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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 孫啟光(Chi-Kuang Sun) | |
dc.contributor.author | Yi-Hsin Chen | en |
dc.contributor.author | 陳奕欣 | zh_TW |
dc.date.accessioned | 2021-06-15T05:09:43Z | - |
dc.date.available | 2012-07-28 | |
dc.date.copyright | 2010-07-28 | |
dc.date.issued | 2010 | |
dc.date.submitted | 2010-07-23 | |
dc.identifier.citation | [1.1] C. Kittel, Introduction to Solid State Physics. 8th edition. New York: Wiley (2005).
[1.2] N. W. Ashcroft, and N. D. Mermin, Solid State Physics. Harcourt (1976). [1.3] M. Hu, X. Wang, G. Hartland, P. Mulvaney, J. Juste, and J. Saders, “Vibrational response of nanorods to ultrafast laser induced heating: Theoretical and experimental analysis,” J. Am. Chem. Soc, 125, 14925 (2003). [1.4] P. Yu, J. Tang, and S. H. Lin, 'Photoinduced structural dynamics in laser-heated nanomaterials of various shapes and sizes,' The Journal of Physical Chemistry C, 113, 7480 (2009). [1.5] M. Perner, S. Gresillon, J. Marz, G. Von Plessen, J. Feldmann, J. Porstendorfer, K. Berg, and G. Berg, 'Observation of hot-electron pressure in the vibration dynamics of metal nanoparticles,' Phys. Rev. Lett., 85, 792 (2000). [1.6] P. Zijlstra, A. Tchebotareva, J. Chon, M. Gu, and M. Orrit, 'Acoustic oscillations and elastic moduli of single gold nanorods,' Nano. Lett., 8, 3493 (2008). [1.7] G. Hartland, 'Coherent vibrational motion in metal particles: Determination of the vibrational amplitude and excitation mechanism,' The Journal of Chemical Physics, 116, 8048, (2002). [1.8] R. Fork, B. Greene, and C. Shank, 'Generation of optical pulses shorter than 0.1 psec by colliding pulse mode locking,' Appl. Phys. Lett., 38, 671 (1981). [1.9] C. Shank and E. Ippen, 'Subpicosecond kilowatt pulses from a mode locked CW dye laser,' Appl. Phys. Lett., 24, 373 (1974). [1.10] C. Shank, R. Fork, R. Leheny, and J. Shah, 'Dynamics of photoexcited GaAs band-edge absorption with subpicosecond resolution,' Phys. Rev. Lett., 42, 112 (1979). [1.11] D. Kim and P. Yu, 'Hot-electron relaxations and hot phonons in GaAs studied by subpicosecond raman scattering,' Phys. Rev. B, 43, 4158 (1991). [1.12] Z. Vardeny and J. Tauc, 'Picosecond coherence coupling in the pump and probe technique,' Optics Communications, 39, 396 (1981). [1.13] C. Thomsen, J. Strait, Z. Vardeny, H. Maris, J. Tauc, and J. Hauser, 'Coherent phonon generation and detection by picosecond light pulses,' Phys. Rev. Lett., 53, 989 (1984). [1.14] S. Wu, P. Geiser, J. Jun, J. Karpinski, and R. Sobolewski, 'Femtosecond optical generation and detection of coherent acoustic phonons in GaN single crystals,' Phys. Rev. B, 76, 85210 (2007). [1.15] C. K. Sun, J. C. Liang, and X. Y. Yu, 'Coherent acoustic phonon oscillations in semiconductor multiple quantum wells with piezoelectric fields,' Phys. Rev. Lett., 84, 179 (2000). [1.16] V. I. Colvin, M. C. Schlamp, and A. P. Alivisatos, 'Light-emitting diodes made from Cadmium Selenide