Alexandre Joly

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We report on the compensation of the linear anisotropy of phase in a vertical-external-cavity surface-emitting laser from 21 to 0.5 mrad with an intracavity PLZT electro-optical ceramic. It allows dynamic and accurate control of the laser linear anisotropy, as well as dynamic control of the laser polarization eigenstates. At the birefringence compensation(More)
We demonstrate a core-pumped Q-switched thulium-doped fiber laser system with fast tunability capability over 100 nm without any movable part. With up to 7 kW peak power in a diffraction-limited beam, this source is well adapted for pumping a frequency agile mid-IR parametric oscillator or amplifier based on Quasi-Phase-Match single-period crystals.
This paper presents a method to monitor audio and video quality in the context of a digital broadcasting network. Because of bandwidth limitations, most existing methods cannot be applied. A method based on the evaluation of several of the impairments typically encountered in digital MPEG audio and video signals is proposed. The method has also been(More)
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