We report on spectra obtained by measuring the laser intensity noise after a broad-bandwidth diode-laser beam passes through a rubidium vapor cell. The atomic resonance converts laser frequency fluctuations into intensity fluctuations. We compare our experimental spectra with numerically calculated spectra based on a phase-diffusion model of the laser field and find good agreement.
© 1993 Optical Society of America
D. H. McIntyre, C. E. Fairchild, J. Cooper, and R. Walser, "Diode-laser noise spectroscopy of rubidium," Opt. Lett. 18, 1816-1818 (1993)