The United States Government As Represented by the Department of Veterans Affairs

Other

Centre National De La Recherche Scientifique

Institut National De La Sante Et De La Recherche Medicale

Université Paris Descartes

Universite Paris Cité

Université René Descartes (paris V)

Valentina Emiliani

Cha-Min Tang

Peter Pennefather

Eirini Papagiakoumou

Marc Guillon

Dimitrii Tanese

Marcel Lauterbach

Emiliano Ronzitti

Nicolò Accanto

The present invention concerns an optical system for spatiotemporally shaping the wavefront of the electric field of a light beam () to be projected into a target volume (), where the propagation axis is axis z, to create 3D patterned illumination in the target volume (), comprising a pulsed laser source, configured to have an illumination pattern whose transversal surface at the target volume being superior to the diffraction limit of the optical system, at least one intermediate optical element () which is a dispersive grating for performing temporal focusing of the light beam (), located, on the propagation axis (z), where an image of the illumination pattern is formed, for modulating the phase and/or the amplitude of the electric field of the light beam, and a second optical element () which is a spatiallight modulator for modulating the phase of the electric field of the input light beam, and for realizing spatiotemporal multiplexing to create 3D patterned illumination in the target volume () by replicating the illumination pattern, so as to have several replicated illumination patterns in the target volume (), and controlling the position with transversal coordinates X, Y and axial coordinate Z of each replicated illumination pattern in the target volume ().

Optical system for spatiotemporal shaping the wavefront of the electric field of an input light beam to create three-dimensional illumination

Systems and methods are provided that combine an amplitude modulation SLM with a phase modulating SLM in the same optical illumination system. The combination of the amplitude modulation SLM and the phase modulation SLM allows the optical illumination to compensate for the limitations of amplitude modulation SLM by using phase modulating SLM and conversely to compensate for the limitations of phase modulation SLM by using amplitude modulating SLM.

Optical illumination system

The invention concerns an optical system () comprising:

Optical system comprising a spatial light modulator

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Paris, France

Valentina Emiliani