發(fā)布時(shí)間：2018-09-08 12:41

【摘要】：光子晶體是近年來人們提出的一種由人工制備而獲得的光子結(jié)構(gòu),因?yàn)槠涮厥獾墓庾訋�隙特征可以�?duì)光波進(jìn)行調(diào)控而被稱為“光半導(dǎo)體”,光子晶體以其獨(dú)特的優(yōu)勢(shì)吸引了物理學(xué)、材料學(xué)等多個(gè)領(lǐng)域科研工作者們的興趣,并有相當(dāng)多的科研小組致力于制備性能優(yōu)異的光子晶體器件。但是在有關(guān)光子晶體應(yīng)用的報(bào)道中,大多數(shù)是基于光子晶體的振幅和頻率特性而提出的,而基于相位特性的光子晶體器件報(bào)道較少。作為光波的一個(gè)重要參量,相位在光波調(diào)控中也同樣起著至關(guān)重要的作用,因此對(duì)光子晶體的相位特征進(jìn)行實(shí)驗(yàn)研究具有重要的應(yīng)用意義。本論文基于激光全息光刻技術(shù),利用重鉻酸鹽明膠(DCG)感光材料制備了一維層狀光子晶體;搭建白光干涉測(cè)量系統(tǒng),對(duì)所制備的層狀光子晶體進(jìn)行了帶隙內(nèi)反射相位的測(cè)量研究。具體研究?jī)?nèi)容如下:1介紹了光子晶體的概念,光子晶體的發(fā)展前景、研究現(xiàn)狀以及常用的制作方法,分析了光子晶體的相位特征及其潛在的應(yīng)用。并基于全息光刻技術(shù),利用DCG感光材料的自支撐特性,采用不同的實(shí)驗(yàn)條件制備了層狀光子晶體。2使用光纖光譜儀對(duì)所制備的層狀光子晶體進(jìn)行了帶隙光譜測(cè)量與分析。測(cè)量結(jié)果表明,利用DCG材料可獲得帶隙品質(zhì)良好的層狀光子結(jié)構(gòu),隨著制備入射角的增大,光子帶隙位置往長(zhǎng)波方向移動(dòng);利用掃描電子顯微鏡對(duì)所制備的樣品層狀結(jié)構(gòu)進(jìn)行了測(cè)試表征。3搭建了白光干涉相位測(cè)量系統(tǒng),分析了基于雙光束干涉的相位測(cè)量原理與數(shù)據(jù)處理方法;為了對(duì)比分析光子晶體對(duì)光波產(chǎn)生的反射相位特性,首先對(duì)均勻光學(xué)玻璃和DCG光刻膠膜層的反射相位進(jìn)行了測(cè)量;在此基礎(chǔ)上對(duì)所制備的層狀光子晶體帶隙內(nèi)的反射相位進(jìn)行了測(cè)量研究與分析,結(jié)果與文獻(xiàn)給出的理論分析結(jié)果相吻合。
[Abstract]:Photonic crystal is a kind of photonic structure obtained by artificial fabrication in recent years. It is called "optical semiconductor" because its special photonic band gap characteristics can regulate the light wave. Photonic crystals have attracted the interest of many researchers in physics, materials science and other fields because of their unique advantages, and a considerable number of research groups are devoted to the preparation of photonic crystal devices with excellent performance. However, most of the reports on the application of photonic crystals are based on the amplitude and frequency characteristics of photonic crystals, but there are few reports on photonic crystal devices based on phase characteristics. As an important parameter of light wave, phase also plays an important role in the control of light wave, so it is very important to study the phase characteristics of photonic crystal experimentally. Based on laser holographic lithography, one-dimensional layered photonic crystals were prepared by using dichromate gelatin (DCG) photosensitive materials, and a white light interferometry system was set up to measure the in-band reflection phase of the prepared layered photonic crystals. The main contents of this paper are as follows: 1. The concept of photonic crystal, the development prospect of photonic crystal, the present research situation and the common fabrication methods are introduced. The phase characteristics of photonic crystal and its potential application are analyzed. Based on holographic photolithography and using the self-supporting characteristics of DCG photosensitive materials, the layered photonic crystal .2 was prepared under different experimental conditions. The band gap spectrum of the layered photonic crystals was measured and analyzed by optical fiber spectrometer. The measurement results show that the layered photonic structure with good bandgap quality can be obtained by using the DCG material. With the increase of the incident angle, the position of the photonic band gap moves to the direction of long wave. The white light interferometric phase measurement system was constructed by using scanning electron microscope (SEM) to measure and characterize the layered structure of the sample. The principle and data processing method of phase measurement based on double beam interference were analyzed. In order to compare and analyze the reflection phase characteristics of photonic crystal to light wave, the reflection phase of homogeneous optical glass and DCG photoresist film is measured firstly. On this basis, the reflection phase in the band gap of the layered photonic crystal is measured and analyzed. The results are in agreement with the theoretical results given in the literature.
【學(xué)位授予單位】：青島科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：O734

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本文編號(hào)：2230554