Absolute frequency measurement of molecular iodine hyperfine transitions at 647 nm

Huang Yao-Chin; Guan Yu-Chan; Suen Te-Hwei; Shy Jow-Tsong; Wang Li-Bang

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Absolute frequency measurement of molecular iodine hyperfine transitions at 647 nm

机译：在647nm处的分子碘杂种过渡的绝对频率测量

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We report absolute frequency measurements of molecular iodine P(46) 5-4 a(1), a(10), and a(15) hyperfine transitions at 647 nm with a fiber-based frequency comb. The light source is based on a Littrow-type external-cavity diode laser. A frequency stability of 5 x 10(-12) at a 200 s integration time is achieved when the light source is stabilized to the P(46) 5-4 a(15) line. The pressure shift is determined to be -8.3(7) kHz/Pa. Our determination of the line centers reached a precision of 21 kHz. The light source can serve as a reference laser for lithium spectroscopy (2S - 3P). (c) 2018 Optical Society of America

机译：在647nm下报告分子碘p（46），a（10）和a（15）的频率梳中的绝对频率测量。光源基于Littrow型外腔二极管激光器。当光源稳定到P（46）5-4的线路时，实现了在200秒的积分时间下的5×10（-12）的频率稳定性。压力移位确定为-8.3（7）kHz / PA。我们对该线中心的决定达到了21 kHz的精确度。光源可以用作锂谱的参考激光器（2S - ＆GT; 3P）。（c）2018年光学学会

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《Applied optics》 |2018年第9期|共5页
作者
Huang Yao-Chin; Guan Yu-Chan; Suen Te-Hwei; Shy Jow-Tsong; Wang Li-Bang;
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Natl Tsing Hua Univ Dept Phys Hsinchu 30013 Taiwan;

Natl Tsing Hua Univ Inst Photon Technol Hsinchu 30013 Taiwan;

Natl Tsing Hua Univ Dept Phys Hsinchu 30013 Taiwan;

Natl Tsing Hua Univ Dept Phys Hsinchu 30013 Taiwan;

Natl Tsing Hua Univ Dept Phys Hsinchu 30013 Taiwan;

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Absolute frequency measurement of molecular iodine hyperfine transitions at 647 nm

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