Frequency Measurement of Molecular Iodine Hyperfine Transitions at 548.5 nm
碩士 === 國立清華大學 === 物理系 === 100 === The iodine stabilization system is usually used as an optical frequency standard. We report the absolute frequency measurement of 127I2 P(28) (24-0) lines. The frequency of iodine transitions is several GHz away from the Li+ ion transition and can be used as referen...
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ndltd-TW-100NTHU51980492015-10-13T21:23:06Z http://ndltd.ncl.edu.tw/handle/98302178798677346324 Frequency Measurement of Molecular Iodine Hyperfine Transitions at 548.5 nm 測量碘分子超精細譜線在548.5 nm躍遷頻率 蕭伃真 碩士 國立清華大學 物理系 100 The iodine stabilization system is usually used as an optical frequency standard. We report the absolute frequency measurement of 127I2 P(28) (24-0) lines. The frequency of iodine transitions is several GHz away from the Li+ ion transition and can be used as reference for lithium ion spectroscopy. In this experiment, we use 1097 nm external-cavity diode laser and a double system to produce 548.5 nm light, and use modulation transfer spectroscopy to obtain the iodine spectrum. We measure a1, a10, a15 lines, and they are measured at a vapor pressure of 7.8 Pa. As a result, we correct them by the pressure shift which is measured to be 8.9(1.2) kHz/Pa. The final results of the a1, a10, a15 are 546437908826(12) kHz, 546438483384(12) kHz, and 546438771985(12) kHz respectively. The results agree with the calculated values of IondineSpec5. The effect of pressure and power broadening are also investigated. For the future work, we will measure other transitions of molecular iodine between 540-550 nm, and some of them can also be used as references for lithium ion spectroscopy. 王立邦 2012 學位論文 ; thesis 52 zh-TW |
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碩士 === 國立清華大學 === 物理系 === 100 === The iodine stabilization system is usually used as an optical frequency standard. We report the absolute frequency measurement of 127I2 P(28) (24-0) lines. The frequency of iodine transitions is several GHz away from the Li+ ion transition and can be used as reference for lithium ion spectroscopy. In this experiment, we use 1097 nm external-cavity diode laser and a double system to produce 548.5 nm light, and use modulation transfer spectroscopy to obtain the iodine spectrum. We measure a1, a10, a15 lines, and they are measured at a vapor pressure of 7.8 Pa. As a result, we correct them by the pressure shift which is measured to be 8.9(1.2) kHz/Pa. The final results of the a1, a10, a15 are 546437908826(12) kHz, 546438483384(12) kHz, and 546438771985(12) kHz respectively. The results agree with the calculated values of IondineSpec5. The effect of pressure and power broadening are also investigated. For the future work, we will measure other transitions of molecular iodine between 540-550 nm, and some of them can also be used as references for lithium ion spectroscopy.
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author2 |
王立邦 |
author_facet |
王立邦 蕭伃真 |
author |
蕭伃真 |
spellingShingle |
蕭伃真 Frequency Measurement of Molecular Iodine Hyperfine Transitions at 548.5 nm |
author_sort |
蕭伃真 |
title |
Frequency Measurement of Molecular Iodine Hyperfine Transitions at 548.5 nm |
title_short |
Frequency Measurement of Molecular Iodine Hyperfine Transitions at 548.5 nm |
title_full |
Frequency Measurement of Molecular Iodine Hyperfine Transitions at 548.5 nm |
title_fullStr |
Frequency Measurement of Molecular Iodine Hyperfine Transitions at 548.5 nm |
title_full_unstemmed |
Frequency Measurement of Molecular Iodine Hyperfine Transitions at 548.5 nm |
title_sort |
frequency measurement of molecular iodine hyperfine transitions at 548.5 nm |
publishDate |
2012 |
url |
http://ndltd.ncl.edu.tw/handle/98302178798677346324 |
work_keys_str_mv |
AT xiāoyúzhēn frequencymeasurementofmoleculariodinehyperfinetransitionsat5485nm AT xiāoyúzhēn cèliàngdiǎnfēnzichāojīngxìpǔxiànzài5485nmyuèqiānpínlǜ |
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1718062574728118272 |