本文關(guān)鍵詞：二維材料轉(zhuǎn)移技術(shù)研究及其在光纖激光器中的應(yīng)用　出處：《湖南大學(xué)》2015年碩士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： 光纖激光器 石墨烯 拓?fù)浣^緣體 諧波鎖模 調(diào)Q

【摘要】：脈沖光纖激光器在通信、醫(yī)療、工業(yè)加工、國(guó)防、科學(xué)研究等領(lǐng)域內(nèi)發(fā)揮著關(guān)鍵作用。調(diào)Q技術(shù)和鎖模技術(shù)是獲得脈沖激光的主要技術(shù),被動(dòng)調(diào)Q和鎖模光纖激光器具有結(jié)構(gòu)簡(jiǎn)單、穩(wěn)定性高、易于集成、脈沖質(zhì)量?jī)?yōu)越的優(yōu)點(diǎn)�？娠柡臀兆饔檬且环N對(duì)光的非線(xiàn)性損耗作用,對(duì)弱光的損耗大,對(duì)強(qiáng)光的損耗小,將具備這種特性的材料做成可飽和吸收體插入到諧振腔中是實(shí)現(xiàn)被動(dòng)調(diào)Q和被動(dòng)鎖模一種主要方式�？娠柡臀詹牧系陌l(fā)展先后經(jīng)歷了染料、半導(dǎo)體可飽和吸收鏡、碳納米管,最近幾年兩種二維原子材料——石墨烯和拓?fù)浣^緣體的可飽和吸收作用被發(fā)現(xiàn),基于二者作為可飽和吸收體的脈沖光纖激光器研究取得了豐富的成果。本文主要做了以下的工作:1.理論上分析了可飽和吸收體調(diào)Q的工作原理,介紹了調(diào)Q速率方程的建立和方程的解,討論了可飽和吸收體參數(shù)對(duì)調(diào)Q輸出的影響;由非線(xiàn)性薛定諤方程出發(fā),結(jié)合腔內(nèi)的雙折射效應(yīng)、光纖增益特性和可飽和吸收體的作用,得到了描述激光脈沖在可飽和吸收體鎖模光纖激光器中傳輸?shù)腉inzburg-Landau方程。2.對(duì)石墨烯的可飽和吸收機(jī)理作了詳細(xì)的分析,通過(guò)機(jī)械剝離高定向熱解石墨的方法制備了可飽和吸收體,搭建了石墨烯鎖模環(huán)形腔摻鉺光纖激光器,獲得了基頻鎖模和高階數(shù)的諧波鎖模,分析了多孤子的產(chǎn)生和諧波鎖模的形成機(jī)制,研究了不同階數(shù)諧波鎖模的輸出功率、脈沖寬度和單脈沖能量的變化。3.介紹了光沉積法轉(zhuǎn)移二維材料制備可飽和吸收體的物理過(guò)程,對(duì)比研究了該方法的制備效果,通過(guò)液相插層/剝離法制備了拓?fù)浣^緣體納米片,采用光沉積法制作了拓?fù)浣^緣體可飽和吸收體并應(yīng)用到線(xiàn)型腔調(diào)Q光纖激光器中,研究了調(diào)Q輸出特性隨泵浦功率的變化。
[Abstract]:Pulse fiber laser in communication, medical, industrial processing, national defense, scientific research in the field of play a crucial role. Q technology and mode locking technology is the main technology of pulse laser, Q and passively mode-locked fiber laser has the advantages of simple structure, high stability, easy integration, the advantages of superior quality. Pulse saturated absorption is a kind of nonlinear optical loss, loss of weak light, the light loss is small, will have the characteristics of materials into the saturable absorber into the resonant cavity is passively mode-locked Q and one of the main ways. Saturable absorber material development has experienced dye, SESAM, carbon nanotubes, in recent years, two kinds of materials: two-dimensional atomic graphene and topological insulator saturable absorption was found, based on two as the saturable absorption of the received pulse Study on fiber laser has achieved fruitful results. This paper has done the following work: 1. the theoretical analysis of the working principle of saturable absorber Q, introduces the establishment and adjustment of the rate equation of Q equation solution, the effect of saturable absorber parameters on the output of Q is discussed; starting from the nonlinear Schrodinger equation, double refraction the effect of combined cavity, fiber gain characteristics and effect of saturable absorber, has been described in Ginzburg-Landau laser pulse transmission equation of.2. saturable absorber mode-locked fiber laser on the graphene saturable absorption mechanism was analyzed in detail. Through the method of mechanical stripping of highly oriented pyrolytic graphite prepared by a saturable absorber, built the graphene mode-locked erbium-doped fiber ring laser, the harmonic mode-locked frequency and high-order mode-locked, analyzes multi soliton generation and harmonic mode-locked shape Mechanism of different order harmonic mode-locked output power, pulse width and pulse energy change.3. introduced light deposition preparation can transfer two-dimensional physical process of the saturable absorber material, a comparative study of the effect of the preparation method, layer / peel was prepared by the method of topological insulator nanoplates by liquid phase plug, making topological insulator saturable absorber and applied to linear Q tone fiber laser using optical deposition method, change the output characteristics of Q with pump power was studied.

【學(xué)位授予單位】：湖南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TN248

【參考文獻(xiàn)】

相關(guān)期刊論文 前5條

1 蔡岳;楊f惤，

本文編號(hào)：1373424