(34.229.64.28) 您好!臺灣時間:2021/05/06 07:10
字體大小: 字級放大   字級縮小   預設字形  
回查詢結果

詳目顯示:::

我願授權國圖
: 
twitterline
研究生:陳立諺
研究生(外文):Li-Yan Chen
論文名稱:圓偏振入射光對三維物體產生之光作用力與光力矩之研究
論文名稱(外文):Research on the Optical Force and Optical Torque of Circularly Polarized Incident Light on Three-Dimensional Objects
指導教授:欒丕綱
指導教授(外文):Pi-Gang Luan
學位類別:碩士
校院名稱:國立中央大學
系所名稱:照明與顯示科技研究所
學門:工程學門
學類:電資工程學類
論文出版年:2020
畢業學年度:108
語文別:中文
論文頁數:90
中文關鍵詞:光作用力光力矩
外文關鍵詞:Optical ForceOptical Torque
相關次數:
  • 被引用被引用:0
  • 點閱點閱:21
  • 評分評分:系統版面圖檔系統版面圖檔系統版面圖檔系統版面圖檔系統版面圖檔
  • 下載下載:0
  • 收藏至我的研究室書目清單書目收藏:0
本篇論文考量三維幾何結構對光作用力與光力矩變化。我們選用不同波長的圓偏振入射光源,透過有限元素法得到介電質表面電磁場分布,代入馬克斯威爾應力方程得到每一網格點之的光應力,將每網格點光作用力,對位置向量進行外積,接著加總每網格的光力矩,得到全體三維結構之光力矩。接著分析局部結構電場分布與光力矩振盪表現,透過篩選不同入射波長,達到光操作物體旋轉方向的成效,並以圓盤結構為基礎,延伸設計為各樣結構進行分析,觀察其光力矩振盪行為變化。

最後給出我們自行提出的5-layer結構,此設計於1.66 um ~0.62 um處皆為正光力矩,而0.62 um ~0.51 um皆為負光力矩,在特定波長達到正負力矩一分為二的效果,除此之外,y分量與z分量之光力矩於1.66 um~0.51 um波長內皆趨於零,成功降低其正負光力矩對波長之振盪行為,其設計優勢將光操作物體旋轉領域,帶來全新穩定操作微米物質旋轉的成果。
In this thesis, we discuss the optical force and optical torque of circularly polarized incident light on three-dimensional objects. We use circularly polarized light as incident light in different wavelengths. The electromagnetic field distribution on the grid surface is obtained by the finite element method, and the light stress on each grid point is obtained from Maxwell's stress equation, and the overall optical force is evaluated by summing over the contributions from all grid points. Similarly, to calculate the optical torque of a three-dimensional object, we first calculate at each grid point the cross product of the position vector and the optical force, then sum over the surface contributions from the whole geometric structure. We analyzed the surface distribution of the electric field and the local oscillation behavior of the optical torque density on the surfaces of various three-dimensional structures. These results provide us with the information on how to change the wavelength of incident light to control the direction of rotation. Based on the knowledge obtained in the study of disc structures, we further designed various structures and analyzed their optical torque oscillation characteristics.

