Yb-doped fiber laser based on pulse laser seeds in gain modulation technology

• Main Authors: SHEN YONGHANG, YANG DINGZHONG
• Format: Patent
• Language: Chinese; English
• Published: 09.02.2011
• Subjects: BASIC ELECTRIC ELEMENTS; DEVICES USING STIMULATED EMISSION; ELECTRICITY

The invention discloses a Yb-doped fiber laser based on pulse laser seeds in a gain modulation technology, which is composed of a pulse-modulated laser pumping source, a multimode fiber combiner, a fiber grating pair, a Yb-doped double clad fiber, an amplification-stage pumping source, a high-power combiner and a double clad Yb-doped fiber for amplifying laser power, wherein the pulse-modulated laser pumping source is coupled into the Yb-doped double clad gain fiber through the multimode fiber combiner so as to generate a pulse laser of which the wavelength is limited by the fiber grating pair; the generated pulse laser as a seed source is amplified by a one-stage or multistage fiber amplifier; the laser amplifier pumping source is coupled into the double clad Yb-doped fiber with large mode field diameter through the high-power combiner; and after power-level amplification, a high-power pulse laser output with adjustable repetition frequency is obtained. The invention can be used for obtaining novel high-powe