NANOSECOND PULSE LASER DEVICE AND ALTERATIVE LASER WAVELENGTH OUTPUT METHOD THEREOF

摘要

The present invention relates to a nanosecond pulse laser device. The nanosecond pulse laser device according to the present invention includes a light source which outputs a laser beam of a nanosecond pulse, a lens which focuses the laser beam, a Raman shift fiber which generates pulse lasers corresponding to a plurality of wavelengths through the stimulated Raman scattering of the focused laser beam, a wavelength divider which divides the pulse lasers of the predetermined wavelengths among the pulse lasers, an optical switch which selects the pulse lasers outputted from the wavelength divider to mutually alternate the wavelengths in response to a switch control signal which is applied from the outside, and a wavelength combiner which combines and outputs the pulse lasers whose wavelengths are alternatively outputted from the switch.;COPYRIGHT KIPO 2014