Doppler free spectroscopy of Rubidium and vapor cell interferometer

Abstract

Doppler-free saturation spectroscopy is a technique used for the precise determi- nation of Hyperfine spectrum of atoms without Doppler broadening. Throughout this work measured the Doppler-free hyperfine spectrum of two isotopes( 85 Rb and 87 Rb) of Rubidium atom and observed the power broadening of spectra.Then we incopo- rated a Mach-Zehnder interferometer in this spectroscopy setup to measure the pump light induced phase shift in the Rubidium vapor cell.