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Sub-Doppler Molecular-Iodine Transitions Near the Dissociation Limit (523-498 NM)



W Y. Cheng, L Chen, T H. Yoon, John L. Hall, Jun Ye


A widely tunable and high-resolution spectrometer based on a frequency doubled Ti: sapphire laser is used to explore sub-Doppler transitions of iodine molecules in the wavelength range of 523-498 nm. The wavelength-dependence of the hyperfine transition linewidth of iodine is mapped out in this region and the narrowest linewidth is found to be -40 kHz near 508 nm. The hyperfine-resolved patterns are found to be largely modified towards the dissociation limit. The observed excellent signal-to-noise ratio should lead to high quality optical frequency standards that are better than the popular 532 nm system.
Optics Letters
No. 8


molecular iodine, molecular spectroscopy, sub-Doppler transitions


Cheng, W. , Chen, L. , Yoon, T. , Hall, J. and Ye, J. (2002), Sub-Doppler Molecular-Iodine Transitions Near the Dissociation Limit (523-498 NM), Optics Letters (Accessed November 28, 2023)
Created March 31, 2002, Updated October 12, 2021