Scanning type laser induced spectrum surface range analysis and detection system

The invention discloses a scanning type laser induced spectrum surface range analysis and detection system. A laser emitting head is connected to an external laser inducing light source. The external laser inducing light source generate lasers, through the laser emitting head, lasers are emitted, and the generation of laser induced plasma is realized. A focusing optical device converges the induction excited laser beams emitted by the laser emitting head onto the surface of a tested sample. Then, a reflector collects the wide spectral range induced plasma scattered light signals of the tested sample and converges the signals into a light collecting device. The light collecting device converges induced plasma scattered light into an optical fiber and transmits the induced plasma scattered light to an external spectrograph; and the external spectrograph divides the spectrum formed by the plasma to obtain spectral strength data of different wavelengths. The wide range (several hundreds of nanometers) spectral collection in a same optical axis is realized, Joule level large energy laser induction can be born, and the efficiency is increased to more than 90%.