Optically triggered Q-switched photonic crystal laser

Optically triggered Q-switched photonic crystal laser

Photonic Crystal Nanolaser.

Abstract:
An optically triggered liquid crystal infiltrated Q-switched photonic crystal laser is demonstrated. A photonic crystal laser cavity was designed and fabricated to support two orthogonally polarized high-Q cavity modes after liquid crystal infiltration. By controlling the liquid crystal orientation via a layer of photoaddressable polymer and a writing laser, the photonic crystal lasing mode can be reversibly switched between the two modes which also switches the laser’s emission polarization and wavelength. The creation of the Q-switched laser demonstrates the benefits of customizing photonic crystal cavities to maximally synergize with an infiltrated material and illustrates the potential of integrating semiconductor nanophotonics with optical materials.
B. Maune, J. Witzens, T. Baehr-Jones, M. Kolodrubetz, H. Atwater, R. Hagen, Y. Qiu, and A. Scherer, Optically triggered Q-switched photonic crystal laser, Opt. Express 13, 4699-4707 (2005).