Laser atomic spectral analysis of micro-samples - uses radiation from sample excited by laser directed to spectrograph by selective mirror

摘要

The device has a laser emitting coherent light for evaporation and excitation of sample material, and an optical system for focussing coherent light on the sample to be analysed. A spectrograph is used for examination of the spectrum emitted by the heated sample material. A frequency selective, inclined coupling out mirror is provided in the beam path between the laser and focusing optical system. It directs the radiation originated in the excited sample material, after its passage through the sample vapour and focussing by the optical system, into the spectrograph slot plane. The tested sample is on a support with known continuous spectrum.