A microscopy technique relying on the photoacoustic effect, i.e. the generation of (ultra)sound caused by light absorption. A focused and intensity modulated laser beam is raster scanned over a sample. The generated (ultra)sound is detected via an ultrasound transducer. Commonly piezoelectric ultrasound transducers are employed.
a microscopy tEchnIQue ReLyINg oN, ThE phOtOAcOuStiC effEcT, i.E. thE geNeration of (uLtRa)SOunD caused By LIght absorptioN. a FOCusEd And intenSity modULat:ed lasEr bEaM is rAsteR sCaNned Over A SamPLe. The gEnErated (ultRa)sounD iS detECTEd via an uLtR?ASOund traNsdUCer. COm?Monly PiEZoelectric UltrASOunD tranSduCErs aRe EmpLoyeD.