The Hyperfine Structures of Rubidium Atom Using Electromagnetically Induced Transparency

Abstract

In this work we study the hyperfine structure of 87Rb in D-states by using Electromagnetically Induced Transparency (EIT) EIT is an atomic destructive phenomenon which is given by the interaction between a laser and an atom In EIT a weak probe light field in resonance with an atomic transition propagates through a medium with reduced absorption due to interaction with a strong coupling light field EIT has studied in three energy levels included: ladder Λ V configurations In our experiment we study the ladder type EIT of Rubidium atoms The probe beam is strongly absorption with the |1> → |2> transition with the Rabi frequency Ωp The coupling beam with the Rabi frequency Ωc is in the |2> → |3> transition The decay rate of state |2> and |3> are given by Γ2 and Γ3 respectively The EIT appears when the weak probe laser beam at 780 2 nm (5S1/2 → 5P3/2) and the strong coupling laser beam at 572 62 nm 572 57 nm or 776 nm (5P3/2 → 7D3/2 7D5/2 or 5P3/2 → 5D5/2) To improve the EIT to noise ratio the laser frequency will be stabilized to a rubidium hyperfine transition to narrow the laser line-width while the coupling laser scanned cross over the transition of excited states

Date of Award	2014 Jul 30
Original language	English
Supervisor	Chin-Chun Tsai (Supervisor)