本文關(guān)鍵詞： 飛秒激光 玻璃 功能晶體 晶體分布　出處：《華南理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：玻璃中析出功能晶體的研究已經(jīng)有很長的歷史,微晶玻璃在建筑、光學(xué)器件和人工關(guān)節(jié)等方面具有廣闊的應(yīng)用,近年來信息技術(shù)發(fā)展迅速,光學(xué)元件的微型化、集成化是光電子信息技術(shù)發(fā)展的助推劑,將功能晶體空間選擇性地集成在玻璃中能有效地促進(jìn)光學(xué)元件的微型化、集成化。傳統(tǒng)的熱處理方法并不能有效地控制功能晶體在玻璃中的析出。因而研究者嘗試研究在玻璃中控制析出功能晶體,以滿足當(dāng)今光電子技術(shù)中光學(xué)器件集成化與微型化的發(fā)展要求。飛秒激光(fs,10-15s)具有高度空間選擇性和超高脈沖峰值功率,在高重復(fù)頻率飛秒激光輻照玻璃過程中,由于非線性激發(fā)和非線性吸收作用,玻璃的輻照區(qū)能夠不斷積累熱量導(dǎo)致溫度上升。當(dāng)玻璃輻照區(qū)的局域溫度在晶體成核和生長溫度范圍內(nèi),功能晶體就會在玻璃中選擇性析出。本文運用高重復(fù)頻率飛秒激光在三個玻璃體系中誘導(dǎo)玻璃中不同功能晶體的析出,并對晶體分布進(jìn)行了相應(yīng)表征以及探索了其潛在應(yīng)用。具體可分為以下幾個方面:1.運用高重復(fù)頻率飛秒激光對Ba F2-Al2O3-B2O3體系玻璃進(jìn)行誘導(dǎo)處理,成功地實現(xiàn)了玻璃中深紫外非線性晶體Ba Al BO3F2的控制析出,并表征了晶體在誘導(dǎo)區(qū)的分布,研究了激光能量和曝光時間對Ba Al BO3F2晶體二次諧波強(qiáng)度的影響,最后探索了其用于產(chǎn)生深紫外相干光后應(yīng)用于3D集成光電子器件的可行性。2.運用高重復(fù)頻率飛秒激光實現(xiàn)了Si O2-Al2O3-Zn O-K2O體系玻璃中半導(dǎo)體Zn O晶體的析出控制。XRD和拉曼光譜用來表征玻璃中半導(dǎo)體Zn O晶體的析出。拉曼光譜和拉曼成像表征了輻照區(qū)Zn O晶體的析出分布,運用EPMA和計算模擬輻照區(qū)的溫度分布來分析Zn O晶體分布規(guī)律的形成機(jī)理。同時我們也研究了激光能量和曝光時間對Zn O晶體的析出含量影響�；诓Ａе衂n O晶體的可控微區(qū)熒光,我們探索了其作為三維光存儲器的應(yīng)用可行性。3.研究了Zn O-Te O2-P2O5體系玻璃的結(jié)構(gòu)與光學(xué)性能。利用吸收光譜,拉曼光譜和高分辨率透射電子顯微鏡(HRTEM)分析了玻璃顏色的起源和玻璃的網(wǎng)絡(luò)結(jié)構(gòu)。意外地是,我們并沒有發(fā)現(xiàn)這些磷碲酸鹽玻璃中存在Te金屬顆粒,卻出現(xiàn)了Zn Te量子點。同時我們用Z-掃描技術(shù)演示了這些含Zn Te量子點的玻璃的三階非線性光學(xué)性能。我們運用高重復(fù)頻率飛秒激光誘導(dǎo)了玻璃中半導(dǎo)體Zn Te納米晶體的析出重新分布,拉曼光譜和拉曼成像表征了Zn Te納米晶體的空間再分布規(guī)律。飛秒激光誘導(dǎo)玻璃中功能晶體的選擇性析出在集成光學(xué)器件方面具有誘人的應(yīng)用前景。
[Abstract]:The research of precipitated functional crystals in glass has a long history. Glass-ceramics have been widely used in architecture, optical devices and artificial joints. In recent years, information technology has developed rapidly and optical elements have been miniaturized. Integration is a booster for the development of optoelectronic information technology. The spatial selective integration of functional crystals in glass can effectively promote the miniaturization of optical elements. Integration. Traditional heat treatment methods can not effectively control the precipitation of functional crystals in glass, so researchers try to study the control of functional crystals in glass. In order to meet the needs of the integration and miniaturization of optical devices in optoelectronic technology, femtosecond laser fsn 10-15 s) has high spatial selectivity and high pulse peak power. In the process of high repetition rate femtosecond laser irradiation glass, nonlinear excitation and nonlinear absorption. When the local temperature of the irradiated region of glass is in the range of crystal nucleation and growth temperature. In this paper, the high repetition rate femtosecond laser is used to induce the precipitation of different functional crystals in three glass systems. The crystal distribution has been characterized and its potential application has been explored. It can be divided into the following aspects: 1. Using high repetition frequency femtosecond laser to Ba. F _ 2-Al _ 2O _ 3-B _ 2O _ 3 glasses were treated by induction. The controlled precipitation of Ba Al BO3F2, a deep ultraviolet nonlinear crystal in glass, was successfully realized, and the distribution of the crystal in the induced region was characterized. The effects of laser energy and exposure time on the second harmonic intensity of Ba Al BO3F2 crystal have been investigated. Finally, the feasibility of its application to 3D integrated optoelectronic devices after generating deep ultraviolet coherent light is explored. 2. The Sio _ 2-Al _ 2O _ 3-Zn is realized by using high repetition rate femtosecond laser. Precipitation Control. XRD and Raman Spectroscopy of Semiconductor Zn O in O-K2O system Glass to characterize Semiconductor Zn in Glass. The precipitation of O crystals was characterized by Raman spectroscopy and Raman imaging. The formation mechanism of Zno crystal distribution was analyzed by EPMA and the temperature distribution of simulated irradiation region. At the same time, we also studied the effect of laser energy and exposure time on Zn. Based on the controllable micro-region fluorescence of Zno crystal in glass, the precipitate content of O crystal is affected. We have explored the feasibility of its application as 3D optical memory. 3. The structure and optical properties of ZnO-Te O _ 2-P _ 2O _ 5 glasses have been studied. Raman spectroscopy and high resolution transmission electron microscopy (HRTEM) have analyzed the origin of glass color and the network structure of glass. We do not find Te particles in these phosphorous tellurite glasses. But there are Zn-Te quantum dots. And we have demonstrated these zinc-containing quantum dots using Z- scanning technology. The third order nonlinear optical properties of Te quantum dots. The precipitation redistribution of ZnTe nanocrystals in glass was induced by high repetition frequency femtosecond laser. The spatial redistribution of ZnTe nanocrystals was characterized by Raman spectroscopy and Raman imaging. The selective precipitation of functional crystals in glass induced by femtosecond laser has attractive applications in integrated optical devices.
【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TQ171.6

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