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Sub-Doppler molecular-iodine transitions near the dissociation limit (523-498 nm)

机译:亚多普勒分子碘跃迁接近解离极限(523-498 nm)

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摘要

A widely tunable and high-resolution spectrometer based on a frequency-doubled Ti:sapphire laser was used to explore sub-Doppler transitions of iodine molecules in the wavelength range 523-498 nm. The wavelength dependence of the hyperfine transition linewidth of iodine was mapped out in this region, and the narrowest linewidth was ~4 kHz near 508 nm. The hyperfine-resolved patterns were found to be largely modified toward the dissociation limit. The observed excellent signal-to-noise ratio should lead to high-quality optical frequency standards that are better than those of the popular 532-nm system.
机译:基于倍频Ti:蓝宝石激光器的可调谐高分辨率光谱仪用于研究波长范围为523-498 nm的碘分子的亚多普勒跃迁。碘的超精细跃迁线宽的波长相关性在该区域被绘制出来,最窄的线宽在508 nm附近为〜4 kHz。发现超细分辨的图案在解离极限上有很大的改变。观察到的极佳信噪比应可产生高质量的光学频率标准,该标准优于流行的532 nm系统的光学频率标准。

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