Simultaneous laser frequency stabilization to an optical cavity and an iodine frequency reference. Academic Article uri icon


  • In this Letter, we demonstrate a method to combine a molecular iodine absolute frequency reference with a high-finesse optical cavity in a single laser to take advantage of the frequency stability properties of both systems at different time scales. The result is a laser exhibiting the long-term and short-term stability levels of the iodine frequency reference and optical cavity, respectively. The method uses frequency offset side-band locking and an acousto-optical modulator driven ac-coupled servo-loop to correct the iodine's short-term frequency fluctuations. Experimental results show cavity-limited stability at 1 Hz of 10-151/Hz and iodine stability below 10 mHz of 10-131/Hz. In terms of the Allan deviation, this corresponds to stability levels close to the 10-15 at 1 s and 10-14 for observation times >100s.

published proceedings

  • Opt Lett

author list (cited authors)

  • Sanjuan, J., Abich, K., Blmel, L., Gohlke, M., Gualani, V., Oswald, M., ... Braxmaier, C.

citation count

  • 2

complete list of authors

  • Sanjuan, Jose||Abich, Klaus||Bl├╝mel, Ludwig||Gohlke, Martin||Gualani, Vivek||Oswald, Markus||Wegehaupt, Timm||Schuldt, Thilo||Braxmaier, Claus

publication date

  • January 2021