nanocrystals and a semiconducting polymer,' Nature, 370, 354 (1994). [1.17] S. Coe, W. K. Woo, M. G. Bawendi, and V. Bulovic, 'Electroluminescence from single monolayers of nanocrystals in molecular organic devices,' Nature, 420, 800 (2002). [1.18] R. Elghanian, J. J. Storhoff, R. C. Mucic, R. I. Letsinger, and C. A. Mirkin, 'Selective colorimetric detection of polynucleotides based on the distance-dependent optical properties of gold nanoparticles,' Science, 277, 1078 (1997). [1.19] Y. Cui and C. M. Lieber, 'Functional nanoscale electronic devices assembled using silicon nanowire building blocks,' Science, 291, 851 (2001). [1.20] D. L. Klein, R. Roth, A. K. L. Lim, A. P. Alivisatos, and P. L. McEuen, 'A single-electron transistor made from a Cadmium Selenide nanocrystal,' Nature, 389, 699 (1997). [1.21] H. Y. Hao and H. J. Maris, 'Experiments with acoustic solitons in crystalline solids,' Phys. Rev. B, 64, 64302 (2001). [1.22] P. Hess and A. M. Lomonosov, 'Solitary surface acoustic waves and bulk solitons in nanosecond and picosecond laser ultrasonics,' Ultrasonics, 50, 167 (2010). [2.1] H. Kroger, E. W. Prohofsky, and H. R. Carleton, 'Current oscillations and collective waves in CdS,' Phys. Rev. Lett., 12, 555 (1964). [2.2] E. W. Prohofsky, 'Collective phonon-electron waves and oscillations in piezoelectric materials,' Phys. Rev., 136, 1731 (1964). [2.3] H. Lin, R. Stoner, H. Maris, and J. Tauc, 'Phonon attenuation and velocity measurements in transparent materials by picosecond acoustic interferometry,' J. Appl. Phys., 69, 3816 (1991). [2.4] G. W. Chern, K. H. Lin, and C. K. Sun, 'Transmission of light through quantum heterostructures modulated by coherent acoustic phonons,' J. Appl. Phys., 95, 1114 (2004). [2.5] C. K. Sun, J. C. Liang, C. J. Stanton, A. Abare, L. Coldren, and S. P. DenBaars, 'Large coherent acoustic-phonon oscillation observed in InGaN/GaN multiple-quantum wells,' Appl. Phys. Lett., 75, 1249 (1999). [2.6] C. K. Sun, Y. K. Huang, J. C. Liang, A. Abare, and S. P. DenBaars, 'Coherent optical control of acoustic phonon oscillations in InGaN/GaN multiple quantum wells,' Appl. Phys. Lett., 78, 1201, (2001). [2.7] P. H. Wang, Y. C. Wen, S. H. Guol, C. M. Lai, H. C. Lin, P. R. Chen, J. W. Shi, J. I. Chyi, and C. K. Sun, 'Electrically manipulating the optical sensitivity function in quantum wells for nanoacoustic wave detection,' Appl. Phys. Lett., 95, 3108 (2009). [2.8] C. Thomsen, H. Grahn, H. Maris, and J. Tauc, 'Surface generation and detection of phonons by picosecond light pulses,' Phys. Rev. B, 34, 4129 (1986). [2.9] A. Bartels, T. Dekorsy, H. Kurz, and K. Kohler, 'Coherent zone-folded longitudinal acoustic phonons in semiconductor superlattices: Excitation and detection,' Phys. Rev. Lett., 82, 1044 (1999). [2.10] R. Stearns and G. Kino, 'Effect of electronic strain on photoacoustic generation in silicon,' Appl. Phys. Lett., 47, 1048 (1985). [2.11] P. Yu, J. Tang, and S. H. Lin, 'Photoinduced structural dynamics in laser-heated