Optomechanical and photothermal interactions in suspended photonic crystal membranes

David Woolf, Pui Chuen Hui, Eiji Iwase, Mughees Khan, Alejandro W. Rodriguez, Parag Deotare, Irfan Bulu, Steven G. Johnson, Federico Capasso, Marko Loncar*


研究成果: Article査読

29 被引用数 (Scopus)


We present here an optomechanical system fabricated with novel stress management techniques that allow us to suspend an ultrathin defect-free silicon photonic-crystal membrane above a Silicon-on-Insulator (SOI) substrate with a gap that is tunable to below 200 nm. Our devices are able to generate strong attractive and repulsive optical forces over a large surface area with simple in- and out- coupling and feature the strongest repulsive optomechanical coupling in any geometry to date (gOM/2π ≈ -65 GHz/nm). The interplay between the optomechanical and photo-thermalmechanical dynamics is explored, and the latter is used to achieve cooling and amplification of the mechanical mode, demonstrating that our platform is well-suited for potential applications in low-power mass, force, and refractive-index sensing as well as optomechanical accelerometry.

ジャーナルOptics Express
出版ステータスPublished - 2013 3月 25

ASJC Scopus subject areas

  • 原子分子物理学および光学


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