用于亚多普勒光谱和激光稳定的碘光子微电池的制备与表征
Fabrication and characterization of iodine photonic microcell for sub-Doppler spectroscopy and laser stabilization
AI总结：
本研究制备了全光纤充碘光子微电池，实现室温下73%吸收对比度及亚多普勒超精细结构分辨，用于激光稳定。
摘要：
我们报道了全光纤独立式充碘光子微电池的研制，该微电池在室温下展示了创纪录的吸收对比度。微电池的光纤由抑制耦合导光空芯光子晶体光纤制成。在10⁻¹至10⁻²毫巴的蒸气压下，使用一种基于金属真空部件且内表面涂覆陶瓷以耐腐蚀的新型气体歧管，将碘充入光纤纤芯。随后，光纤两端密封并安装在FC/APC连接器上，以便与标准光纤组件更好地集成。独立式微电池在633纳米波长范围内显示出对比度高达73%的多普勒谱线，插入损耗在3至4分贝之间。基于可饱和吸收的亚多普勒光谱学已被实施，以解析室温下P(33)6-3谱线的超精细结构，借助锁相放大，b4分量的半高全宽为24兆赫兹。此外，我们展示了室温下R(39)6-3谱线上可分辨的超精细分量，且无需借助信噪比放大技术。
英文摘要：
We report on the development of all-fiber stand-alone Iodine-filled Photonic Microcells demonstrating record absorption contrast at room temperature. The microcell s fiber is made of inhibited coupling guiding hollow-core photonic crystal fibers. The fiber-core loading with Iodine was undertaken at 10-1 - 10-2mbar vapor pressure using a novel gas-manifold based on metallic vacuum parts with ceramic coated inner surfaces for corrosion resistance. The fiber is then sealed on the tips and mounted on FC/APC connectors for better integration with standard fiber components. The stand-alone microcells display Doppler lines with contrasts up to 73% in the 633nm wavelength range, and an insertion loss between 3 to 4dB. Sub-Doppler spectroscopy based on saturable absorption has been carried out to resolve the hyperfine structure of the P(33)6-3 lines at room temperature with a full-width at half maximum of 24MHz on the b4 component with the help of lock-in amplification. Also, we demonstrate distinguishable hyperfine components on the R(39)6-3 line at room temperature without any recourse to signal-to-noise ratio amplification techniques.
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