser frequency is the dependence of the beam diffraction angle on the modulation frequency. Alignment problems with…

Optical phase Shifting in AOM

A novel optical phase-shifting method based on a well-known acousto-optic interaction is proposed. By using a pair of acousto-optic modulators (AOMs) and properly aligning them, we construct an optical phase…

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