光折變光子微結(jié)構(gòu)的制備及其表征
發(fā)布時間：2018-07-16 18:47
【摘要】：光子微結(jié)構(gòu)是一種性能優(yōu)異的光子學(xué)材料,在實現(xiàn)人為操控光子運動方面具有十分誘人的應(yīng)用前景,同時也為開發(fā)全光通信所需的光子學(xué)器件提供了新的可能。光子微結(jié)構(gòu)制備技術(shù)的成熟和完善對推動光子微結(jié)構(gòu)的研究深入以及實用化方面都具有重要的意義。然而,傳統(tǒng)制備光子微結(jié)構(gòu)的方法往往具有一定的局限性,存在設(shè)備復(fù)雜,制備難度大,結(jié)構(gòu)單一,靈活程度低,制作效率不高,成本昂貴,不利于大規(guī)模生產(chǎn)等缺點。光感應(yīng)技術(shù)是近些年發(fā)展起來的一種制備光子微結(jié)構(gòu)的新方法。它主要利用光折變介質(zhì)的光致折射率變化特性,通過調(diào)制入射光的空間強度分布來形成折射率微結(jié)構(gòu),具有簡便、靈活、成本低、易于實現(xiàn)、材料可循環(huán)使用等優(yōu)勢。目前絕大部分有關(guān)光感應(yīng)法制備光子微結(jié)構(gòu)的報道都制作的是周期性微結(jié)構(gòu),且普遍存在制作面積小,效率不高等問題。對于折射率分布呈現(xiàn)非周期形態(tài)的復(fù)雜光子微結(jié)構(gòu)(如準(zhǔn)晶光子微結(jié)構(gòu)和復(fù)合周期光子微結(jié)構(gòu)),由于制作難度大,相關(guān)的研究進(jìn)展一直較為緩慢。針對上述問題,本論文以光感應(yīng)技術(shù)為基礎(chǔ),對在摻鐵鈮酸鋰光折變晶體中制作各種類型光子微結(jié)構(gòu)進(jìn)行了系統(tǒng)深入的研究。論文的主要工作和創(chuàng)新點如下：1.提出了一種非常簡單、廉價的實驗裝置,利用多針孔板和透鏡傅里葉變換相結(jié)合的方式實現(xiàn)了任意多束相干平面波的干涉�？朔藗鹘y(tǒng)多光束干涉裝置復(fù)雜,難以調(diào)節(jié),不易于實現(xiàn)的缺點,并具有靈活的可擴(kuò)展性。在摻鐵鈮酸鋰晶體中首次制作出二維和三維的準(zhǔn)晶形態(tài)光子微結(jié)構(gòu)。進(jìn)一步使用導(dǎo)波強度圖像、遠(yuǎn)場衍射圖案,以及布里淵區(qū)光譜等實驗手段對晶體內(nèi)制作的準(zhǔn)晶光子微結(jié)構(gòu)進(jìn)行了驗證和表征。2.針對目前光子微結(jié)構(gòu)制備效率低,制作面積普遍偏小的缺點,提出了兩種在光折變材料中制備大面積二維光子微結(jié)構(gòu)的實驗方案,分別使用多透鏡板和多楔面棱鏡的方法來產(chǎn)生大面積多光束干涉光場。這兩種方法都比較簡單,不需要復(fù)雜的調(diào)節(jié)裝置,穩(wěn)定性好,成本低,制作效率高。在摻鐵鈮酸鋰晶體中制作出了大面積的二維周期性光子微結(jié)構(gòu)和準(zhǔn)晶光子微結(jié)構(gòu),極大地提高了光折變光子微結(jié)構(gòu)的制備效率。并使用多種實驗方法對制作的大面積光子微結(jié)構(gòu)進(jìn)行了驗證和分析。多透鏡板和多楔面棱鏡的方法都具有良好的可擴(kuò)展性,通過適當(dāng)?shù)脑O(shè)計能夠制作多種更復(fù)雜的大面積光子微結(jié)構(gòu)。3.首次在鈮酸鋰類晶體中制作出復(fù)雜類型光子微結(jié)構(gòu)。使用多光束干涉和投影成像的方法在摻鐵鈮酸鋰晶體中分別制作了復(fù)合周期光子微結(jié)構(gòu)、波浪狀柵格微結(jié)構(gòu),以及帶有點狀、線狀、點陣缺陷的光子微結(jié)構(gòu)。這些工作成功地解決了傳統(tǒng)光子微結(jié)構(gòu)制備技術(shù)中不易引入缺陷和難以實現(xiàn)任意形狀光子微結(jié)構(gòu)制備的難題。兩種制作方法都具有易于操作,可擴(kuò)展性強的優(yōu)點。制作的復(fù)雜類型光子微結(jié)構(gòu)為研究光學(xué)微腔和微結(jié)構(gòu)波導(dǎo)的非線性光學(xué)特性提供了一個良好的實驗媒介,在集成光學(xué)和微結(jié)構(gòu)光波導(dǎo)器件領(lǐng)域具有良好的應(yīng)用前景。4.利用光學(xué)上的布拉格衍射現(xiàn)象對制作的光折變光子微結(jié)構(gòu)進(jìn)行定量分析。以制作的二維大面積四方晶格光子微結(jié)構(gòu)為測試對象,從實驗上對光子微結(jié)構(gòu)進(jìn)行了布拉格衍射測量。通過探測光正向入射和側(cè)向入射兩種方式,對光子微結(jié)構(gòu)的折射率晶面間距進(jìn)行了測定,實驗結(jié)果和理論預(yù)測相吻合。對光子微結(jié)構(gòu)進(jìn)行布拉格衍射特性分析,使我們掌握了一種定量表征光子微結(jié)構(gòu)的方法。這些工作有利于進(jìn)一步量化研究光子微結(jié)構(gòu)的各種特性,促進(jìn)相關(guān)微結(jié)構(gòu)光子器件的開發(fā)和應(yīng)用。
[Abstract]:Photonic microstructures is a kind of excellent photonics material. It has a very attractive application prospect in the realization of human manipulation of photon motion. It also provides a new possibility for the development of photonics devices needed for all optical communication. However, the traditional methods of fabrication of photonic microstructures are often limited. There are complex equipment, difficult preparation, single structure, low flexibility, low production efficiency and high cost, which are not conducive to large scale production. A new method of submicrostructures. It mainly uses the photorefractive refractive index change characteristics of the photorefractive medium to form the refractive index microstructures by modulating the spatial intensity distribution of the incident light. It has the advantages of simple, flexible, low cost, easy to realize, and recycled materials. The fabrication is periodic microstructures, and there is a general problem of small production area and low efficiency. For the complex photonic microstructures, such as quasicrystal photon microstructures and complex periodic photon microstructures, which have a non periodic form of refractive index distribution, the related research progress has been slow because of the difficulty in making the refractive index. Based on optical induction technology, the fabrication of various types of photonic microstructures in iron doped lithium