發(fā)布時間：2018-03-29 07:33

  本文選題：半導(dǎo)體激光器　切入點(diǎn)：組合透鏡　出處：《遼寧大學(xué)》2015年碩士論文

【摘要】：激光因其獨(dú)有的特點(diǎn)在許多領(lǐng)域得到了廣泛應(yīng)用,特別在激光測量領(lǐng)域中具有舉足輕重的地位。激光測量技術(shù)突出的優(yōu)點(diǎn)是：自然基準(zhǔn)光波直接與激光相聯(lián)系,可以實(shí)現(xiàn)高精度的測量,很容易做到光電轉(zhuǎn)換與單片機(jī)的互聯(lián)應(yīng)用,并能夠?qū)⒌玫降臏y量數(shù)據(jù)進(jìn)行分析和處理。本文激光系統(tǒng)的研究正是借助激光獨(dú)有的測量特性,結(jié)合內(nèi)置電子系統(tǒng),對每個零件遮斷光線時產(chǎn)生的明暗變化做出反應(yīng),可對靜止零件或旋轉(zhuǎn)零件進(jìn)行實(shí)時測量與破損監(jiān)控。本文從激光系統(tǒng)采用的三腳半導(dǎo)體激光器展開討論,分析并闡述了三腳半導(dǎo)體激光器的內(nèi)部結(jié)構(gòu)及工作方式,然后對三腳半導(dǎo)體激光器的光斑模態(tài)做出綜合探究,從縱模和橫模的分析角度出發(fā),分析得出TEMoo模為系統(tǒng)的理想工作模態(tài)。通過對R11所取不同阻值進(jìn)行數(shù)據(jù)對比分析,最后得出,在R11為5K時,可使三腳半導(dǎo)體激光器始終工作在恒流狀態(tài),保證了發(fā)射端激光光束有穩(wěn)定的波長(650nm)輸出,從而證明了APC驅(qū)動電路的可靠性,可以達(dá)到激光系統(tǒng)要求,能夠?qū)崿F(xiàn)實(shí)時的功率閉環(huán)。然后主要探討激光系統(tǒng)的核心部分,分析了高斯光束圓形鏡共焦腔的行波場和高斯光束的基本性質(zhì),并提出激光系統(tǒng)對激光光束的要求。通過對激光光學(xué)系統(tǒng)透鏡的綜合探究,并從高斯光束經(jīng)過薄透鏡變換與復(fù)雜透鏡變換的探究分析出發(fā),完成本套激光系統(tǒng)的鏡組選型。最后對形成的激光高斯光束進(jìn)行聚焦和準(zhǔn)直探究,完成了對光束聚焦和準(zhǔn)直的計算討論,經(jīng)實(shí)驗(yàn)論證,得出理論值l=3.5mm時,符合實(shí)際應(yīng)用的結(jié)論。最后對完成激光信號實(shí)時采集的光電二極管BPW24R進(jìn)行簡單介紹,闡述了光電二極管的工作方式。然后對圍繞光電二極管BPW24R設(shè)計的采集電路做出展示,采集系統(tǒng)以主控芯片STM32F101T6V6A為控制核心,以電荷運(yùn)算放大器OP213FP為激光信號采集核心。最后經(jīng)實(shí)驗(yàn)論證,基于光電二極管BPW24R特性設(shè)計的采集電路,在當(dāng)R16=1K,可編程電位器U5的輸入值為140時,可以較好的滿足激光系統(tǒng)采集實(shí)現(xiàn),符合本激光系統(tǒng)的實(shí)際要求。
[Abstract]:Because of its unique characteristics, laser has been widely used in many fields, especially in the field of laser measurement. The outstanding advantage of laser measurement technology is that the natural reference light wave is directly related to the laser. High precision measurement can be realized, it is easy to interconnect photoelectric conversion with single chip microcomputer, and the measured data can be analyzed and processed. In this paper, the research of laser system is based on the unique measurement characteristics of laser. Combined with the built-in electronic system, the light and dark changes caused by the shading of each part can be responded to, and the real-time measurement and damage monitoring of the static part or the rotating part can be carried out. This paper discusses the tripod semiconductor laser used in the laser system. In this paper, the internal structure and working mode of tripod semiconductor laser are analyzed and expounded, and then the mode of light spot of tripod semiconductor laser is studied synthetically, which is based on the analysis of longitudinal mode and transverse mode. It is concluded that the TEMoo mode is the ideal working mode of the system. By comparing and analyzing the different resistance values of R11, it is concluded that the tripod semiconductor laser can always work in the constant current state when R11 is 5K. The laser beam at the transmitter has a stable wavelength of 650 nm) output, which proves the reliability of the APC drive circuit, which can meet the requirements of the laser system and realize the real-time power closed-loop. Then the core part of the laser system is discussed. This paper analyzes the traveling wave field of Gao Si beam circular mirror confocal cavity and the basic properties of Gao Si beam, and puts forward the requirements of laser system for laser beam. Based on the inquiry and analysis of Gao Si beam through thin lens transformation and complex lens transformation, the mirror selection of this set of laser system is completed. Finally, focusing and collimation of the formed laser Gao Si beam is carried out. The calculation and discussion of beam focusing and collimation have been completed. The theoretical value of l=3.5mm is in line with the practical application conclusion. Finally, the photodiode BPW24R, which completes the real-time acquisition of laser signals, is briefly introduced. The working mode of photodiode is expounded. Then the acquisition circuit designed around photodiode BPW24R is demonstrated. The main control chip STM32F101T6V6A is used as the control core in the acquisition system. The laser signal acquisition core is the charge operational amplifier (OP213FP). Finally, the acquisition circuit based on the BPW24R characteristics of the photodiode is designed. When the input value of the programmable potentiometer U5 is 140, the input value of the programmable potentiometer U5 is 140, when the input value of the programmable potentiometer U5 is 140K. It can meet the practical requirements of the laser system.
【學(xué)位授予單位】：遼寧大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TN249

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 劉仲禹;張欣婷;吳倩倩;;高分辨率紫外/可見寬波段顯微物鏡設(shè)計[J];應(yīng)用光學(xué);2013年04期

，

本文編號：1680133