Improved wavelength meter calibration in near infrared region via Doppler-free spectroscopy of molecular iodine
Improved wavelength meter calibration in near infrared region via Doppler-free spectroscopy of molecular iodine
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DOI：
10.1007/s00340-021-07650-5
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发表时间：
2021-06
期刊：
影响因子：
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通讯作者：
R. Powel;MaKenna Koble;Julian Palmes;N. Everett;P. Imgram;K. König;J. Lantis;K. Minamisono;W. Nörtershäuser;Ryan Parker;S. Pineda;F. Sommer;A. Klose
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文献类型：
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作者：
R. Powel;MaKenna Koble;Julian Palmes;N. Everett;P. Imgram;K. König;J. Lantis;K. Minamisono;W. Nörtershäuser;Ryan Parker;S. Pineda;F. Sommer;A. Klose
利用分子碘在700 nm附近的跃迁将激光波长计校准到±1 MHz 1，其中碘线的精确实验测量很少。采用两种饱和吸收光谱系统测量和表征了分子碘在700 nm附近的R（118）（2-8）a10，R（54）（3-9）a1和P（48）（3-9）a15超精细谱线。使用频率梳测量过渡频率，并用于校准波长计。此外，还得到了R（54）（3-9）跃迁的全超精细谱，并利用理论模型进行拟合，得到了与理论值相符的超精细耦合常数。
A laser wavelength meter was calibrated to ±1 MHz 1using transitions in molecular iodine at around 700 nm, where precise experimental measurements of iodine lines are sparse. Two saturation absorption spectroscopy systems were used to measure and characterize the R(118)(2-8) a10, R(54)(3-9) a1, and P(48)(3-9) a15hyperfine lines of molecular iodine near 700 nm. The transition frequencies were measured using a frequency comb and used to calibrate the wavelength meter. Additionally, the full hyperfine spectrum of the R(54)(3-9) transition was obtained and fitted using a theoretical model allowing for hyperfine coupling constants to be deduced, which agreed with theoretical values.