Design of an efficient terahertz source using triply resonant nonlinear photonic crystal cavities

作者：Burgess Ian B^*; Zhang Yinan; McCutcheon Murray W; Rodriguez Alejandro W; Bravo Abad Jorge; Johnson Steven G; Loncar Marko

来源：Optics Express, 2009, 17(22): 20099-20108.

DOI：10.1364/OE.17.020099

We propose a scheme for efficient cavity-enhanced nonlinear THz generation via difference-frequency generation (DFG) processes using a triply resonant system based on photonic crystal cavities. We show that high nonlinear overlap can be achieved by coupling a THz cavity to a doubly-resonant, dual-polarization near-infrared (e.g. telecom band) photonic-crystal nanobeam cavity, allowing the mixing of three mutually orthogonal fundamental cavity modes through a chi((2)) nonlinearity. We demonstrate through coupled-mode theory that complete depletion of the pump frequency -i.e., quantum-limited conversion - is possible. We show that the output power at the point of optimal total conversion efficiency is adjustable by varying the mode quality (Q) factors.

• 出版日期2009-10-26
• 单位MIT