Experimental demonstration of second-order processes in photonic crystal microcavities at submilliwatt excitation powers

被引：52

作者：

McCutcheon, Murray W. ^{[1
]}

Young, Jeff F. ^{[1
]}

Rieger, Georg W. ^{[1
]}

Dalacu, Dan ^{[2
]}

Frederick, Simon ^{[2
,3
]}

Poole, Philip J. ^{[2
]}

Williams, Robin L. ^{[2
,3
]}

机构：

[1] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada

[2] Natl Res Council Canada, Inst Microstruct Sci, Ottawa, ON K1A 0R6, Canada

[3] Univ Ottawa, Dept Phys, Ottawa, ON K1N 6N5, Canada

来源：

PHYSICAL REVIEW B | 2007年 / 76卷 / 24期

关键词：

D O I：

10.1103/PhysRevB.76.245104

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The far-field second-order radiation pattern from a wavelength-scale, InP-based photonic crystal microcavity that confines light in three dimensions is measured when excited on resonance by 300 mu W of continuous-wave power from a laser diode. The measurements are accurately simulated using the finite-difference time-domain method, showing that both absorption and scattering play significant roles in determining the pattern of the radiation. The results show that the bulk second-order nonlinear susceptibility mediates the nonlinear process. In a separate set of experiments, a short-pulse laser is used to simultaneously populate two distinct modes of a similar microcavity. The detected second-order spectra show features due to the second harmonic generated by each mode, as well as the sum-frequency generation due to nonlinear intermode mixing. The key phenomena that determine the second-order response of these fundamentally small optical cavities are identified.

引用

页数：6

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