Commissariat a L'energie Atomique

Claude Rouyer

Jérôme Neauport

Nathalie Blanchot

Arnold Migus

Christian Sauteret

Daniel Husson

Jacques Sauteret

Fabrice Raoult

A method of adjusting the pupil delay compensation of a convergent or divergent beam that includes placing a device composed of an afocal system comprising one or more passive optical components disposed on the propagation axis of the beam, at least one of the components being a focusing diffractive component, and moving the device along the propagation axis of the beam until the required pupil delay compensation is obtained, where the compensation is the algebraic sum of pupil delays of each passive optical component of the afocal system and lying in a range of values the limits of which are functions of the particular combination of the optical components chosen to form the afocal system of the compensation device.

Method of adjusting the compensation for pupil delay in a convergent or divergent beam

An optical process for the programmable time profile shaping of quasi-monochromatic optical pulses, involves the following steps: (1) spectral components of a wide spectrum pulse are spread out over time, and a stretched pulse with frequency drift is obtained, while conserving spectral width; (2) the pulse is spectrally shaped and, as a consequence, time shaped; and (3) the wide spectrum is converted into a narrow spectrum, while conserving time shaping.

Procedure and device for the programmable time profile shaping of quasi-monochromatic optical pulses

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Cestas, France

Claude Rouyer