發(fā)布時(shí)間：2018-04-18 19:26

  本文選題：連續(xù)波 + 中紅外�。� 參考：《浙江大學(xué)》2015年碩士論文

【摘要】：中紅外激光在科研、軍事以及民用領(lǐng)域都有著極其重要的應(yīng)用價(jià)值和發(fā)展前景。光學(xué)參量振蕩器是獲得中紅外波段激光最為有效的手段之一,設(shè)計(jì)實(shí)現(xiàn)高質(zhì)量的光學(xué)參量振蕩器對(duì)未來(lái)社會(huì)發(fā)展起著重要的作用。本文在理論分析的基礎(chǔ)上對(duì)基于PPMgOLN的中紅外光學(xué)參量振蕩技術(shù)進(jìn)行了研究。理論方面,分析了光學(xué)參量振蕩技術(shù)的各類特性,針對(duì)光學(xué)參量振蕩技術(shù)的基本原理進(jìn)行了簡(jiǎn)介,著重介紹了相位匹配技術(shù)。針對(duì)光學(xué)參量振蕩技術(shù)的部分理論特性進(jìn)行了推導(dǎo)和分析,并對(duì)增益、閾值和轉(zhuǎn)換效率的部分理論模型進(jìn)行了計(jì)算。實(shí)驗(yàn)方面,首先針對(duì)中紅外光學(xué)參量振蕩器的泵浦源部分進(jìn)行了實(shí)驗(yàn)研究。設(shè)計(jì)實(shí)現(xiàn)了一款新型的混合放大激光光源,利用光纖放大器和固體介質(zhì)放大器相結(jié)合的方法,對(duì)連續(xù)種子光源進(jìn)行放大,最終實(shí)現(xiàn)高質(zhì)量激光輸出。系統(tǒng)最大輸出功率為31.9W,,輸出波長(zhǎng)1064nm,光束質(zhì)量因子M2控制在1.5以下。實(shí)驗(yàn)結(jié)果驗(yàn)證了混合放大方式是獲得功率放大的一種有效手段,并為后續(xù)中紅外光學(xué)參量振蕩技術(shù)的研究提供了優(yōu)質(zhì)的泵浦光源。隨后,對(duì)基于準(zhǔn)相位匹配的外腔單諧振PPMgOLN OPO進(jìn)行了研究。通過(guò)對(duì)PPMgOLN晶體的周期調(diào)諧和溫度調(diào)諧特性的實(shí)驗(yàn)研究,驗(yàn)證了利用PPMgOLN實(shí)現(xiàn)2.9μm中紅外激光輸出的可行性,確定了波長(zhǎng)調(diào)諧方式為溫度調(diào)諧。然后通過(guò)對(duì)比實(shí)驗(yàn),分析了不同輸出鏡反射率、曲率半徑以及不同腔長(zhǎng)情況下光學(xué)參量振蕩器的輸出性能。最終通過(guò)諧振腔的優(yōu)化設(shè)計(jì),在31.9W泵浦功率情況下,實(shí)現(xiàn)了輸出功率5.2W的2.9μm光學(xué)參量振蕩器。
[Abstract]:Mid-infrared laser has very important application value and development prospect in scientific research, military and civilian fields.Optical parametric oscillator (OPO) is one of the most effective methods to obtain mid-infrared laser. The design and realization of high quality optical parametric oscillator (OCO) plays an important role in the future development of society.In this paper, based on the theoretical analysis, the mid-infrared optical parametric oscillation technology based on PPMgOLN is studied.In theory, the characteristics of optical parametric oscillation are analyzed, the basic principle of optical parametric oscillation is introduced, and the phase matching technique is introduced emphatically.Some theoretical characteristics of optical parametric oscillation are deduced and analyzed, and some theoretical models of gain, threshold and conversion efficiency are calculated.Firstly, the pump source of the mid-infrared optical parametric oscillator is studied experimentally.A new hybrid amplifier laser source is designed and realized. The continuous seed light source is amplified by the combination of fiber amplifier and solid medium amplifier, and the high quality laser output is realized.The maximum output power of the system is 31.9WN, the output wavelength is 1064nm, and the beam quality factor M2 is controlled below 1.5.The experimental results show that the hybrid amplification method is an effective means to obtain power amplification and provide a high quality pump light source for the further study of the mid-infrared optical parametric oscillation technology.Then, the quasi-phase-matched external cavity single resonance PPMgOLN OPO is studied.Through the experimental study of the periodic tuning and temperature tuning of PPMgOLN crystal, the feasibility of using PPMgOLN to realize the output of 2. 9 渭 m medium infrared laser is verified, and the wavelength tuning mode is determined as temperature tuning.Then, the output performance of the optical parametric oscillator with different reflectivity, radius of curvature and cavity length is analyzed by contrast experiments.Finally, through the optimization design of the resonator, 2.9 渭 m optical parametric oscillator with output power of 5.2 W is realized under the condition of 31.9W pump power.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN753.91

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 秦莉娟,周志堯,包學(xué)誠(chéng);高功率可調(diào)諧激光器——光學(xué)參量振蕩器的新進(jìn)展[J];現(xiàn)代科學(xué)儀器;2000年01期

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本文編號(hào)：1769731