Low cost photonic comb for sub-m/s wavelength calibration

Low cost photonic comb for sub-m/s wavelength calibration
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用于亚米/秒波长校准的低成本光子梳

DOI:
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发表时间:
2016
期刊:
Astronomical Telescopes + Instrumentation
影响因子:
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通讯作者:
S. Leon
S. Leon
中科院分区:
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文献类型:
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作者:
C. Betters;M. Hermouet;Thomas Blanc;J. Colless;J. Bland;J. Kos;S. Leon

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精确的径向速度测量的一个基本限制是校准源的准确性和稳定性。在这里,我们提出了一种使用单模光纤法布里-珀罗标准具的基于更复杂的激光计量系统的低成本替代方案。该光子梳上有三个关键元件:i)带有热电制冷器的光纤标准具;ii)Rb饱和吸收光谱(SAS)装置;以及iii)用于同时锁定标准具的光纤开关系统。我们同时测量了RuD2在780.2 nm附近的跃迁和最接近的标准具线。在连续运行的10分钟积分时间间隔内,PID回路控制标准具温度以保持其峰值的位置,其均方根误差为<10 cm/S。光纤交换系统允许标准具与光谱仪和SAS系统的时分多路耦合。
A fundamental limitation of precision radial velocity measurements is the accuracy and stability of the calibration source. Here we present a low-cost alternative to more complex laser metrology based systems that utilises a single-mode fibre Fabry-Perot etalon. There are three key elements on this photonic comb: i) an optical fibre etalon with thermo-electric coolers; ii) a Rubidium Saturation Absorption Spectroscopy (SAS) setup; and iii) an optical fibre switch system for simultaneous laser locking of the etalon. We simultaneously measure the Rubidium D2 transitions around 780.2 nm and the closest etalon line. A PID loop controls the etalon temperate to maintain the position of its peak with an RMS error of <10cm/s for 10 minute integration intervals in continous operation. The optical fibre switch system allows for a time multiplexed coupling of the etalon to a spectrograph and SAS system.
DOI: 10.1051/0004-6361/201424099
发表时间: 2014-08
影响因子: 6.5
作者:
A. Reiners;R. Banyal;R. Ulbrich
通讯作者: A. Reiners;R. Banyal;R. Ulbrich