發(fā)布時(shí)間：2018-12-13 19:00

【摘要】：1.3μm波段激光在激光醫(yī)療、光譜學(xué)、光纖通信系統(tǒng)、軍事和倍頻紅光等方面有有重要的應(yīng)用前景，近年來成為激光研究的熱點(diǎn)。而27Al+光頻標(biāo)的發(fā)展迫切需要波長精度高、線寬窄、穩(wěn)定性好的1336.632nm激光器，本論文主要致力于該方面的研究。Nd:GYSGG晶體作為一種新型的晶體材料，具有很多優(yōu)點(diǎn)，如有效分凝系數(shù)大，熒光壽命長等，我們選用它作為增益介質(zhì)來產(chǎn)生1336.6nm激光，本論文的主要研究內(nèi)容如下： 1.研制成功1336nm窄線寬Nd:GYSGG扭轉(zhuǎn)模激光器。基于準(zhǔn)連續(xù)808nm LD側(cè)面泵浦Nd:GYSGG晶體結(jié)構(gòu)，電源脈沖重頻為10Hz，脈沖寬度為1ms，采用兩個(gè)λ/4波片和55.4°偏振片結(jié)合來消除光場(chǎng)在增益介質(zhì)中的駐波分布，從而獲得單波長激光輸出，并用雙折射濾光片和0.3mmFP標(biāo)準(zhǔn)具調(diào)諧，在平均泵浦功率為47W時(shí)，獲得了1.848W的1336.46nm激光輸出。 2.根據(jù)相關(guān)文獻(xiàn)的理論基礎(chǔ)確定了損耗差的計(jì)算方法，通過Matlab和Solidworks軟件完成單塊非平面環(huán)形腔的設(shè)計(jì)。 3.首次研制成功1336.6nm窄線寬聲光調(diào)Q Nd:GYSGG環(huán)形激光器�；�于準(zhǔn)連續(xù)808nm LD側(cè)面泵浦Nd:GYSGG晶體結(jié)構(gòu)，電源脈沖重頻為10Hz，脈沖寬度為1ms，在42.3W的平均泵浦功率下，首次獲得最大平均輸出功率367mW的1336.6nm可調(diào)諧激光輸出，在該功率處的線寬為0.85pm，脈寬和重頻分別為300ns和80Hz，，對(duì)應(yīng)的平均平均峰值功率為15.3kW。
[Abstract]:The 1.3 渭 m band laser has an important application prospect in the fields of laser medical treatment, spectroscopy, optical fiber communication system, military and frequency-doubling red light, etc. In recent years, it has become a hot spot in laser research. However, the development of 27Al optical frequency standard urgently needs 1336.632nm lasers with high wavelength accuracy, narrow line width and good stability. This thesis is mainly devoted to the research in this field. As a new crystal material, Nd:GYSGG crystal has many advantages. If the effective coagulation coefficient is large and the fluorescence lifetime is long, we choose it as the gain medium to generate 1336.6nm laser. The main contents of this thesis are as follows: 1. 1336nm narrow linewidth Nd:GYSGG torsion mode laser is successfully developed. Based on the quasi-continuous 808nm LD side-pumped Nd:GYSGG crystal structure, the power pulse repetition frequency is 10 Hz and the pulse width is 1 Ms. Two 位 / 4 wave plates and 55.4 擄polarizer are combined to eliminate the standing wave distribution of the optical field in the gain medium. The single wavelength laser output is obtained and tuned with birefringent filter and 0.3mmFP standard. When the average pump power is 47 W, the 1336.46nm laser output of 1.848 W is obtained. 2. According to the theoretical basis of relevant literature, the loss difference calculation method is determined, and the design of single block non-planar ring cavity is completed by Matlab and Solidworks software. 3. 1336.6nm narrow linewidth acoustooptic Q-switched Nd:GYSGG ring laser has been developed for the first time. Based on the quasi-continuous 808nm LD side-pumped Nd:GYSGG crystal structure, the power pulse repetition frequency is 10 Hz and the pulse width is 1 Ms. Under the average pumping power of 42.3 W, the 1336.6nm tunable laser output with the maximum average output power 367mW is obtained for the first time. The line width at this power is 0.85 pm, the pulse width and repetition frequency are 300ns and 80 Hz, respectively, and the corresponding average peak power is 15.3 kW.
【學(xué)位授予單位】：北京理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN24

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