Absolute absorption on the potassium D lines:theory and experiment

Abstract

We present a detailed study of the absolute Doppler-broadened absorption of a probe beam scanned across the potassium D lines in a thermal vapour. Spectra using a weak probe were measured on the 4S $\to$ 4P transition and compared to the theoretical model of the electric susceptibility detailed by Zentile et al. (2015) in the code named ElecSus. Comparisons were also made on the 4S $\to$ 5P transition with an adapted version of ElecSus. This is the first experimental test of ElecSus on an atom with a ground state hyperfine splitting smaller than that of the Doppler width. An excellent agreement was found between ElecSus and experimental measurements at a variety of temperatures with rms errors of $\sim 10^{-3}$. We have also demonstrated the use of ElecSus as an atomic vapour thermometry tool, and present a possible new measurement technique of transition decay rates which we predict to have a precision $\sim$ 3 kHz.

References in corpus (11)

• Many-Body Physics with Ultracold Gases
• Experimental demonstration of quantum memory for light
• Absolute absorption on the rubidium D lines: comparison between theory and experiment
• ElecSus: A program to calculate the electric susceptibility of an atomic ensemble
• Wide-bandwidth, tunable, multiple-pulse-width optical delays using slow light in cesium vapor
• An optical isolator using an atomic vapor in the hyperfine Paschen-Back regime
• Atomic Faraday filter with equivalent noise bandwidth less than 1 GHz
• Simultaneous sub-Doppler laser cooling of fermionic ${}^6$Li and ${}^{40}$K on the D${}_1$ line: Theory and Experiment
• Effect of line broadening on the performance of Faraday filters
• Polarization spectroscopy and magnetically-induced dichroism of the potassium D2 lines
• Revisiting Nuclear Quadrupole Moments in ${}^{39-41}$K Isotopes

Cited by in corpus (5)

• ElecSus: Extension to arbitrary geometry magneto-optics
• Collapse and revival of a Dicke-type coherent narrowing in potassium vapor confined in a nanometric-thin cell
• Coherent control of group index and magneto-optical anisotropy in a multilevel atomic vapor
• Hyperfine Paschen-Back regime of Potassium D${}_2$ line observed by Doppler-free spectroscopy
• Spectroscopic localization of atomic sample plane for precise digital holography