摘要

The dissipative Kerr solitons offer broadband coherent and low-noise frequency combs and stable temporal pulse trains, having shown great potential applications in spectroscopy, communications, and metrology. Here, we have demonstrated the dissipative Kerr soliton generation in a microrod resonator and silicon nitride (Si3N4) microrings, by utilizing an auxiliary-laser assisted thermal response control. We have studied the evolution of the soliton generation processes during the scanning of the pump laser detuning, especially the breathing dissipative Kerr soliton, which shows uncertainties of around megahertz (MHz) order of the breathing period. This instability is the main obstacle for future applications. By applying a modulated signal to the pump laser, the breathing frequency can be injection locked to the modulation frequency and tuned over tens of MHz with frequency noise significantly suppressed. Our demonstration offers an alternative knob for the control of soliton dynamics in microresonators and paves a new avenue towards practical applications of breathing solitons.

报告人简介

董春华，中国科学技术大学教授，博导。2002-2006年就读于中国科学技术大学物理系获理学学士，2006-2011年就读于中国科学技术大学物理系获理学博士学位。博士毕业后去美国俄勒冈大学进行博士后研究，2013年入选中国科学技术大学的引进人才，回到中国科学技术大学负责微腔光学方面的研究工作。在腔机械振子、高品质因子微腔、微纳光学器件上多次取得重要突破。在Science (1篇)、Nature Photonics (1篇)、Nature Communications(2篇)、Physical Review Letters(2篇)、Optica (1篇)等重要学术刊物上以第一或通讯作者发表多篇文章。发表文章的SCI引用1900余次。