本文選題：Pr~(3+):YLF + 激光器��； 參考：《長(zhǎng)春理工大學(xué)》2017年碩士論文

【摘要】：橙紅(600nm-660nm)波段的激光在激光投影、激光彩色顯示、平版印刷及激光通信等領(lǐng)域都具有廣泛的應(yīng)用。近年來(lái)利用非線性頻率變換的方法輸出該波段激光是相對(duì)穩(wěn)定且比較成熟的方法。但是這種方法必須進(jìn)行至少一次以上的非線性頻率變換過(guò)程,導(dǎo)致光-光轉(zhuǎn)換效率低,相比于直接獲得的方式,其劣勢(shì)顯然可見(jiàn)。隨著市場(chǎng)對(duì)連續(xù)橙光光源的需求不斷增加,人們開(kāi)始尋找能直接輸出橙紅光波段激光的新型晶體。藍(lán)光泵浦Pr~(3+)激光器可以直接產(chǎn)生綠光、橙光和紅光,這是相對(duì)有效且簡(jiǎn)便的方法。因此本論文對(duì)藍(lán)光LD泵浦Pr~(3+):YLF激光器直接產(chǎn)生可見(jiàn)光展開(kāi)了以下研究。1.測(cè)量了不同偏振方向的Pr~(3+):YLF晶體的激光特性,獲得了相關(guān)晶體參數(shù),進(jìn)而通過(guò)推導(dǎo)四能級(jí)速率方程理論建立了Pr~(3+)激光器的數(shù)學(xué)模型,并模擬了激光器輸出鏡透過(guò)率和光斑半徑對(duì)激光輸出特性的影響,在此基礎(chǔ)上對(duì)輸出鏡透過(guò)率進(jìn)行了優(yōu)化設(shè)計(jì)。2.研究了在激光諧振腔內(nèi)插入法布里-珀羅(F-P)標(biāo)準(zhǔn)具來(lái)選擇Pr~(3+)激光波長(zhǎng)的相關(guān)理論。通過(guò)調(diào)節(jié)標(biāo)準(zhǔn)具在激光諧振腔里的厚度和傾斜角度來(lái)控制不同波長(zhǎng)間的損耗,從而實(shí)現(xiàn)相鄰波長(zhǎng)的選擇。并模擬了標(biāo)準(zhǔn)具的厚度和傾斜角度對(duì)激光閾值的影響,確定出可以實(shí)現(xiàn)Pr~(3+)激光多波長(zhǎng)輸出的標(biāo)準(zhǔn)具的最優(yōu)厚度和角度,為實(shí)驗(yàn)奠定了理論基礎(chǔ);3.最后根據(jù)前面對(duì)Pr~(3+):YLF激光器的理論模擬以及在諧振腔內(nèi)插入F-P標(biāo)準(zhǔn)具的優(yōu)化設(shè)計(jì),開(kāi)展了藍(lán)光抽運(yùn)Pr~(3+):YLF晶體產(chǎn)生可見(jiàn)光的實(shí)驗(yàn)研究:(1)對(duì)8WLD泵浦光束進(jìn)行了整形,并測(cè)試了2W8WLD藍(lán)光抽運(yùn)源的輸出特性,計(jì)算出a切c切晶體的泵浦功率吸收效率;(2)通過(guò)比較不同偏振方向的晶體、不同曲率半徑和透過(guò)率的輸出鏡,獲得a切晶體639nm紅光最高輸出功率為492mW、c切晶體607nm橙光最高輸出功率為177mW,并且嘗試了采用三鏡V型腔結(jié)構(gòu),進(jìn)行了雙端泵浦抽運(yùn)Pr~(3+):YLF晶體輸出橙光的實(shí)驗(yàn),獲得了最高輸出功率為58mW的607nm橙光;(3)通過(guò)調(diào)節(jié)標(biāo)準(zhǔn)具的角度,成功獲得了最高功率為30mW的607nm639nm雙波長(zhǎng)、25mW的604nm607nm639nm三波長(zhǎng)激光輸出,實(shí)驗(yàn)結(jié)果驗(yàn)證了理論模擬的正確性。
[Abstract]:The laser in the range of 600nm-660nm) has been widely used in the fields of laser projection, laser color display, lithography and laser communication. In recent years, it is a relatively stable and mature method to output the laser band by nonlinear frequency conversion. However, this method has to undergo at least one nonlinear frequency conversion process, which leads to the low efficiency of optical-optical conversion, and its disadvantage is obvious compared with the method of direct acquisition. With the increasing market demand for continuous orange light sources, people begin to look for new crystals that can directly output orange red band lasers. Blue pumped Pr~(3) laser can produce green, orange and red light directly, which is a relatively effective and simple method. Therefore, in this thesis, the following research has been done on the direct generation of visible light from Pr~(3: YLF laser pumped by blue LD. The laser characteristics of Pr~(3: YLF crystal with different polarization directions are measured, and the related crystal parameters are obtained. The mathematical model of Pr~(3) laser is established by deducing the four-level rate equation theory. The effects of the transmittance of the laser output mirror and the radius of the spot on the laser output characteristics are simulated. On the basis of this, the transmittance of the output mirror is optimized. The theory of choosing Pr~(3) laser wavelength by inserting Fabry-Perot F-P standard device into laser resonator is studied. The loss between different wavelengths is controlled by adjusting the thickness and tilt angle of the standard device in the laser resonator, and the selection of adjacent wavelengths is realized. The influence of the thickness and tilt angle of the standard device on the laser threshold is simulated, and the optimum thickness and angle of the standard device which can realize the multi-wavelength output of Pr~(3 are determined, which lays a theoretical foundation for the experiment. Finally, based on the theoretical simulation of the Pr~(3: YLF laser and the optimized design of the F-P standard device inserted into the resonator, an experimental study on the visible light produced by the blue-pumped Pr~(3: YLF crystal is carried out. The output characteristics of 2W8WLD blue light pump source are tested. The pump power absorption efficiency of a cut c cut crystal is calculated by comparing the crystal with different polarization direction, the output mirror with different curvature radius and transmittance. The maximum output power of a cut crystal 639nm red light is 492 MW / c. The maximum output power of 607nm orange light is 177mW, and a three-mirror V-cavity structure is used to pump the orange light from Pr~(3: YLF crystal. By adjusting the angle of the standard device, the maximum output power of 607nm orange laser with the highest output power of 58mW is obtained, and the 607nm639nm double wavelength 25MW 604nm607nm639nm three-wavelength laser output with the highest power of 30mW is obtained. The experimental results verify the correctness of the theoretical simulation.
【學(xué)位授予單位】：長(zhǎng)春理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN248

