博碩士論文 102222009 詳細資訊




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姓名 廖文聖(Wen-Sheng Liao)  查詢紙本館藏   畢業系所 物理學系
論文名稱 銫原子 6S-6D 雙光子超精細耦合常數
(Cesium 6S-6D two-photon transitions and hyperfine coupling constants)
相關論文
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★ 銫原子6S1/2-6D3/2超精細躍遷絕對頻率與超精細結構★ 銫原子蘭道g值之量測
★ 無頻率調制銣原子光鐘之研究★ Direct comb laser spectroscopy of Cs 6S-8S, Rb 5S-5D hyperfine transitions—toward building up a novel Ti:sapphire comb laser with merely 6cm Cs-Rb mixed cell
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摘要(中) 我們建立了一套 885 nm 穩頻雷射系統,透過電光調製器光纖,將雷射鎖在銫原子6S1/2 F=3到6D3/2 F=5的交叉譜線上,掃描銫原子6S1/2 F=4 到6D3/2 F=2,3,4,5的躍遷;同樣地,我們將雷射鎖在銫原子6S1/2 F=4 到6D3/2 F=3的交叉譜線上,掃描銫原子6S1/2 F=3到6D3/2 F=2,3,4,5的躍遷,藉此便可得到銫原子6D 3/2的超精細結構。此次我們所量得的 6S 1/2 F=3 到6D 3/2 F=2,3,4,5的躍遷間距分別為,81.767(29) MHz、65.315(19) MHz、49.148(23) MHz,其超精細耦合常數 A 與 B 分別為 16.346(2)、0.058(17);S 1/2 F=4 到6D3/2 F=2,3,4,5的躍遷間距分別為, 81.763(17) MHz、65.320(19) MHz、49.149(3) MHz,其超精細耦合常數 A 與 B 分別為 16.331(3)、0.067(16)。 建立 885 nm 穩頻雷射的另一個目的是為了作為光梳雷射的參考頻率,透過我們實驗室的 822 nm 穩頻雷射,與此次我們所建立的885 nm 穩頻雷射,便可回授控制鈦藍寶石雷射的腔長,鎖住脈衝重覆率,以及回授控制AOM,鎖住鈦藍寶石雷射的偏移頻率,便可得到一穩定之光梳雷射。將頻率鎖在銫原子6S-8S躍遷(822 nm)與6S-6D躍遷(885 nm)的光梳頻雷射,其短期頻率穩定度優於以銫原子鐘做為參考的自參考光梳雷射。
摘要(英) We constructed an 885 nm frequency stabilized diode laser system. We locked the 885 nm laser to Cs atom 6S1/2 F=3 to 6D 3/2 F=5 transition and scanned the frequency of carrier of the diode laser to obtain the hyperfine structure of 6D3/2. Similarly, we locked the 885 nm laser frequency to Cs atom 6S 1/2 F=4 to 6D3/2 F=3 transition and scanned the frequency of carrier of the diode laser to obtain hyperfine structure of
6D3/2. In the end, we deduced that the hyperfine coupling constant via the measuring of 6D3/2 hyperfine interval.
In this work, for the hyperfine interval of 6S1/2 F=3 to 6D 3/2 F=2 to 5 that we measured were 81.767(29) MHz, 65.315(19) MHz and 49.148(23) MHz. The hyperfine coupling constants A and B that we deduced were 16.346(2) and 0.058(17). Similarly, the hyperfine interval of 6S1/2 F=4 to 6D3/2 F=2 to 5 that we measured were 81.763(17) MHz, 65.320(19) MHz and 49.149(3) MHz. The hyperfine coupling constants A and B that we deduced were 16.331(3) and 0.067(16) Other purposes of this work are to provide a frequency reference for Ti-Sapphire laser. In the past, our lab made a self-reference comb laser by referring to a Cs clock. In this work, we constructed a stabler frequency
comb laser by directly referring the mode-locked laser to a cesium atom two-photon transition at 822 nm and 885 nm.
