Based upon resonant two-photon absorption within a rubidium cell and 780 nm pump light, a birefringent medium for 1.530 μm is induced that changes rapidly with frequency. The birefringence is exploited to build a spectrometer that is capable of measuring the Doppler shift of scattered photons.
© 2012 Optical Society of America
Original Manuscript: March 5, 2012
Revised Manuscript: April 25, 2012
Manuscript Accepted: May 3, 2012
Published: June 18, 2012
J. D. Vance, "Two-photon absorption dispersion spectrometer for 1.53 μm eye-safe Doppler LIDAR," Opt. Lett. 37, 2457-2459 (2012)