本文選題：半導(dǎo)體激光器　切入點：快慢軸準直　出處：《蘇州大學(xué)》2015年碩士論文

【摘要】：高功率半導(dǎo)體激光器在材料加工、激光器泵浦以及國防安全等領(lǐng)域應(yīng)用十分廣泛。半導(dǎo)體激光器的堆棧(stack)與巴條(bar)可以實現(xiàn)很高的輸出功率,但是其光束質(zhì)量較差,難以耦合進入較細芯徑的光纖中。單管半導(dǎo)體激光器光束質(zhì)量好、壽命長、調(diào)試方便,多個單管半導(dǎo)體激光器合束后可以達到較高的功率,容易耦合進較細芯徑的光纖之中,因此對單管半導(dǎo)體激光器光纖耦合的研究具有十分重要的意義。本論文從方案設(shè)計、理論模擬以及實驗驗證等方面進行了單管半導(dǎo)體激光器光纖耦合技術(shù)研究。本論文設(shè)計了一種單管半導(dǎo)體激光器光纖耦合模塊,其中半導(dǎo)體激光器的中心波長為980 nm,單管半導(dǎo)體激光器的輸出功率為12 W。模塊中采用非球面柱透鏡和球面柱透鏡對16個單管半導(dǎo)體激光器輸出光束進行準直,經(jīng)過等腰直角棱鏡空間合束以及一維伽利略望遠系統(tǒng)慢軸擴束后,利用三片式消球差聚焦鏡將光束耦合進芯徑100μm、數(shù)值孔徑(NA)0.22的光纖中,耦合效率理論上可達88.9%。全系統(tǒng)模擬結(jié)果表明:該方案可實現(xiàn)137 W的激光輸出,全系統(tǒng)效率可達71%。為光纖耦合實驗奠定了理論基礎(chǔ)。對單管半導(dǎo)體激光器光纖耦合模塊各部件的設(shè)計進行了容差分析。采用光線追跡法模擬了快慢軸準直鏡的位置偏差與角度偏差、等腰直角棱鏡的位置偏差以及擴束系統(tǒng)的位置偏差對全系統(tǒng)效率的影響。模擬結(jié)果表明,快軸準直鏡在快軸方向的位置偏差對全系統(tǒng)效率的影響最大,其位置偏差應(yīng)該控制在-470~500 nm以內(nèi)。該分析結(jié)果對于光纖耦合實驗具有一定的指導(dǎo)作用。選取模塊中空間排布上位于兩邊帶與中心共3個單管半導(dǎo)體激光器開展了光纖耦合實驗,實驗結(jié)果表明:半導(dǎo)體激光器光纖耦合的全系統(tǒng)效率為67.1%,實驗結(jié)果與設(shè)計值基本吻合。該方案滿足高功率半導(dǎo)體激光器光纖耦合的應(yīng)用要求。
[Abstract]:High power semiconductor lasers are widely used in material processing, laser pumping, and national defense security. The stack stack and barbar of semiconductor lasers can achieve high output power, but the beam quality is poor. It is difficult to couple into fine core diameter fiber. Single tube semiconductor laser beam quality is good, life is long, debugging is convenient. After multiple single tube semiconductor laser beams are closed, it can achieve higher power and is easily coupled into fine core diameter optical fiber. Therefore, it is of great significance to study the fiber coupling of single-transistor semiconductor lasers. Theoretical simulation and experimental verification are carried out to study the fiber coupling technology of single-tube semiconductor laser. In this paper, a fiber coupling module of single-tube semiconductor laser is designed. The central wavelength of semiconductor laser is 980 nm and the output power of single-tube semiconductor laser is 12 w.The output beam of 16 single-tube semiconductor lasers is collimated by aspheric cylindrical lens and spherical cylindrical lens in the module. After the spacial beam of isosceles right angle prism and the slow axial beam of one dimensional Galileo distant system are expanded, the beam is coupled into a fiber with a core diameter of 100 渭 m and a numerical aperture of 0.22 using a three-slice Aspheric focusing mirror. In theory, the coupling efficiency can reach 88.9.The whole system simulation results show that this scheme can realize the laser output of 137W. The efficiency of the whole system can reach 71.The theoretical foundation for the fiber coupling experiment is established. The tolerance analysis of the components of the fiber coupling module of a single transistor semiconductor laser is carried out. The position of the fast and slow axis collimation mirror is simulated by the ray tracing method. Set deviation and angle deviation, The effect of the position deviation of the isosceles right angle prism and the position deviation of the beam expansion system on the efficiency of the whole system. The simulation results show that the position deviation of the fast axis collimating mirror in the fast axis direction has the greatest influence on the efficiency of the whole system. The position deviation should be controlled within -470 nm. The results of the analysis can be used to guide the fiber coupling experiment. Three single-transistor semiconductor lasers with two sides and one center in the space arrangement of the module are selected to carry out the fiber coupling experiment. The experimental results show that the overall system efficiency of fiber coupling is 67.1, and the experimental results are in good agreement with the designed values. This scheme can meet the requirements of fiber coupling of high power semiconductor lasers.
【學(xué)位授予單位】：蘇州大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TN248.4

【參考文獻】

相關(guān)期刊論文 前3條

1 王德,李學(xué)千;半導(dǎo)體激光器的最新進展及其應(yīng)用現(xiàn)狀[J];光學(xué)精密工程;2001年03期

2 高衛(wèi);激光束衍射極限倍數(shù)β的確定方法[J];光子學(xué)報;2003年09期

3 陳國;趙長明;紀榮yN;李鯤;羅雄;白羽;;基于ZEMAX的半導(dǎo)體激光準直仿真設(shè)計[J];激光技術(shù);2012年03期

相關(guān)博士學(xué)位論文 前1條

1 郝明明;大功率半導(dǎo)體激光短陣列合束及光纖耦合技術(shù)的研究[D];中國科學(xué)院研究生院（長春光學(xué)精密機械與物理研究所）;2012年

，

本文編號：1697478