niobate photorefractive crystals is systematically studied. The main work and innovation of this paper are as follows: 1. a very simple and cheap experimental device is proposed, which is realized by the combination of multi pinhole plate and mirror Fourier transform. The interference of the coherent multi beam coherent plane waves overcomes the shortcomings of the traditional multi beam interferometer, which is difficult to adjust and can not be easily realized, and has the flexibility of extensibility. For the first time, two and three dimensional quasicrystal photonic microstructures have been fabricated in the lithium doped lithium niobate crystal. The further use of the guided wave intensity image, the far-field diffraction pattern, and the brie are also used. The microstructures of quasicrystal photons made in the crystal are verified and characterized by the abyss spectroscopy. Two kinds of Photorefractive Photonic microstructures in photorefractive materials are proposed for the low efficiency of the photonic microstructures and the small size of the fabrication area in the photorefractive materials. Two kinds of Photorefractive Photonic microstructures are used in the photorefractive materials, and the multi lens and multi wedge surfaces are used respectively. The prism method produces large area and multi beam interference light fields. These two methods are relatively simple, do not need complex regulators, have good stability, low cost, and high efficiency. A large area of two-dimensional periodic photon microstructures and quasicrystal photonic microstructures have been produced in the lithium doped lithium niobate crystal, which greatly improves the photorefractive photon microstructures. A variety of experimental methods have been used to verify and analyze the large area photonic microstructures made by a variety of experimental methods. The methods of multi lens and multi wedge prisms have good extensibility. Through appropriate design, a variety of more complex large area photonic microstructures.3. can be produced in lithium niobate crystals for the first time. Complex photonic microstructures have been fabricated by multi beam interference and projection imaging in the iron doped lithium niobate crystals. The photonic microstructures, wavy grid microstructures, and photon microstructures with dot, linear and dot matrix defects have been successfully solved in the traditional photonic microstructure preparation technology. The two fabrication methods are easy to operate and have strong extensibility. The fabrication of Complex Photonic microstructures provides a good experimental medium for the study of the nonlinear optical properties of optical microcavity and microstructural waveguides, and the integrated optics and microstructures are integrated. The field of optical waveguide devices has a good prospect in the field of.4.. The photorefractive photon microstructures produced by the optical Prague diffraction are quantitatively analyzed. The photon microstructures of a two-dimensional large square square lattice are made as the test object, and the micro structure of the photons is measured in Prague. Two methods of incidence and lateral incidence are used to determine the spacing of the refractive index of the photon microstructures. The experimental results are in agreement with the theoretical prediction. The analysis of the diffraction characteristics of the photonic microstructures in Prague makes us master a method of quantitative characterization of the photonic microstructures. These work are beneficial to the further quantitative study of the photonic microstructures. These characteristics promote the development and application of photonic devices related to microstructures.
