基于片上正常色散微谐振器的锁模超短脉冲产生

Mode-locked ultrashort pulse generation from on-chip normal dispersion microresonators.

作者信息

Huang S-W, Zhou H, Yang J, McMillan J F, Matsko A, Yu M, Kwong D-L, Maleki L, Wong C W

机构信息

Mesoscopic Optics and Quantum Electronics, University of California, Los Angeles, California 90095, USA and Optical Nanostructures Laboratory, Center for Integrated Science and Engineering, Solid-State Science and Engineering, and Mechanical Engineering, Columbia University, New York, New York 10027, USA.

Optical Nanostructures Laboratory, Center for Integrated Science and Engineering, Solid-State Science and Engineering, and Mechanical Engineering, Columbia University, New York, New York 10027, USA.

出版信息

Phys Rev Lett. 2015 Feb 6;114(5):053901. doi: 10.1103/PhysRevLett.114.053901. Epub 2015 Feb 4.

DOI:10.1103/PhysRevLett.114.053901

PMID:25699441

Abstract

We describe generation of stable mode-locked pulse trains from on-chip normal dispersion microresonators. The excitation of hyperparametric oscillation is facilitated by the local dispersion disruptions induced by mode interactions. The system is then driven from hyperparametric oscillation to the mode-locked state with over 200 nm spectral width by controlled pump power and detuning. With the continuous-wave-driven nonlinearity, the pulses sit on a pedestal, akin to a cavity soliton. We identify the importance of pump detuning and wavelength-dependent quality factors in stabilizing and shaping the pulse structure, to achieve a single pulse inside the cavity. We examine the mode-locking dynamics by numerically solving the master equation and provide analytic solutions under appropriate approximations.

摘要

我们描述了从片上正常色散微谐振器产生稳定的锁模脉冲序列。模式相互作用引起的局部色散扰动促进了超参量振荡的激发。然后通过控制泵浦功率和失谐，使系统从超参量振荡驱动到具有超过200nm光谱宽度的锁模状态。利用连续波驱动的非线性，脉冲位于一个类似于腔孤子的基座上。我们确定了泵浦失谐和波长相关品质因数在稳定和塑造脉冲结构以在腔内实现单个脉冲方面的重要性。我们通过数值求解主方程来研究锁模动力学，并在适当近似下提供解析解。