2010/09/22 by Romain Lauro, R. Lauro, T. Chanelière +3
Physics and Astronomy · #Atomic and Subatomic Physics Research #Photorefractive and Nonlinear Optics #Quantum optics and atomic interactions #quant-ph
paper · pdf · doi:10.1103/physrevb.83.035124
published as Phys. Rev. B 83, 035124 (2011)
arxiv created 2010/09/22 · openalex publication_date 2011/01/24 · arxiv updated 2011/06/14 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We show that the optical absorbance detection of nuclear spin echo gives direct access to the spin concentration, unlike most coherent signal detection techniques where the signal intensity/amplitude is difficult to connect experimentally with the spin concentration. This way we measure the spin-refocusing efficiency in a crystal of Tm3+:YAG. Given the large inhomogeneous broadening of the spin transition in this material, rephasing the spins with the usual hard pulse procedure would require excessively high radiofrequency power. Instead we resort to an adiabatic pulse sequence that perfectly returns the spins to their initial common orientation, at low power cost.