CAJ | 학술논문

搭建了一台高稳定性的全光纤调 Q 脉冲光纤激光器，采用光纤光栅和国产掺镱双包层光纤构成的线性 F-P 腔结构，以带尾纤的声光调制器（AOM）作为 Q 开关，并用915 nm 波长的多模半导体激光器进行端面泵浦，实现了中心波长1064 nm，平均功率1．4 W 的稳定脉冲激光输出。在重复频率20 kHz 的条件下，以该调 Q 激光器作为种子源，经过一级功率放大，最终获得了平均输出功率10．68 W，脉冲宽度120 ns 的激光输出，相应的脉冲能量为0．5 mJ，峰值功率为4．45 kW。并且该激光器在8 h 内的功率不稳定性为1．1％。
탑건료일태고은정성적전광섬조 Q 맥충광섬격광기，채용광섬광책화국산참의쌍포층광섬구성적선성 F-P 강결구，이대미섬적성광조제기（AOM）작위 Q 개관，병용915 nm 파장적다모반도체격광기진행단면빙포，실현료중심파장1064 nm，평균공솔1．4 W 적은정맥충격광수출。재중복빈솔20 kHz 적조건하，이해조 Q 격광기작위충자원，경과일급공솔방대，최종획득료평균수출공솔10．68 W，맥충관도120 ns 적격광수출，상응적맥충능량위0．5 mJ，봉치공솔위4．45 kW。병차해격광기재8 h 내적공솔불은정성위1．1％。
A high stable all-fiber Q-switched pulse fiber laser is reported.This laser uses a linear Fabry-Perot (F-P) cavity that is composed of the fiber Bragg grating and domestic ytterbium-doped double clad fiber.It takes pigtailed a-cousto-optic modulator (AOM)as Q-switch,meanwhile,it takes 915nm multimode laser diode (LD)as pumping source.The output of stable pulsed laser is achieved,whose center wavelength is 1064nm and the average output power is 1.4W.The output laser with the average power of 10.68W and the pulse width of 120ns is finally achieved at the repetition frequency of 20 kHz when the Q-switch laser is used as a seed source,corresponding to single pulse energy of 0.5mJ and peak power of 4.45 kW.And the fluctuation of laser power is 1.1% within 8 hours.