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論文中文名稱:以二位元相位光柵之第一階繞射光強度量測空間光調變器之相位調變特性 [以論文名稱查詢館藏系統]
論文英文名稱:Characterization of spatial light modulator using the first-order diffraction of binary phase gratings [以論文名稱查詢館藏系統]
院校名稱:臺北科技大學
學院名稱:電資學院
系所名稱:光電工程系
畢業學年度:106
畢業學期:第一學期
出版年度:106
中文姓名:郭子豪
英文姓名:Zi-Hao Guo
研究生學號:104658015
學位類別:碩士
語文別:中文
口試日期:2018/01/29
論文頁數:52
指導教授中文名:徐巍峰
口試委員中文名:林世聰;林正峰
中文關鍵詞:空間光調變器全像投影繞射光學元件傅立葉光學
英文關鍵詞:Spatial Light ModulatorHolographic ProjectionDiffractive Optical ElementFourier Optics
論文中文摘要:  本報告研究之元件為矽基型液晶空間光調變器(Liquid Crystal on Silicon-Spatial Light Modulator, LCOS-SLM),是一種反射式空間光調變器,其工作原理是藉由改變外加電場的大小或驅動電壓的頻率來造成液晶分子產生不同旋扭方向,進而造成光波的相位延遲。矽基型液晶空間光調變器可以應用於投影系統及光斑消除等。本實驗使用之矽基型液晶空間光調變器為HOLOEYE公司的產品PLUTO,在應用上產生很大的雜訊,因此,我們將量測它的振幅調變及相位調變特性。
  量測方法是藉由在空間光調變器上播放二位元相位光柵,其反射的第一階繞射光強度可以計算出空間光調變器相位延遲量,藉著使用不同的基底相位,我們量出9組一階繞射效率函數,再藉由最佳化演算法找出SLM的灰階-相位延遲的特性曲線。此一結果將大大降低實驗室的相關研究誤差。
論文英文摘要:The liquid-crystal-on-silicon spatial light modulator (LCoS-SLM) is an element which modulates the amplitude and the phase of plane wave. LCoS-SLM provides a relative phase delay to the incident light depending on the applied voltage which is controlled by a computer. In contrast to the traditional diffractive optical elements, LCoS-SLM can be more convenient and fast used in many applications such as image projection displays and speckle reductions.
The measuring mechanism is that we display binary phase grating on LCOS and calculate the phase delay of LCOS by the first-order diffractive intensity. 9 sets of first-order diffraction efficiency functions are obtained and an optimal algorithm is employed to seize the gray-level phase delay curve of LCOS. This experimental result can significantly reduce the inaccuracy in relevant research in our laboratory.
論文目次:摘 要 i
誌 謝 iv
目 錄 v
表目錄 vii
圖目錄 viii
第一章 緒論 1
1.1 繞射光學元件概論 1
1.1.1 振幅式繞射光學元件 1
1.1.2 相位式繞射光學元件 1
1.2空間光調變器之繞射元件應用 2
1.3 研究動機 2
1.4 章節介紹 3
第二章 液晶光學特性與液晶空間光調變器 4
2.1 液晶(LIQUID CRYSTAL, LC) 4
2.1.1 常見的液晶分子排列 4
2.2 液晶工作原理 6
2.2.1 液晶相位調變原理 6
2.2.2 液晶振幅調變原理 8
2.3 液晶空間光調變器 9
2.3.1 穿透式液晶空間光調變器 9
2.3.2 反射式液晶空間光調變器 9
第三章 量測液晶空間光調變器相位調變特性 12
3.1 干涉式量測 12
3.2 繞射式量測 14
3.2.1 Fraunhofer Diffraction Method 14
3.2.2 Fractional-Talbot effect方法 16
3.3 偏振式量測 18
第四章 二位元相位光柵量測一階繞射之原理 20
4.1 繞射光學介紹 20
4.2 純量繞射光學 20
4.2.1 近場繞射公式 21
4.2.2 遠場繞射公式 21
4.3 液晶空間光調變器之繞射光場分析 22
4.3.1二位元相位光柵之繞射光場分析 22
4.3.2 液晶空間光調變器像素間隙之光場分析 26
4.3.3 二位元相位光柵在像素間隙之光場分析 29
第五章 量測液晶空間光調變器之振幅與相位調變特性 31
5.1 量測液晶空間光調變器振幅調變特性 31
5.2 量測液晶空間光調變器相位調變特性 33
第六章 實驗結果與討論 48
參考文獻 52
論文參考文獻:[1] E. Buckley, "Holographic laser projection," Journal of display technology, vol. 7, no. 3, pp. 135-140, 2011.
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[3] H.-K. Liu and T.-H. Chao, "Liquid crystal television spatial light modulators," Applied optics, vol. 28, no. 22, pp. 4772-4780, 1989.
[4] G. Lazarev, A. Hermerschmidt, S. Krüger, and S. Osten, "LCOS spatial light modulators: trends and applications," Optical Imaging and Metrology: Advanced Technologies, pp. 1-29, 2012.
[5] H. Zhang, J. Zhang, and L. Wu, "Evaluation of phase-only liquid crystal spatial light modulator for phase modulation performance using a Twyman–Green interferometer," Measurement Science and Technology, vol. 18, no. 6, p. 1724, 2007.
[6] Z. Zhang, G. Lu, and T. Francis, "Simple method for measuring phase modulation in liquid crystal televisions," Optical Engineering, vol. 33, no. 9, pp. 3018-3023, 1994.
[7] A. Serrano-Heredia, G. Lu, P. Purwosumarto, and T. Francis, "Measurement of the phase modulation in liquid crystal television based on the fractional-Talbot effect," Optical Engineering, vol. 35, no. 9, pp. 2680-2685, 1996.
[8] C. Ramirez, B. Karakus, A. Lizana, and J. Campos, "Polarimetric method for liquid crystal displays characterization in presence of phase fluctuations," Optics express, vol. 21, no. 3, pp. 3182-3192, 2013.
論文全文使用權限:同意授權於2018-02-22起公開