關鍵字(中) ★ 銫原子
★ 超精細耦合常數
關鍵字(英) ★ cesium
★ hyperfine coupling constants
論文目次 目錄
摘要……………………………………………………………………………………………………………………………………………………i
Abstract………………………………………………………………………………………………………………………………ii
圖目錄………………………………………………………………………………………………v
表目錄…………………………………………………………………………………………ix
第一章 研究動機與歷史背景…………………………………………1
1.1 研究動機…………………………………………………………1
1.2 銫原子 6S-6D 躍遷之相關量測…………………………………2
第二章 基本理論………………………………………………………10
2.1 銫原子超精細結構……………………………………………10
2.2 Doppler-free 雙光子躍遷……………………………………12
2.3 譜線增寬………………………………………………………14
2.4 Hansch scheme 鎖頻…………………………………………16
2.5 光梳頻雷射……………………………………………………19
第三章 實驗架設………………………………………………………21
3.1 885nm 掃頻與穩頻光路………………………………………21
3.2 穩頻系統………………………………………………………24
3.3 掃頻系統………………………………………………………27
3.4 銫原子溫控系統…………………………………………………………………………28
3.5 光梳雷射………………………………………………………30
第四章 實驗結果與討論………………………………………………35
4.1 Hansch scheme 鎖頻與微分訊號……………………………35
4.2 掃頻譜線參數設定與曲線套適………………………………43
4.3 6S-6D 躍遷頻率之量測………………………………………51
4.4 銫原子 6D 3/2 超精細耦合常數………………………………63
4.5 結論與未來展望……………………………………………66
參考文獻………………………………………………………………67
參考文獻 [1] Tomoaki Ohtsuka, Nobuo Nishimiya, Takako Fukuda and Masao Suzuki, "Doppler-Free Two-Photon Spectroscopy of 6S 1/2 -6D 3/2, 5/2 Transition in Cesium", J. Phys. Soc. Jpn., Vol. 74, No. 9 (2005)
[2] Vladislav Gerginov, Andrei Derevianko, and Carol E.Tanner, "Observation of the Nuclear Magnetic Octupole Moment of 133 Cs", Phys. Rev. Lett, Vol. 91, No. 7 (2003)
[3] A. Kortyna, N. A. Masluk and T. Bragdon, "Measurement of the 6d 2 D J hypefine structure of cesium using resonant two-photon sub-Doppler spectroscopy", Phys. Rev. A, Vol. 74 (2006)
[4] C. Tai, W. Happer, and R. Gupta, "Hyperfine structure and lifetime measurements of the second-excited D states of rubidium and cesium by cascade fluorescence spectroscopy", Phys. Rev. A, Vol. 12, No. 3 (1975)
[5] B. Cagnac, "Twenty Years of Doppler-Free Two-Photon Spectroscopy", Laser Physics, Vol. 4, No. 2 (1993)
[6]Simon Hooker, Colin Webb, "Laser Physics"
[7] T.W. Hansch and B. Couillaud, "Laser Frequency Stabilization by Polarization Spectroscopy of a Reflecting Reference Cavity", Opt. Commun, Vol. 35, No. 3 (1980)
[8] Jun Ye, Steven T. Cundiff, "Femtosecond Optical Frequency Comb: Principle, Operation, and Applications"
[9] David J. Jones, Scott A. Diddams, Jinendra K. Ranka, Andrew Stentz, Robert S. Windeler, John L. Hall, Steven T. Cundiff, "Carrier-Envelope Phase Control of Femtosecond Mode-Locked Lasers and Direct Optical Frequency Synthesis", Science, Vol. 288 (2000)
[10] Chien-Ming Wu , "Optical frequency comb laser system and Cesium 6S-8S two-photon transition spectroscopy" (2013)
[11] Corney, Alan, "Atomic and laser spectroscopy"
[12] C. S. Wood, S. C. Bennett, D. Cho, B. P. Masterson, J. L. Roberts, C. E. Tanner, C. E. Wieman, "Measurement of Parity Nonconservation and an Anapole Moment in Cesium", Science, Vol. 275 (1997)
指導教授 鄭王曜(Wang-Yau Cheng) 審核日期 2015-7-27
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