nanomaterials of various shapes and sizes,' The Journal of Physical Chemistry C, 113, 7480 (2009). [2.12] M. Perner, S. Gresillon, J. Marz, G. Von Plessen, J. Feldmann, J. Porstendorfer, K. Berg, and G. Berg, 'Observation of hot-electron pressure in the vibration dynamics of metal nanoparticles,' Phys. Rev. Lett., 85, 792 (2000). [2.13] G. V. Hartland, 'Measurements of the material properties of metal nanoparticles by time-resolved spectroscopy,' Phys. Chem. Chem. Phys., 6, 5263 (2004). [2.14] S. Valette, R. L. Harzic, N. Huot, E. Audouard, and R. Fortunier, '2d calculations of the thermal effects due to femtosecond laser-metal interaction,' Appl. Surf. Sci., 247, 238 (2005). [2.15] O. B. Wright, B. Perrin, O. Matsuda, and V. E. Gusev, 'Ultrafast carrier diffusion in gallium arsenide probed with picosecond acoustic pulses,' Phys. Rev. B, 64, 81202, (2001). [2.16] O. B. Wright and V. E. Gusev, 'Acoustic generation in crystalline silicon with femtosecond optical pulses,' Appl. Phys. Lett., 66, 1190, (1995). [2.17] Y. Rosenwaks, M. C. Hanna, D. H. Levi, D. M. Szmyd, R. K. Ahrenkiel, and A. J. Nozik, 'Hot-carrier cooling in GaAs: Quantum wells versus bulk,' Phys. Rev. B, 48, .14675, (1993). [2.18] http://www.ioffe.rssi.ru/SVA/NSM/Semicond/GaAs/electric.html#Recombination. [2.19] E. Dieulesaint and D. Royer, Elastic waves in solids. Springer, (1995). [2.20] A. E. Love, A treatise on the mathematical theory of elasticity. Dover, (1944). [2.21] S. M. Sze, Semiconductor sensors. Wiley New York, (1994). [2.22] M. Hu, X. Wang, G. Hartland, P. Mulvaney, J. Juste, and J. Saders, “Vibrational response of nanorods to ultrafast laser induced heating: Theoretical and experimental analysis,” J. Am. Chem. Soc, 125, 14925 (2003). [2.23] V. Klimov, Semiconductor and metal nanocrystals: Synthesis and electronic and optical properties. CRC, (2004). [2.24] O. B. Wright, 'Thickness and sound velocity measurement in thin transparent films with laser picosecond acoustics,' J. Appl. Phys., 71, 1617, (1992). [3.1] C. Thomsen, H. Grahn, H. Maris, and J. Tauc, 'Surface generation and detection of phonons by picosecond light pulses,' Phys. Rev. B, 34, 4129 (1986). [3.2] E. D. Palik and G. Ghosh, Handbook of optical constants of solids. Academic press, (1985). [3.3] D. T. F. Marple, 'Refractive index of GaAs,' J. Appl. Phys., 35, 1241, (1964). [3.4] E. Dieulesaint and D. Royer, Elastic waves in solids. Springer, (1995). [3.5] D. E. Aspnes, 'Optical properties of thin films,' Thin Solid Films, 89, 249, (1982). [3.6] H. Y. Chen, H. W. Lin, C. Y. Wu, W. C. Chen, J. S. Chen, and S. Gwo, 'Gallium nitride nanorod arrays as low-refractive-index transparent media in the entire visible spectral region,' Opt. Express, 16, 8106, (2008). [3.7] S. Zollner, 'Optical constants and critical-point parameters of GaAs from 0.73 to 6.60 eV,' J. Appl. Phys., 90, 515, (2001). [3.8] Private communication with Jia-Hong Sun. [4.1] H. N. Lin, R. J. Stoner, H. J. Maris, and J. Tauc, 'Phonon