Unobtrusive interferometer tracking by path length oscillation for multidimensional spectroscopy

Kevin F. Lee (1) , Adeline Bonvalet (1) , Patrick Nuernberger (1) , Manuel Joffre (1)

1 LOB - Laboratoire d'optique et biosciences

We track the path difference between interferometer arms with few-nanometer accuracy without adding optics to the beam path. We measure the interference of a helium-neon beam that copropagates through the interferometer with midinfrared pulses used for multidimensional spectroscopy. This can indicate motion, but not direction. By oscillating the path length of one arm with a mirror on a piezoelectric stack and monitoring the oscillations of the recombined helium-neon beam, the direction can be calculated, and the path delay can be continuously tracked. © 2009 Optical Society of America.

Domains: Optics [physics.optics]

Kevin F. Lee, Adeline Bonvalet, Patrick Nuernberger, Manuel Joffre. Unobtrusive interferometer tracking by path length oscillation for multidimensional spectroscopy. Optics Express, 2009, 17 (15), pp.12379-12384. ⟨10.1364/OE.17.012379⟩. ⟨hal-00817152⟩