COMBINED RAMAN SPECTROSCOPY AND LASER-INDUCED BREAKDOWN SPECTROSCOPY

摘要

An apparatus (10) includes a single laser source (20) configurable to produce laser pulses (35) directable towards a target substance (30), a focusing lens (25) optically positionable between the single laser source (20) and the target substance (30), the focusing lens (25) focusing a first laser pulse (35) to ablate at least a portion of the target substance (30) when in a first focusing lens position to generate a plasma plume, the plume emitting atomic emission lines characteristic of elements including the target substance, the focusing lens (25) focusing a second laser pulse (35) in the target substance (30) when in a second focusing lens position, resulting in Raman scattering, a collection optics assembly (45) to detect signals representing the atomic emission lines characteristic of the target substance (30) and the Raman scattering, and a spectrometer (40) to detect signals received from the collection optics assembly (45).