Finally, we proposed a 5-layer structure. This design has positive optical torque in 1.66 um ~ 0.62 um, and negative optical torque in 0.62 um ~ 0.51 um. In addition, the optical torque of the y and z components approach zero within the wavelength of 1.66 um ~ 0.51 um. This structure successfully reduces the unwanted oscillation behavior of the optical torque appearing in the positive or negative region, and thus has the advantage of providing the necessary stability in controlling the rotation direction of microscopic structures.
摘要 V
Abstract I
致謝 II
目錄 i
圖目錄 iv
第一章 緒論 1
1-1 前言 1
1-2 歷史背景 2
1-3 文獻回顧 3
1-3-1光鉗 3
1-3-1矩形共振波導 5
1-3-2光子晶體波導 6
1-3-3 環形共振波導 8
1-3-2光學角動量的力矩效應 10
1-4 論文架構 13
第二章 理論與方法 14
2-1 馬克斯威爾方程組與邊界條件 14
2-1-1波動方程 16
2-1-2馬克斯威爾張量應力 17
2-1-3光力矩計算 19
2-2平面波與圓偏振光線 20
第三章 結果與討論 22
3-1 模擬架構 22
3-1-1 基本參數設定 22
3-1-2 邊界條件設定 23
3-1-3 網格設定 24
3-2 圓盤介電質 26
3-2-1 Fabry-Perot 反射率計算 27
3-2-2 圓盤光作用力和力矩 28
3-2-2 圓盤區域光力和光力矩分析 30
3-2-3 圓盤力矩反轉歸一電場分布 33
3-2-4 圓盤z方向切線力矩變化趨勢分析 34
3-2-4-1 z方向切線力矩下降區段電場分析 35
3-2-4-2 z方向切線力矩上升區段電場分析 38
3-2-5 圓盤x方向力矩變化趨勢分析 41
3-2-5-1 x方向力矩下降區段電場分析 42
3-2-5-1 x方向力矩上升區段電場分析 45
3-2-6 圓盤折射率分析 48
3-2-7 圓盤半徑分析 49
3-2-8 圓盤厚度分析 51
3-2-9 圓盤不同角度入射分析 55
3-2-10 圓盤於線偏振入射光分析 56
3-2-11 圓盤於橢圓偏振入射光分析 57
3-3 橢圓盤介電質 59
3-3-1 橢圓盤光作用力與光力矩 60
3-2-3 圓盤缺角介電質 62
3-2-4 5-layer介電質 64
第四章 結論與未來展望 68
4-1 結論 68
4-2 未來與展望 71
參考文獻 72
[1] Ashkin, A., "Acceleration and Trapping of Particles by Radiation Pressure," Physical Review Letters 24, 156 (1970).
[2] Ashkin, A. and J. M. Dziedzic, "Observation of Resonances in the Radiation Pressure on Dielectric Spheres," Physical Review Letters 38, 1351 (1977).
[3] Ashkin, A., J. M. Dziedzic, J. E. Bjorkholm and S. Chu., "Observation of a single-beam gradient force optical trap for dielectric particles," Optics Letters 11, 288 (1986).
[4] Phillips, W. D., "Nobel Lecture: Laser cooling and trapping of neutral atoms," Reviews of Modern Physics 70, 721 (1998).
[5] Steane, A. M., M. Chowdhury and C. J. Foot., "Radiation force in the magneto-optical trap," Journal of the Optical Society of America B 9, 2142 (1992).
[6] Zhang, H. and K.-K. Liu., "Optical tweezers for single cells," Journal of the Royal Society, Interface 5, 671 (2008).
[7] Zhong, M. C., X. B. Wei, J. H. Zhou, Z. Q. Wang and Y. M. Li., "Trapping red blood cells in living animals using optical tweezers," Nature Communications 4, 1768 (2013).
[8] Zhang, Z., T. E. P. Kimkes and M. Heinemann., "Manipulating rod-shaped bacteria with optical tweezers," Scientific Reports 9, 19086 (2019).
[9] Povinelli, M. L., M. Lončar, M. Ibanescu, E. J. Smythe, S. G. Johnson, F. Capasso and J. D. Joannopoulos., "Evanescent-wave bonding between optical waveguides," Optics Letters 30, 3042 (2005).
[10] Ma, J. and M. L. Povinelli., "Large tuning of birefringence in two strip silicon waveguides via optomechanical motion." Optics Express 17, 17818 (2009).
[11] 欒丕綱、陳啟昌--光子晶體 (從蝴蝶翅膀到奈米光子學),第二版,五南出版社 (2010).
[12] Pernice, W. H. P., M. Li and H. X. Tang., "Theoretical investigation of the transverse optical force between a silicon nanowire waveguide and a substrate," Optics Express 17, 1806 (2009).
[13] Eichenfield, M., J. Chan, R. M. Camacho, K. J. Vahala and O. Painter., "Optomechanical crystals," Nature 462, 78 (2009).
[14] Chan, J., M. Eichenfield, R. Camacho and O. Painter., "Optical and mechanical design of a “zipper” photonic crystal optomechanical cavity," Optics Express 17, 3802 (2009).
[15] Wiederhecker, G. S., L. Chen, A. Gondarenko and M. Lipson., "Controlling photonic structures using optical forces," Nature 462, 633 (2009).
[16] Van Thourhout, D. and J. Roels., "Optomechanical device actuation through the optical gradient force," Nature Photonics 4, 211 (2010).
[17] Einat, A. and U. Levy., "Analysis of the optical force in the Micro Ring Resonator," Optics Express 19, 20405 (2011).
[18] Li, M., S. Yan, B. Yao, Y. Liang and P. Zhang., "Spinning and orbiting motion of particles in vortex beams with circular or radial polarizations," Optics Express 24, 20604 (2016).
[19] Diniz, K., R. S. Dutra, L. B. Pires, N. B. Viana, H. M. Nussenzveig and P. A. Maia Neto., "Negative optical torque on a microsphere in optical tweezers," Optics Express 27, 5905 (2019).
[20] Chen, J., J. Ng, K. Ding, K. H. Fung, Z. Lin and C. T. Chan., "Negative optical torque," Scientific Reports 4, 6386 (2014).
[21] Han, F., J. A. Parker, Y. Yifat, C. Peterson, S. K. Gray, N. F. Scherer and Z. Yan ., "Crossover from positive to negative optical torque in mesoscale optical matter," Nature Communications 9, 4897 (2018).
[22] David J. Griffiths, “Introduction to Electrodynamics,” 3rd Edition, ‎Cambridge University Press (1999).
[23] Coggon, J. H.., "ELECTROMAGNETIC AND ELECTRICAL MODELING BY THE FINITE ELEMENT METHOD," GEOPHYSICS 36, 132 (1971).
[24] 皮托科技, COMSOL Multiphysics 電磁模擬有限元素分析
連結至畢業學校之論文網頁點我開啟連結
註: 此連結為研究生畢業學校所提供,不一定有電子全文可供下載,若連結有誤,請點選上方之〝勘誤回報〞功能,我們會盡快修正,謝謝!
QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top
系統版面圖檔 系統版面圖檔