An optical tomographic imaging apparatus (100) comprising a first splitting unit (136 -A) configured to split a first combined beam (142-1) into a first beam (175 -Al) and a second beam (175 -A2) having different polarization directions, the first combined beam being formed by combining a return beam from an inspection object irradiated with a first measuring beam and a reference beam corresponding to the first measuring beam, a selection unit (137) configured to select either a third beam (142-2 or 175 -Bl) or the second beam, the third beam being based on a second combined beam (142-2) formed by combining a return beam from the inspection object irradiated with a second measuring beam and a reference beam corresponding to the second measuring beam, a first acquisition unit (125) configured to acquire, if the second beam is selected by the selection unit, a tomographic image indicating polarization information of the inspection object based on the first beam and the second beam, and a second acquisition unit (125) configured to acquire, if the third beam is selected by the selection unit, a tomographic image indicating a plurality of pieces of intensity information of the inspection object based on the first beam and the third beam.La présente invention concerne un appareil dimagerie tomographique optique (100) comprenant un premier diviseur (136-A), un sélecteur (137), une première unité dacquisition (125), et une seconde unité dacquisition (125). Le premier diviseur (136-A) est configuré pour diviser un premier faisceau combiné (142-1) en un premier faisceau (175-A1) et un second faisceau (175-A2) dont les axes de polarisation sont différents, le premier faisceau combiné résultant de la combinaison dun faisceau de retour provenant dun objet à examiner éclairé par un premier faisceau de mesure avec un faisceau de référence correspondant au premier faisceau de mesure. Le sélecteur (137) est configuré pour sélectionner, soit un troisième faisceau (142-2 ou 175-B1),
