本文選題：外腔反饋　切入點(diǎn)：光纖激光器　出處：《安徽大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：激光器自20世紀(jì)60年代誕生以來(lái),已經(jīng)經(jīng)歷了五十多年的發(fā)展。隨著現(xiàn)代光電子技術(shù)、光纖通信技術(shù)以及傳感技術(shù)的快速發(fā)展,不同種類的激光器已廣泛應(yīng)用于工農(nóng)業(yè)生產(chǎn)、航空航天、國(guó)防軍事、醫(yī)療衛(wèi)生和科學(xué)研究等各個(gè)領(lǐng)域,與人們的生活息息相關(guān)。本文將外腔反饋技術(shù)與光纖激光器相結(jié)合,研究了外腔反饋對(duì)光纖激光器閾值功率、激光線寬和穩(wěn)定性等特性的影響,同時(shí)開展了基于激光自混合效應(yīng)的相關(guān)測(cè)距傳感研究。本文主要的研究工作有：1. 基于激光器速率方程和穩(wěn)態(tài)方程對(duì)外腔光纖激光器的工作原理進(jìn)行了理論推導(dǎo),并仿真模擬了外腔反饋對(duì)激光器輸出特性的影響,搭建了外腔光纖激光器試驗(yàn)系統(tǒng)并完成了相關(guān)的研究工作。2. 將外腔反饋引入到可調(diào)諧光纖激光器中,并成功搭建基于外腔反饋可調(diào)諧光纖激光器系統(tǒng),展開了外腔反饋對(duì)激光器閾值功率、激光線寬和穩(wěn)定性等特性影響的研究。3. 結(jié)合自混合技術(shù)及波長(zhǎng)調(diào)諧技術(shù),分別建立了基于半導(dǎo)體激光器和光纖激光器的測(cè)距傳感模型并進(jìn)行了仿真模擬,分別搭建了半導(dǎo)體激光器和光纖激光器自混合測(cè)距系統(tǒng),展開了基于半導(dǎo)體激光器和線形腔光纖激光器自混合測(cè)距研究。實(shí)驗(yàn)結(jié)果表明半導(dǎo)體激光器的測(cè)距范圍為4cm-60cm,測(cè)量精度在5mm以內(nèi),并對(duì)測(cè)量誤差進(jìn)行了相應(yīng)的分析。本論文的創(chuàng)新點(diǎn)主要包括：1.建立外腔反饋光纖激光器系統(tǒng)物理模型,并基于該模型仿真模擬了外腔反饋對(duì)光纖激光器及可調(diào)諧光纖激光器閾值功率、激光線寬和穩(wěn)定性等輸出特性的影響,為后續(xù)的實(shí)驗(yàn)研究和應(yīng)用奠定了理論基礎(chǔ)。2.搭建了外腔反饋光纖激光器及可調(diào)諧光纖激光器系統(tǒng),并展開了外腔反饋對(duì)激光器輸出特性影響的研究,并實(shí)現(xiàn)了閾值功率從29.24mW降低到24.02mW,線寬從21.4kHz壓窄到17.2kHz：可調(diào)諧光纖激光器的調(diào)諧范圍大約15nm,邊模抑制比大于66dB,線寬從20.4kHz壓窄到7.3kHz。3.建立了基于光纖激光器的測(cè)距傳感模型,分別搭建了半導(dǎo)體激光器和光纖激光器自混合測(cè)距系統(tǒng)并展開了相關(guān)研究,為進(jìn)一步研究光纖激光器的傳感應(yīng)用奠定了基礎(chǔ)。
[Abstract]:Laser has been developed for more than 50 years since it was born in 1960s. With the rapid development of modern optoelectronic technology, optical fiber communication technology and sensing technology, different kinds of lasers have been widely used in industrial and agricultural production. Aerospace, national defense, military, medical and health, and scientific research are closely related to people's lives. In this paper, the threshold power of external cavity feedback to fiber laser is studied by combining external cavity feedback technology with fiber laser. The effects of laser linewidth and stability, At the same time, the related ranging sensing research based on laser self-mixing effect is carried out. The main research work in this paper is: 1. The working principle of external cavity fiber laser based on laser rate equation and steady-state equation is deduced theoretically. The effect of external cavity feedback on the output characteristics of the laser is simulated and the experimental system of the external cavity fiber laser is built and the related research work is completed. 2. The external cavity feedback is introduced into the tunable fiber laser. A tunable fiber laser system based on external cavity feedback is successfully built. The effects of external cavity feedback on the threshold power, laser linewidth and stability of the laser are studied. The ranging sensing models based on semiconductor laser and fiber laser are established and simulated, and the self-mixing ranging system of semiconductor laser and fiber laser is built, respectively. The self-mixing ranging research based on semiconductor laser and linear cavity fiber laser is carried out. The experimental results show that the ranging range of semiconductor laser is 4cm-60 cm, and the measurement accuracy is within 5mm. And the measurement error is analyzed accordingly. The innovation of this paper mainly includes: 1. The physical model of external cavity feedback fiber laser system is established. Based on the model, the effects of external cavity feedback on the output characteristics of fiber laser and tunable fiber laser, such as threshold power, laser linewidth and stability, are simulated and simulated. 2. The external cavity feedback fiber laser and tunable fiber laser system are built, and the effects of external cavity feedback on the output characteristics of the laser are studied. The threshold power is reduced from 29.24mW to 24.02 MW, the linewidth is narrowed from 21.4kHz to 17.2 kHz: the tuning range of tunable fiber laser is about 15nm, the edge-mode rejection ratio is greater than 66dB, the linewidth is narrowed from 20.4kHz voltage to 7.3kHz. 3. The ranging sensing model based on fiber laser is established. The self-mixing ranging system of semiconductor laser and fiber laser is built and the related research is carried out, which lays a foundation for further research on the sensing application of fiber laser.
【學(xué)位授予單位】：安徽大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN248

【參考文獻(xiàn)】

相關(guān)期刊論文 前2條

1 王文倩,呂福云,董法杰,胡姝玲,張書敏,謝春霞,董孝義;外腔反饋式單頻摻Er~(3+)光纖激光器的優(yōu)化設(shè)計(jì)[J];光電子·激光;2004年02期

2 吳曉冬,陳軍,葛劍虹;0.02nm帶寬近衍射極限輸出的雙外腔反饋半導(dǎo)體激光器[J];強(qiáng)激光與粒子束;2005年11期

相關(guān)博士學(xué)位論文 前1條

1 彭俊松;超快光纖激光器及其動(dòng)力學(xué)特性研究[D];上海交通大學(xué);2013年

，

本文編號(hào)：1646640