【參考文獻(xiàn)】

相關(guān)期刊論文 前7條

1 楊晗;徐斌;蔡志平;鐘一樂(lè);程勇杰;渠彪;許惠英;;藍(lán)光LD抽運(yùn)Pr~(3+):LiYF_4 604nm橙光激光器和紅橙多波長(zhǎng)激射[J];光學(xué)學(xué)報(bào);2014年10期

2 王鳳娟;劉哲;徐斌;曾承航;黃舜林;閆宇;羅塞雨;蔡志平;許惠英;;藍(lán)光激光二極管抽運(yùn)Pr~(3+):YLF紅綠可見(jiàn)光激光器[J];中國(guó)激光;2013年12期

3 黃舜林;劉哲;曾承航;蔡志平;許惠英;;藍(lán)光激光二極管抽運(yùn)Pr:YLF綠光激光器[J];中國(guó)激光;2012年12期

4 葉錦函;郝曉劍;周漢昌;;基于ZEMAX的激光光束整形技術(shù)試驗(yàn)研究[J];工程與試驗(yàn);2010年03期

5 呂彥飛;張喜和;姚治海;;全固態(tài)復(fù)合內(nèi)腔和頻613nm連續(xù)波橙光激光器[J];激光與紅外;2007年07期

6 楊正興;梁玉軍;張靜;田培根;;藍(lán)綠激光對(duì)潛通信研究[J];光機(jī)電信息;2006年02期

7 郭明秀,沈冠群,陸雨田;激光二極管光束整形技術(shù)[J];激光技術(shù);2003年04期

相關(guān)博士學(xué)位論文 前2條

1 萬(wàn)學(xué)斌;雙波長(zhǎng)光參量振蕩器及589nm拉曼黃光激光器的研究[D];山東大學(xué);2012年

2 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(guó)科學(xué)院研究生院（長(zhǎng)春光學(xué)精密機(jī)械與物理研究所）;2012年

相關(guān)碩士學(xué)位論文 前3條

1 王鳳娟;藍(lán)光泵浦Pr:YLF紅光雙波長(zhǎng)激光器[D];廈門(mén)大學(xué);2014年

2 羅明;Pr~（3+）:YLF晶體激光特性的研究[D];哈爾濱工業(yè)大學(xué);2010年

3 韓志鵬;半導(dǎo)體激光器光束質(zhì)量評(píng)價(jià)方法與光束整形技術(shù)的研究[D];吉林大學(xué);2008年

，

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