The main problems and areas of application of photothermal and optoacoustic spectroscopy are summarized. The trends in the development of novel methods or in the most developing areas are discussed: microspectroscopy, multispectral methods, measurements of single particles and objects with a resolution above the diffraction limit (nanoscopy), including both optical and probe methods. The possibilities of photothermal and optoacoustic modalities for assessing the properties of materials, in photochemistry and fluorescence studies, chemical reaction monitoring, analytical and applied chemistry, as well as in solving biomedical problems are summed up. The outlooks for the development of these methods are discussed.
Keywords: photothermal spectroscopy, optoacoustic spectroscopy, photoacoustic spectroscopy, photonics, nanophotonics, biophotonics, microspectroscopy, optoacoustic tomography, nanoscopy, thermal spectroscopy, methods of remote analysis and monitoring, nondestructive testing, materials science, functional materials, theranostics, photochemistry, fluorescence, analytical chemistry, thermodynamics PACS:78.20.nb, 78.20.N−, 07.60.−j, 42.30.Wb, 43.35.Ud, 78.20.Pa, 82.80.Kq, 81.70.Cv, 87.19.Pp, 43.35.Sx (all) DOI:10.3367/UFNe.2021.05.038976 Citation: Proskurnin M A, Khabibullin V R, Usoltseva L O, Vyrko E A, Mikheev I V, Volkov D S "Photothermal and optoacoustic spectroscopy: current state and outlooks" Phys. Usp., accepted
Received: 26th, August 2020, revised: 18th, February 2021, accepted: 3rd, May 2021