▎ 摘　　要

NOVELTY - The apparatus comprises a three-dimensional graphene structure that contains graphene sheets to receive the incident electromagnetic radiation. An electro-acoustic transducer is coupled to the graphene sponge. An evaluation unit detects the course of the intensity of the electric signal. The electro-acoustic transducer is coupled to the three-dimensional graphene structure that outputs the acoustic and ultrasonic waves. USE - Apparatus for converting incident electromagnetic radiation into acoustic and ultrasonic waves. ADVANTAGE - The apparatus comprises a three-dimensional graphene structure that contains graphene sheets to receive the incident electromagnetic radiation, where electro-acoustic transducer is coupled to the graphene sponge, and thus enables to detect the course of the intensity of the electric signal. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for converting incident electromagnetic radiation into acoustic and ultrasonic waves. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of an electromagnetic transducer.