Nanophotonic Interactions of Resonant Cesium Atoms with 3D Opal Photonic Crystals

Pinkse, P. (Speaker), Philip Harding (Contributor), Allard Mosk (Contributor), Vos, W. (Contributor)

Activity: Talk or presentationOral presentation


We have introduced hot Cs vapor in a silica opal photonic crystal to observe novel nanophotonic properties. In comparison to dyes and quantum dots, gaseous alkali atoms are better understood and have strong and very narrow resonances ω/dω = 107. As the temperature is increased, we observe shifts of the opals reflectivity peak in excess of 20%, which is attributed to the reduction of the silica to SiOx. This shift tunes the frequency of the photonic bands relative to the near-infrared Cs D1 transition. Simultaneously, the Cs resonances undergo dramatic changes in strength, off-resonance reflectivity, and shape. The results are in good agreement with a transfer-matrix model including the dispersion and absorption of two of the Cs hyperfine transitions.
Period12 Mar 2010
Event titleDPG Frühjahrstagung 2010 Hannover: (DPG Spring Meeting)
Event typeConference
LocationHannover, Germany
Degree of RecognitionInternational


  • METIS-263262