attenuation and velocity measurements in transparent materials by picosecond acoustic interferometry,' J. Appl. Phys., 69, 3816, (1991). [4.2] O. B. Wright, 'Thickness and sound velocity measurement in thin transparent films with laser picosecond acoustics,' J. Appl. Phys., 71, 1617, (1992). [4.3] H. T. Grahn, D. A. Young, H. J. Maris, J. Tauc, J. M. Hong, and T. P. Smith III, 'Sound velocity and index of refraction of alas measured by picosecond ultrasonics,' Appl. Phys. Lett., 53, 2023, (1988). [4.4] P. Yu, J. Tang, and S. H. Lin, 'Photoinduced structural dynamics in laser-heated nanomaterials of various shapes and sizes,' The Journal of Physical Chemistry C, 113, 7480 (2009). [4.5] C. Thomsen, H. Grahn, H. Maris, and J. Tauc, 'Surface generation and detection of phonons by picosecond light pulses,' Phys. Rev. B, 34, 4129 (1986). [4.6] L. Schulz, 'The optical constants of silver, gold, copper, and aluminum. I. The absorption coefficient k,' JOSA, 44, 357 (1954). | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/46451 | - |
dc.description.abstract | 我們利用超快雷射暫態反射量測技術在整齊排列的砷化鎵奈米圓柱二維陣列中激發縱向同調聲學聲子並研究其行為。由於奈米柱的邊界效應,產生的音波會被侷限在奈米柱裡,並且音波的傳播行為會受到改變,我們稱此為波導模態。當兩個沿著奈米柱往相反方向傳播的波導模態重疊時,即會產生駐波,我們稱此為振動模態。當奈米柱的長度遠大於其寬度時,其振動模態可以被分類為兩類:軸向延伸模態(extensional mode)和徑向延伸模態(breathing mode)。我們成功地在實驗上觀察到砷化鎵奈米柱的基諧軸向延伸模態以及基諧徑向延伸模態。根據一個簡化的等向性圓柱體模型,我們計算出此兩類振動振動模態之特徵頻率的解析解,並將實驗結果與有限元素分析法模擬結果做比較,我們發現理論計算與模擬結果大致上與實驗結果吻合。另一方面,我們也對實驗觀察到的振動模態的相位進行分析。
為了要觀察砷化鎵奈米柱的波導模態,我們對另一個在砷化鎵奈米柱頂端鍍了十五奈米厚金膜的樣品進行了量測。藉由吸收雷射光的能量,金膜會因為熱膨脹而對奈米柱施以應力,進而產生沿著奈米柱傳播的音波,此音波會將其能量耦合到波導模態,故我們將有機會藉由背向布里淵散射(backward Brillouin scattering)機制觀察到砷化鎵奈米柱中波導模態的傳播行為。根據此實驗,我們可在觀察到兩個頻率為6 ± 1 GHz 和 12.1 ± 1 GHz的額外振盪。為了在定量上解釋此現象,我們計算了波導膜態的色散關係,並且探討了一個用來偵測音波傳播行為的機制,背向布里淵散射。在此論文中,藉由與有限元素法所模擬出來的振動模態場型做比較,我們推測頻率為6 GHz的振盪是來自金膜內由雷射產生的熱應力所耦合到的奈米柱振動模態。而根據計算出來的波導色散關係,我們推測頻率為12.1 ± 1 GHz的振盪是來自於基頻波導模態所造成的背向布里淵散射,而其光學折射率,符合等效介質理論。 | zh_TW |
dc.description.abstract | Longitudinal Coherent Acoustic Phonons (CAPs) in 2D ordered cylindrical GaAs nanorods were excited and investigated by the ultrafast two-color transient reflection measurement. The generated CAPs are guided along the axis of the cylindrical rod in a small region. The boundary conditions at the interfaces can affect the behaviors of the CAPs. Such CAPs are called guided CAPs. The vibrational modes are formed by the superposition of two guided modes traveling along the cylindrical rod in opposite directions. The longitudinal vibrational modes of a cylindrical rod with a high aspect ratio (aspect ratio > 2.5) can be classified into two kinds of modes: the extensional modes and the breathing modes. Both the fundamental extensional mode and the fundamental breathing mode are observed experimentally in the GaAs nanorod. The characteristic frequencies of both kinds of modes are analytically calculated under the assumption that the rod is isotropic. The phases of the vibrational modes are also studied, which is related to the generation and detection mechanisms of the CAPs.
