The present invention relates to a photoacoustic sensor head for detecting acoustic signals triggered on a sample (10) through absorption of pulse measuring light (40), the photoacoustic sensor head comprising a measuring light (40) with a sample contact surface (30) ), contact prism 20 transparent, detection surface 70 disposed opposite sample contact surface 30 and light incident surface 50 and light incident surface 50 disposed adjacent to detection surface 70 A detection device 80 comprising means 60 for irradiating the measurement light 40 in the direction of the sample contact surface 30 through, the detection device 80 comprising at least one acoustic transducer covers the detection surface 70 The portion of the measurement light 40 reflected from the sample contact surface 30 is characterized in that it faces the detection surface 70 or the light incident surface 50, and absorbs the measurement light 40 A layer of material containing 90 is disposed between the detection surface 70 and the detection device 80. In addition, the present invention includes the above-described photoacoustic sensor head, a light source for the pulse measurement light 40, a device for supplying the measurement light 40 to the sensor head, a measurement data recording device of the detection device 80, and a light source. A light control device for emitting a measurement light pulse 40 of a predetermined pulse duration at a time point, the measurement device comprising a light control device and a measurement data evaluation device in communication with the measurement data recording device, the measurement data The evaluation device causes the measurement data recording device to record the measurement data of the detection device 80 only for a plurality of non-overlapping time intervals, and the time position is predetermined in relation to the time point at which the measurement light pulse 40 is emitted, and the total The interval length relates to a photoacoustic measurement de
