Consiglio Nazionale Delle Ricerche

Politecnico Di Milano

Cristian Angelo Manzoni

Giulio Cerullo

Dario Polli

Giulio Nicola Felice Cerullo

Gianluca Valentini

Fabrizio Preda

Andrea Bassi

Antonio Perri

Daniele Brida

A Fourier-transform hyperspectral imaging system may include an optical imaging system configured to produce an image of an object, and an adjustable birefringent common-path interferometer module comprising a movable birefringent element and configured to produce interfering replicas of an input radiation which are delayed from each other by a phase delay adjustable by the moving birefringent element. The interferometer module may be configured to produce collinear replicas for entering optical rays parallel to said optical axis. The hyperspectral imaging system further comprises a two-dimensional light detector configured to receive the replicas and provide digital images of the object depending on said adjustable phase delay. The system also includes an analysis device configured to perform a Fourier Transform of the digital images to obtain a hyperspectral representation of the object.

Fourier-transform hyperspectral imaging system

A phase-locked delay device, including: an input port configured to receive an input electromagnetic radiation pulse; said input pulse being to be propagated along a propagation direction and having a first linear polarization different from both a first direction, which is orthogonal to the propagation direction, and a second direction, which is orthogonal to the first direction and the propagation direction; an adjustable Babinet-Soleil module optically coupled to said input port, having a first polarization direction parallel to said first direction. The adjustable Babinet-Soleil module is structured to: provide from the input pulse a first pulse polarized along the first direction and a second pulse collinear to said first pulse and polarized along the second direction, and introduce an adjustable group delay between the first pulse and the second pulse ranging from a minim value &#x394;Tand a maximum value &#x394;T; the maximum value &#x394;Tbeing a value greater than 10 fs.

Phase-locked delay device including an optical wedge pair

Growing community of inventors

Bergamo, Italy

Cristian Angelo Manzoni