DISPOSITIF ET PROCEDE DE MESURE D'UN ECHANTILLON PAR SPECTROSCOPIE PAR CORRELATION

摘要

The invention concerns a device and a method for measuring a sample (2) by correlation spectroscopy. The device comprises a confocal microscope (1) including a focusing optical system (4) whereof the field (7) defines a collecting volume (9). A light source (10) produces an excitation beam (8) which is reflected towards means (11) for directing it on the sample (2) through the microscope. The measuring device also comprises means for detecting (14) the intensity of the light flux (13) produced by the interaction of the excitation beam (8) on the sample and collected by the microscope and means for processing (15) the signal produced by the detection means (14). A photonic structure (24) increasing the collected light flux (13) is arranged at the focal point (7) of the microscope focusing optical system (4) or combined with said focal point (7) by an optical element (29) to form interference bands (25) in the collecting volume (9).