Eur. Phys. J. D (2022) 76: 119
https://doi.org/10.1140/epjd/s10053-022-00444-0

Regular Article – Optical Phenomena and Photonics

Measurement of the temperature dependency of the linewidths and amplitudes of the sub-Doppler resonances of the ⁸⁷Rb D₂ line with π (π) polarized pump (probe) laser beams

TUBITAK National Metrology Institute (TUBITAK UME), P.K.54, 41470, Gebze, Kocaeli, Turkey

^a ersoy.sahin@tubitak.gov.tr

Received: 29 April 2022
Accepted: 23 June 2022
Published online: 8 July 2022

Abstract

The effect of the ambient temperature of the ⁸⁷Rb atoms on the linewidths and amplitudes of the F = 1 → F^/ = 0,1,2, F = 2 → F^/ = 1,2,3 and crossover resonances of the ⁸⁷Rb D₂ line were measured via π–π polarized pump (probe) laser beams with the saturation absorption spectroscopy. The measurements were performed with high precision and accuracy by using the heterodyne beat measurement technique. The linewidth and amplitude measurements have been done with an inaccuracy of fewer than 1.1 MHz and 0.3 mV, respectively.