In order to study the guided modes in the GaAs nanorods, we performed experiments on another sample with a 15 nm-thickness gold film on top of rods. By absorbing the energy of the pump laser beam, the gold film would launch CAPs which propagate along the axis of the rod and couple to the propagating guided modes of the nanorod. The propagating guided modes can then be detected through the backward Brillouin scattering. Two additional oscillations whose frequencies at 6 ± 1 GHz and 12.1 ± 1 GHz are observed experimentally. To explain this phenomenon qualitatively, the dispersion relation of the guided modes is calculated, and a mechanism used to detect the propagating acoustic waves, the so-called backward Brillouin scattering, is also discussed. In this thesis, according to the mode patterns simulated by the finite element method (FEM), we infer that the 6 ± 1 GHz oscillation is due to the vibrational mode of the nanorod coupled by the laser-induced thermal stress in the disk-like gold films, and the 12.1 ± 1 GHz oscillation is due to the backward Brillouin scattering caused by the fundamental guided mode according to the calculated waveguide dispersion relation. | en |
dc.description.provenance | Made available in DSpace on 2021-06-15T05:09:43Z (GMT). No. of bitstreams: 1 ntu-99-R97941015-1.pdf: 2234427 bytes, checksum: 4240ea067c1857dc4d7394665589034a (MD5) Previous issue date: 2010 | en |
dc.description.tableofcontents | CONTENTS
致謝 i 中文摘要 iii Abstract v Contents ix List of Figures xiii List of Tables xix Chapter 1 Introduction 1 1.1 Confined Coherent Acoustic Phonons in Nanoparticles 1 1.2 Femtosecond Pump-Probe Technique 2 1.3 Motivation 4 1.4 Thesis Structure 6 Reference 9 Chapter 2 Coherent Acoustic Phonons (CAPs) in a Cylindrical Rod 13 2.1 Sub-terahertz Coherent Acoustic Phonons 13 2.2 Generation Mechanisms of CAPs 14 2.2.1 CAPs in Metals 14 2.2.2 CAPs in Semiconductors 17 2.3 Guided Modes of a Cylindrical Rod 18 2.4 Vibrational Modes of a Cylindrical Rod 23 2.5 Detection Mechanisms of CAPs 30 2.5.1 Modulation of the Optical Properties by CAPs 30 2.5.2 Backward Brilluoin Scattering 31 Reference 36 Chapter 3 Acoustic Vibrational Modes of Pure GaAs Nanorods 40 3.1 Sample Preparation and Experimental Setup 40 3.2 Generation of CAPs in the GaAs Nanorods 46 3.3 Experimental Results and Discussions 47 3.3.1 Frequencies of the Vibrations 47 3.3.2 Phases of the Vibrations 57 Reference 61 Chapter 4 Acoustic Oscillations of Gold-Filmed GaAs Nanorods 62 4.1 Using Metal Films as the Opto-Acoustic Transducers 62 4.2 Experimental Results and Discussions 64 4.2.1 Frequencies of the Vibrations 64 4.2.2 Phases of the Vibrations 72 Reference 81 Chapter 5 Summary 82 | |
dc.language.iso | en | |
dc.title | 砷化鎵奈米柱之同調聲學聲子行為 | zh_TW |
dc.title | Coherent Opto-Acoustic Behaviors of GaAs Nanorods | en |
dc.type | Thesis | |
dc.date.schoolyear | 98-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 張玉明(Yu-Ming Chang),施閔雄(Min-Hsiung Shih) | |
dc.subject.keyword | 同調聲學聲子,飛秒雷射,奈米柱,波導模態,振動模態,奈米超音波波導, | zh_TW |
dc.subject.keyword | Coherent Acoustic Phonons,Femtosecond Laser,Nanorod,Propagating Guided Modes,Vibrational Modes,Nano-Ultrasonic Waveguide, | en |
dc.relation.page | 84 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2010-07-26 | |
dc.contributor.author-college | 電機資訊學院 | zh_TW |
dc.contributor.author-dept | 光電工程學研究所 | zh_TW |
顯示於系所單位: | 光電工程學研究所 |
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