CAJ | 학술논문

为了研究自调Q掺铒光纤激光器输出动态特性，采用搭建全光纤结构的线形腔和环形腔自调Q掺铒光纤激光器进行了理论分析和实验验证。实验中，当抽运功率达到起振阈值后，随着抽运功率的增加，用示波器观察输出激光，线形腔输出激光依次经历了连续波、自调Q两种运行状态，由于抽运功率的限制，未能再次出现连续波运行状态，而环形腔输出激光则先经历了自调Q运行状态，然后是连续波运行状态；线形腔在抽运功率21mW～190mW的范围内，可获得脉冲宽度8μs ～100μs范围内可调、重复频率2．5kHz～54kHz范围内可调的自调Q脉冲；环形腔在抽运功率为16．2mW～110mW时，可获得的脉冲宽度在165μs左右。结果表明，自调Q掺铒光纤激光器因腔结构的不同，输出激光动态特性也不同；线形腔和环形腔均有自调Q脉冲输出，但线形腔自调Q范围更大。
위료연구자조Q참이광섬격광기수출동태특성，채용탑건전광섬결구적선형강화배형강자조Q참이광섬격광기진행료이론분석화실험험증。실험중，당추운공솔체도기진역치후，수착추운공솔적증가，용시파기관찰수출격광，선형강수출격광의차경력료련속파、자조Q량충운행상태，유우추운공솔적한제，미능재차출현련속파운행상태，이배형강수출격광칙선경력료자조Q운행상태，연후시련속파운행상태；선형강재추운공솔21mW～190mW적범위내，가획득맥충관도8μs ～100μs범위내가조、중복빈솔2．5kHz～54kHz범위내가조적자조Q맥충；배형강재추운공솔위16．2mW～110mW시，가획득적맥충관도재165μs좌우。결과표명，자조Q참이광섬격광기인강결구적불동，수출격광동태특성야불동；선형강화배형강균유자조Q맥충수출，단선형강자조Q범위경대。
In order to study the dynamical behaviors of self-Q-switched erbium-doped fiber lasers , all-fiber self-Q-switched erbium-doped fiber lasers with linear cavity configuration and ring cavity configuration were constructed .Theoretical analysis and experimental verification were also carried out .In the experiment , when pump power reached the threshold , output laser was observed by oscilloscope with the increase of pump power .Linear cavity laser output experienced two operation states of continuous wave ( CW) and self-Q-switched in turn and failed to appear CW operation state again because of the constraint of pump power .Ring cavity laser output experienced self-Q-switched operation state at first and then CW operation state .For linear cavity, self-Q-switched pulses can be obtained with pulse width from 8μs to 100μs and repetition rate from 2.5kHz to 54kHz in pump power range from 21mW to 190mW.For ring cavity, self-Q-switched pulses can be obtained with pulse width about 165μs and repetition rate about 3kHz at pump power range from 16.2mW to 110mW.The results show that dynamical behaviors of output laser are different because cavity configurations of self-Q-switched erbium-doped fiber laser are different .Although both linear and ring cavities have self-Q-switched pulse output , the range of self-Q-switched pulse is wider for linear cavity .