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タイトル 原子のスペクトル測定に向けた位相敏感検波器の試作<数学・自然科学>
別タイトル
A Trial Product of Phase-Sensitive Detector towards the Measurements of Atomic Spectra
著者
傳田, 晟矢 (DENDA, Seiya)
埼玉大学教育学部理科教育講座 (Faculty of Education, Saitama University)
近藤, 一史 (KONDO, Hitoshi)
埼玉大学教育学部理科教育講座 (Faculty of Education, Saitama University)
大向, 隆三 (OHMUKAI, Ryuzo)
埼玉大学教育学部理科教育講座 (Faculty of Education, Saitama University)
[出版社版]
出版者 埼玉大学教育学部
日付
出版年: 2014 - 2014
作成日: 2014-10-28
更新日: 2014-12-16
上位タイトル
埼玉大学紀要. 教育学部 (Journal of Saitama University. Faculty of Education). Vol.63, No.2  (2014. ) ,p.205- 215
識別番号
ISSN
18815146
抄録 We report on the production of a phase-sensitive detector (PSD) to measure the atomic absorption spectra. The PSD was designed to consist of a multiple feedback filter circuit with a center frequency of 500 Hz, a multiplier circuit using an analog switching device and a phase-locked loop circuit to adjust the phase of the electric signal where a constant offset voltage is applied to the voltage controlled oscillator. To check our PSD's performance, we tried to measure the absorption spectrum of the rubidium D2 line (85Rb: 5S1/2 – 5P3/2) with it. The probe beam intensity was modulated at a frequency of 500 Hz by using an optical chopper, and it was detected by conventional saturation spectroscopy. As a result, we clearly obtained six absorption peaks that originated from the atomic and cross-over resonances as expected. The observed line widths of the peaks were almost 15.0 MHz, which is comparable to the natural line width restricted by the lifetime of the excited 5P3/2 state. Therefore, our PSD is applicable for signal detection in Doppler-free spectroscopy, modulation spectroscopy, and especially for the generation of derivative signals for locking the laser frequency to atomic resonance lines.
キーワード
位相敏感検波法
ルビジウム原子
吸収スペクトル
飽和効果
phase-sensitive detection
rubidium atom
absorption spectrum
saturation effect
言語
jpn
資源タイプ text
ジャンル Departmental Bulletin Paper
著者版フラグ publisher
Index
/ Public / 埼玉大学 / 教育学部
/ Public / ジャンル別 / 研究紀要 / 埼玉大学 / 教育学部紀要
/ Public / 主題別 / 工学 / 応用物理学・工学基礎 / 応用物理学一般
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