Ultrahigh-Q photonic crystal nanobeam cavities with H-shaped holes

作者：Deng, Chao-Sheng^*; Peng, Hong-Guang; Gao, Ya-Song; Zhong, Jian-Xin

来源：Physica E: Low-Dimensional Systems and Nanostructures , 2014, 63: 8-13.

DOI：10.1016/j.physe.2014.05.007

• Resonator
• Photonic crystal
• Microcavity

A novel one-dimensional photonic crystal InGaAsP nanobeam cavity perforated by H-shaped holes is proposed in this paper. By using the three-dimensional finite difference time domain method, the performances of the proposed cavity in terms of quality factor (Q) and mode volume (V) are analyzed numerically. The results show that an ultrahigh Q of -6.6 x 10(7) together with a relatively small V of similar to 0.59(lambda/n)(3) can be achieved, leading to the figure of merit Q/V as high as similar to 1.1 x 10(8) per cubic wavelength in a material. This proposed H-shaped hole cavity not only will be very beneficial for low- threshold nanoscale lasers and low power nonlinear devices, but could also serve as an excellent candidate of oplomechanical crystals for routing and coupling optical and mechanical energies.

• 出版日期2014-9
• 单位湘潭大学