Frequency measurement of tellurium lines near calcium

Umakanth Dammalapati, Ken ichi Harada, Takeshi Inoue, Saki Ito, Hirokazu Kawamura, Kosuke Sakamoto, Kazuo Tanaka, Aiko Uchiyama, Risa Yoshioka, Yasuhiro Sakemi

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3 Citations (Scopus)


We report measurement of frequencies of tellurium lines with respect to atomic calcium employing a 423 nm commercial violet laser diode placed in an extended cavity. Doppler-free saturated absorption spectroscopy of molecular tellurium is performed on three lines, which are lower and higher in energy to the calcium 4s2 1S0–4s4p 1P1 transition. The measured frequency difference of 717(13) MHz between the strong absorption line, #1508 in the tellurium atlas and the calcium transition is in agreement within 10% of the values available from literature. Wavenumbers of two new tellurium lines are derived from the measurement. In addition, spectroscopy and laser cooling and trapping of francium (n = 7) on the ns 2S1=2–(n + 1)p 2P3=2 transition and spectroscopy of Te2 lines near francium could be performed employing the 423 nm diode laser.

Original languageEnglish
Article number124301
Journaljournal of the physical society of japan
Issue number12
Publication statusPublished - 2017 Dec 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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