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姓名 陳亭儒(CHEN, TING-JU) 查詢紙本館藏 畢業系所 物理學系 論文名稱 銫原子6S1/2-6D3/2超精細躍遷絕對頻率與超精細結構
(Cesium 6S1/2-6D3/2 hyperfine transitions : absolute frequency and hyperfine structure)相關論文 檔案 [Endnote RIS 格式]
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摘要(中) 我們建立了一套885 nm穩頻雷射系統,藉由電光調製器將一外腔式半導體雷射頻率鎖在銫原子6S1/2-6D3/2的交叉譜線躍遷上,穩定度在200秒平均時間為10-12 (受限於銫原子鐘的穩定度)。我們使用偏頻鎖頻技術控制另外一台外腔式半導體雷射,透過Doppler free雙光子躍遷光譜測量銫原子6S1/2-6D3/2的躍遷頻率。經過對light shift以及磁場的修正,推得超精細常數為A=16.3351(8) MHz B=-0.092(9) MHz C=0.0029(4) MHz。除此之外,考慮了殘餘氣體對銫原子能階可能的影響,我們在真空系統中量測銫原子6S1/2-6D3/2¬躍遷的絕對頻率,其值分別為6S1/2 F=4 - 6D3/2 F=5: 338 595 897 162 (51) kHz 以及6S1/2 F=3 - 6D3/2 F=5: 338 600 493 491 (15) kHz 摘要(英) We developed an 885-nm frequency stabilized laser system locked via Cesium 6S1/2-6D3/2 crossover-line transition with electro-optical modulator. The stability of laser frequency is 10-12 at 200-seconds average time. We offset locked a slave laser to probe the hyperfine structure of Cesium 6D3/2 via the Doppler free two-photon transition spectra. After extrapolating the light shift and the Zeeman shift, the Cesium 6D3/2 coupling constants A and B and C are determined as A=16.3351(8) MHz; B=-0.092(9) MHz; C=0.0029(4) MHz, which is the first time to our knowledge pushing the spectral resolution to C constant in this transition.
Besides, to avoid any collision shift by alien gas, we performed the absolute frequency measurement of 6S1/26D3/2 transition with a cesium cell whose vacuum was always kept at 10-10 by an ion pump. We obtained the value of 338 595 897 162 (51) kHz for 6S1/2 F=4 - 6D3/2 F=5 and 338 600 493 491 (15) kHz for 6S1/2 F=3 - 6D3/2 F=5 respectively.關鍵字(中) ★ 銫原子
★ 6S-6D
★ 超精細結構
★ 雙光子躍遷關鍵字(英) ★ Cesium
★ 6S-6D
★ hyperfine structure
★ two-photon transition論文目次
目錄
摘要.............................................Ⅰ
目錄............................................Ⅱ
圖目錄......................................... Ⅳ
表目錄..........................................Ⅵ
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的相關實驗.....................2
第二章 基本理論.................................5
2.1 超精細結構...............................5
2.2 銫原子6S-6D雙光子躍遷.....................7
2.3 雙光子躍遷...............................8
2.4 Doppler-free 雙光子光譜..................9
2.5 Zeeman effect...........................12
第三章 實驗架設.................................15
3.1 穩頻雷射系統.............................16
3.2 掃頻雷射系統.............................20
3.3 偏頻鎖相.................................21
第四章 實驗結果.................................24
4.1 雷射穩頻與偏頻鎖相穩定度探討...............24
4.2 6S-6D超精細結構之量測及誤差討論...........30
4.3 銫原子6D3/2超精細耦合常數.................40
4.4 絕對頻率量測之量測........................41
4.5 結論.....................................44
參考文獻.........................................45
附錄.............................................46
附錄一 免除螢光干擾後的頻率偏移測量...............................................46
附錄二 頻率偏移的測量.............................48參考文獻
[1] Vladislav Gerginov, Andrei Derevianko, and Carol E. Tanner,“Observation of the Nuclear Magnetic Octupole Moment of 133Cs” J. Phys. Soc. Jpn., Vol. 74, No. 9(2005)
[2] 吳建明”光梳雷射系統與銫原子6S-8S雙光子躍遷光譜”清華大學光電工程研究所博士論文
[3] Y. Y. Chen, T. W. Liu, C. M. Wu, C. C. Lee, C. K. Lee and W. Y. Cheng, "High-resolution 133Cs 6S-6D, 6S-8S two-photon spectroscopy using an intracavity scheme", Opt. Lett. 36, 76 (2011).
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[6] Tomoaki Ohtsuka, Nobuo Nishimiya, Takako Fukudaand Masao Suzuki, "Doppler-Free Two-PhotonSpectroscopy of 6S1/2-6D3/2, 5/2Transition in Cesium", J. Phys. Soc. Jpn., Vol. 74, No. 9(2005)
[7] A. Kortyna, N. A. Masluk and T. Bragdon,"Measurement of the 6d2DJ hypefine structure of cesium using resonant two-photon sub-Doppler spectroscopy", Phys. Rev. A, Vol. 74(2006)
[8] 廖文聖,”銫原子6S-6D雙光子超精細耦合常數” 中央大學物理系碩士論文(2015)
[9] 林佳瑋”同調性毫赫茲以下的光學偏頻鎖相系統測量高分辨率的銫原子6S-6D超精細躍遷” 中央大學物理所碩士論文(2015)
[10] Vladislav Gerginov, Andrei Derevianko, and Carol E. Tanner, "Observation of the Nuclear Magnetic Octupole Moment of 133Cs", Phys. Rev. Lett, Vol.91, No.7(2003)
[11] G. Grynberg, "Doppler-free multi-photon excitation : light shift and saturation", J. Phys. France 40, 657-664 (1979).
[12] G GRYNBERG and B CACNAC ”Doppler-free multiphotonic spectroscopy”
[13] D. A. Steck , "Cesium D Line Data", http://steck.us/alkalidata/ (2002).
[14] 曾楊富105年科技部結案報告指導教授 鄭王曜(Cheng, Wang-Yau) 審核日期 2017-7-21 推文 plurk
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