APPARATUS FOR GENERATING MID-WAVELENGTH INFRARED FIBER LASER WITH SEPARATED WAVELENGTH CONVERSION HEAD

摘要

PURPOSE: An apparatus for generating a mid infrared optical fiber laser source with a separated wavelength conversion head is provided to form of a light and miniature structure by separating an Yb(Ytterbium) added optical fiber laser module part and a PPLN(Periodically Poled Lithium Niobate) light medium oscillation part. CONSTITUTION: An optical fiber laser module part(210) generates laser beams by pre-amplifying and amplifying generated seed beams. A wavelength conversion head part(220) is composed of a PPLN(Periodically Poled Lithium Niobate) light medium oscillator generating laser beams by changing the generated laser beam into a mid infrared wavelength within the wavelength band of 2-5um. An optical fiber(214) for transmission transmits the laser beams without loss by connecting the optical fiber laser module part to the wavelength conversion head part. The optical fiber laser module part comprises a seed beam generating part(211), a pre-amplifying part(212), and a main amplification part(213).