Provided is an object information acquiring apparatus provided with: a laser light source； a detection unit that detects a portion of laser light emitted from the laser light source； a determination unit that determines whether or not abnormal emission is contained in the laser light, based on a detection result of the detection unit； a radiation unit that radiates the laser light onto an object； a reception unit that receives acoustic waves that propagate from the object, based on radiation of the laser light； an acquisition unit that acquires information relating to the object, based on a reception result of the reception unit； and a control unit that controls output of the laser light, based on a determination result of the determination unit.
