Title: Dataset for fast, low-loss all-optical phase modulation in warm rubidium vapour

License: Creative Commons Attribution 4.0 International

Abstract: This dataset includes data that describes phase modulation of light mediated by an all-optical, two-photon transition in warm rubidium vapour. The presence of a bright control field, detuned from an atomic resonance, induces a change in the atomic susceptibility. A weak signal field counter-propagates with the control field, and experiences phase modulation, which is dependent on the strength intensity of the control field. These data are collected from experiments in both a continuous wave and pulsed field configuration. We also include numerical simulations of the continuous wave experiments.

Subjects: atoms and ions

Optics, photonics and lasers: quantum optics and information

Data: Experimental and simulation data used to produce figures in "Fast, low-loss all-optical phase modulation in warm rubidium vapour."

Documentation


Data collection method:

This dataset consists of transmission measurements though a rubidium vapour cell and simulations thereof. A weak signal field counter-propagates through the cell with a strong control field, each detuned from transitions in the Rb atom. We include experimental and simulated transmission spectra for the continuous wave signal field with the control field modulated by an optical chopper. Transmitted signal light is analyzed by a time-binned interferometer, and phase shift is extracted. Similarly, experimental results for a pulsed signal field are observed, and analyzed by the same means.

Technical information:

The continuous wave laser used was a Moglabs Cat Eye diode laser, operating at 780 nm. The pulsed signal laser was an Eblana EP1560-0-DM-B05-FM, and the control laser was a ID Photonics CoBrite DX1. Both of these lasers were amplified by an erbium-doped fibre amplifier, before frequency doubling to 780 nm and 775 nm respectively. The rubidium cell used was enriched with the 87-isotope, and was purchased from Precision Glassblowing. It has anti-reflection coated, angled windows. The simulations were undertaken using Python code on the Imperial College London high performance computing system.


