We demonstrate a method to extend the range of pulsed laser spin noise measurements to long spin lifetimes. We use an analog time-domain detection scheme with a bandwidth limited only by laser pulse duration. Our model uses statistics and Bloch-Torrey equations to extract the Lande g-factor, Faraday cross-section σF, and spin lifetime τS, while accounting for finite detector response. Varying the magnetic field with a fixed probe-probe delay yields τS when it is longer than the laser repetition period. Varying the probe-probe delay with a fixed field produces a time-domain measurement of the correlation function.
@article{arxiv.1508.07383,
title = {Resonant and Time-Resolved Spin Noise Spectroscopy},
author = {Brennan C. Pursley and Xinlin Song and Vanessa Sih},
journal= {arXiv preprint arXiv:1508.07383},
year = {2018}
}