Linewidth narrowing and Purcell enhancement in photonic crystal cavities on an Er-doped silicon nitride platform.

Journal Article (Journal Article)

Light emission at 1.54 microm from an Er-doped amorphous silicon nitride layer coupled to photonic crystal resonators at cryogenic and room temperatures and under varying optical pump powers has been studied. The results demonstrate that small mode volume, high quality factor resonators enhance Er absorption and emission rates at the cavity resonance. Time resolved measurements give 11- to 17-fold Purcell enhancement of spontaneous emission at cryogenic temperatures, and 2.4-fold enhancement at room temperature. Resonances exhibit linewidth narrowing with pump power, signifying absorption bleaching and partial inversion of the Er ions cryogenic temperatures. We estimate that 31% of Er ions are excited at the highest pump power.

Full Text

Duke Authors

Cited Authors

  • Gong, Y; Makarova, M; Yerci, S; Li, R; Stevens, MJ; Baek, B; Nam, SW; Hadfield, RH; Dorenbos, SN; Zwiller, V; Vuckovic, J; Dal Negro, L

Published Date

  • February 2010

Published In

Volume / Issue

  • 18 / 3

Start / End Page

  • 2601 - 2612

PubMed ID

  • 20174089

Electronic International Standard Serial Number (EISSN)

  • 1094-4087

International Standard Serial Number (ISSN)

  • 1094-4087

Digital Object Identifier (DOI)

  • 10.1364/oe.18.002601


  • eng