本文選題：金納米棒 + Nd:YSAG晶體��； 參考：《山東師范大學(xué)》2017年碩士論文

【摘要】：被動調(diào)Q激光器由于不用外加電子調(diào)Q開關(guān)器件,僅僅在激光器的諧振腔內(nèi)部置入可飽和吸收體(SA),通過它對特定波長光的飽和吸收特性就可以實現(xiàn)脈沖激光輸出,因而被廣泛研究。本篇文章重點介紹以一種新種類的材料—金納米棒為SA的被動調(diào)Q脈沖激光器。在研究過程中,重點以Nd:YSAG晶體、Nd:LGGG晶體、Nd:YVO_4晶體作為增益介質(zhì),以808 nm的LD泵浦源,產(chǎn)生了1.06μm的脈沖激光。身為被動調(diào)Q激光器中的核心部分,可飽和吸收體的發(fā)展一直以來都備受關(guān)注。優(yōu)質(zhì)的飽和吸收體響應(yīng)時間超快,并且要具有較寬的吸收帶寬以及較高的三階非線性系數(shù)等特點。1.本篇文章重點地介紹固體激光器以及光纖激光器所經(jīng)歷的發(fā)展進(jìn)程,主要對被動調(diào)Q這種激光技術(shù)進(jìn)行了介紹,并且對激光器的基本工作原理、調(diào)Q技術(shù)的理論進(jìn)行介紹。2.重點介紹了幾種激光晶體。對Nd:YSAG晶體、Nd:LGGG晶體、Nd:YVO_4晶體的工作特性進(jìn)行了簡介。對各晶體的優(yōu)缺點進(jìn)行了描述。并重點介紹了Nd:YSAG晶體相對于Nd:YVO_4晶體在當(dāng)做增益介質(zhì)時的優(yōu)勢。3.系統(tǒng)地描述了多種SA,其中包括傳統(tǒng)的SA:Cr~(4+):YAG晶體、半導(dǎo)體可飽和吸收鏡(SESAM)以及新型的SA:石墨烯、碳納米管(CNT)。并重點對金納米材料和其中的金納米棒材料的工作特性進(jìn)行了系統(tǒng)的描述。4.采用長徑比是6.75的金納米棒作為SA,研究了Nd:YSAG激光器、Nd:LGGG激光器、Nd:YVO_4激光器所輸出激光的特性,獲取1.06μm的激光,其脈沖的頻率相對較高,峰值功率大。5.主要創(chuàng)新點:首次將金納米棒作為飽和吸收體應(yīng)用于全固態(tài)激光器中,并得到了頻率高、功率大的1.06μm激光輸出。并研究了Nd:YSAG晶體在當(dāng)做增益介質(zhì)時的工作特性。
[Abstract]:Because the passive Q-switched laser does not need the additional electronic Q-switched switch device, only the saturable absorber is placed in the resonator of the laser, by which the pulse laser output can be realized by the saturation absorption characteristic of the light at a specific wavelength. As a result, it has been extensively studied. In this paper, a new kind of passively Q-switched laser with gold nanorods as SA is introduced. In the research process, the ND: YVOS4 crystal of Nd:YSAG crystal is used as the gain medium and the LD pump source of 808 nm is used to produce a pulsed laser of 1.06 渭 m. As a core part of passive Q-switched lasers, the development of saturable absorbers has attracted much attention. The response time of the high quality saturated absorber is super fast, and it should have the characteristics of wider absorption bandwidth and higher third-order nonlinear coefficient. This paper mainly introduces the development of solid-state laser and fiber laser, mainly introduces the passively Q-switched laser technology, and introduces the basic working principle of laser and the theory of Q-switched technology. Several kinds of laser crystals are introduced in detail. The working characteristics of ND: YVOs _ 4 crystal with Nd:YSAG crystal ND: LGGG are briefly introduced. The advantages and disadvantages of each crystal are described. The advantage of Nd:YSAG crystal compared with Nd:YVO_4 crystal as gain medium. 3. A variety of SAs are systematically described, including conventional SA:Cr~(4: YAG crystals, semiconductor saturable absorption mirrors (SESAM) and new SA: graphene, carbon nanotubes (CNTs). The working characteristics of gold nanomaterials and gold nanorods are described systematically. 4. Using gold nanorods with a aspect ratio of 6.75 as SAs, the laser characteristics of ND: LGGG laser ND: YVO4 laser have been studied. A 1.06 渭 m laser has been obtained. The pulse frequency is relatively high and the peak power is 5. Main innovation points: gold nanorods are used as saturable absorbers for the first time in all-solid-state lasers, and 1.06 渭 m laser output with high frequency and high power is obtained. The working characteristics of Nd:YSAG crystal as gain medium are studied.
【學(xué)位授予單位】：山東師范大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN248

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 邵磊;阮琦鋒;王建方;林海青;;局域表面等離激元[J];物理;2014年05期

2 朱攀;桑梅;王曉龍;劉珂;楊天新;;Z掃描法測單壁碳納米管薄膜非線性特性的研究[J];激光與光電子學(xué)進(jìn)展;2012年09期

3 王慧娟;薛晨陽;袁艷玲;;金納米顆粒制備及其光學(xué)特性研究[J];傳感技術(shù)學(xué)報;2011年01期

4 樓祺洪;周軍;張海波;袁志軍;;大芯徑光纖激光器的新進(jìn)展(邀請論文)[J];中國激光;2010年09期

5 申人升;張玉書;杜國同;;光纖激光器研究進(jìn)展[J];半導(dǎo)體光電;2009年01期

6 蔡虹;周軍;馮濤;章健;漆云鳳;樓祺洪;蔣丹宇;安麗瓊;王士維;董景星;魏運(yùn)榮;;國產(chǎn)摻Nd~(3+)透明薄片陶瓷的光學(xué)性能研究[J];光子學(xué)報;2009年02期

7 陳海燕;;基于碳納米管飽和吸收體的光纖激光器[J];光通信技術(shù);2008年12期

8 劉頌豪;光纖激光器的新進(jìn)展[J];光電子技術(shù)與信息;2003年01期

9 杜衛(wèi)沖;IPG高功率光纖激光器[J];激光與光電子學(xué)進(jìn)展;2002年10期

10 侯洵;超短脈沖激光及其應(yīng)用[J];空軍工程大學(xué)學(xué)報(自然科學(xué)版);2000年01期

相關(guān)博士學(xué)位論文 前1條

1 江曼;石墨烯、碳納米管可飽和吸收體的制備及其用于被動調(diào)Q/鎖模激光器的實驗研究[D];西北大學(xué);2013年

相關(guān)碩士學(xué)位論文 前3條

1 付秀偉;Nd：Re_xGd_(3-x)Ga_5O_(12)（Re=Lu~(3+)，，La~(3+)）激光晶體的生長和性能表征[D];山東大學(xué);2013年

2 段曉磊;基于SESAM的鎖模光纖激光器研究[D];北京交通大學(xué);2013年

3 唐艷;1123 nm陶瓷Nd:YAG固體激光器的實驗與理論研究[D];山東大學(xué);2011年

本文編號：1827880