METHOD OF EXCITATION AND RECORDING OF OPTICAL PHONONS Russian patent published in 2016 - IPC G01J3/28 H01S4/00 G01N21/31 

FIELD: chemistry.

SUBSTANCE: method of excitation and recording of optical phonons includes application of active material layer on cantilever needle point AFM. This layer is subject to excitation by femtosecond laser activating pulse of optical phonons. Phonons are reflected from the boundary surface layer of active material/sample surface. In the same layer of active material optical phonons are reflected with the help of the probing pulse of femtosecond laser. Then, by means of processing the obtained information and calculations the energy spectrum of optical phonons is restored in analysed sample.

EFFECT: technical result consists in production of energy spectrum of optical phonons, as well as possibility of analysing chemical composition of surface with nanometric spatial resolution.

1 cl, 1 dwg