The invention relates to a method and an apparatus for measuring spectral responsivity of IR optical detectors irradiated with ionising radiation. The claimed method consists in measuring simultaneously, on two channels, the spectral responsivity for both a standard detector and a detector whose spectral responsivity is to be determined, such that all the possible perturbations influence, identically and simultaneously, the two measuring channels, in view of the common rejection of these perturbing signals.
The invention relates to a process for designing magneto-optical glasses with zero Verdet constant for manufacturing lenses free of aberration upon operation in magnetic field.
The invention relates to a device for injecting precursors as gases/vapours, used in a laser pyrolysis installation for obtaining nanoparticles/nanostructures.