【學(xué)位授予單位】：華東師范大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2016
【分類號】：TN204
，
本文編號：2127305
[Abstract]:Photonic microstructures is a kind of excellent photonics material. It has a very attractive application prospect in the realization of human manipulation of photon motion. It also provides a new possibility for the development of photonics devices needed for all optical communication. However, the traditional methods of fabrication of photonic microstructures are often limited. There are complex equipment, difficult preparation, single structure, low flexibility, low production efficiency and high cost, which are not conducive to large scale production. A new method of submicrostructures. It mainly uses the photorefractive refractive index change characteristics of the photorefractive medium to form the refractive index microstructures by modulating the spatial intensity distribution of the incident light. It has the advantages of simple, flexible, low cost, easy to realize, and recycled materials. The fabrication is periodic microstructures, and there is a general problem of small production area and low efficiency. For the complex photonic microstructures, such as quasicrystal photon microstructures and complex periodic photon microstructures, which have a non periodic form of refractive index distribution, the related research progress has been slow because of the difficulty in making the refractive index. Based on optical induction technology, the fabrication of various types of photonic microstructures in iron doped lithium niobate photorefractive crystals is systematically studied. The main work and innovation of this paper are as follows: 1. a very simple and cheap experimental device is proposed, which is realized by the combination of multi pinhole plate and mirror Fourier transform. The interference of the coherent multi beam coherent plane waves overcomes the shortcomings of the traditional multi beam interferometer, which is difficult to adjust and can not be easily realized, and has the flexibility of extensibility. For the first time, two and three dimensional quasicrystal photonic microstructures have been fabricated in the lithium doped lithium niobate crystal. The further use of the guided wave intensity image, the far-field diffraction pattern, and the brie are also used. The microstructures of quasicrystal photons made in the crystal are verified and characterized by the abyss spectroscopy. Two kinds of Photorefractive Photonic microstructures in photorefractive materials are proposed for the low efficiency of the photonic microstructures and the small size of the fabrication area in the photorefractive materials. Two kinds of Photorefractive Photonic microstructures are used in the photorefractive materials, and the multi lens and multi wedge surfaces are used respectively. The prism method produces large area and multi beam interference light fields. These two methods are relatively simple, do not need complex regulators, have good stability, low cost, and high efficiency. A large area of two-dimensional periodic photon microstructures and quasicrystal photonic microstructures have been produced in the lithium doped lithium niobate crystal, which greatly improves the photorefractive photon microstructures. A variety of experimental methods have been used to verify and analyze the large area photonic microstructures made by a variety of experimental methods. The methods of multi lens and multi wedge prisms have good extensibility. Through appropriate design, a variety of more complex large area photonic microstructures.3. can be produced in lithium niobate crystals for the first time. Complex photonic microstructures have been fabricated by multi beam interference and projection imaging in the iron doped lithium niobate crystals. The photonic microstructures, wavy grid microstructures, and photon microstructures with dot, linear and dot matrix defects have been successfully solved in the traditional photonic microstructure preparation technology. The two fabrication methods are easy to operate and have strong extensibility. The fabrication of Complex Photonic microstructures provides a good experimental medium for the study of the nonlinear optical properties of optical microcavity and microstructural waveguides, and the integrated optics and microstructures are integrated. The field of optical waveguide devices has a good prospect in the field of.4.. The photorefractive photon microstructures produced by the optical Prague diffraction are quantitatively analyzed. The photon microstructures of a two-dimensional large square square lattice are made as the test object, and the micro structure of the photons is measured in Prague. Two methods of incidence and lateral incidence are used to determine the spacing of the refractive index of the photon microstructures. The experimental results are in agreement with the theoretical prediction. The analysis of the diffraction characteristics of the photonic microstructures in Prague makes us master a method of quantitative characterization of the photonic microstructures. These work are beneficial to the further quantitative study of the photonic microstructures. These characteristics promote the development and application of photonic devices related to microstructures.
【學(xué)位授予單位】：華東師范大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2016
【分類號】：TN204
，
本文編號：2127305
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