
1.Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
2.National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin 150080, China
3.Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
4.Department of Physics and Astronomy, College of Staten Island, CUNY, Staten Island, NY 10314, USA
5.The Graduate Center, CUNY, New York, NY 10016, USA
Shumin Xiao (shumin.xiao@hit.edu.cn)
Li Ge (li.ge@csi.cuny.edu)
Qinghai Song (qinghai.song@hit.edu.cn)
Published:31 August 2021,
Published Online:30 June 2021,
Received:15 April 2021,
Revised:15 June 2021,
Accepted:17 June 2021
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Wang, S. et al. Direct observation of chaotic resonances in optical microcavities. Light: Science & Applications, 10, 1455-1461 (2021).
Wang, S. et al. Direct observation of chaotic resonances in optical microcavities. Light: Science & Applications, 10, 1455-1461 (2021). DOI: 10.1038/s41377-021-00578-7.
Optical microcavities play a significant role in the study of classical and quantum chaos. To date
most experimental explorations of their internal wave dynamics have focused on the properties of their inputs and outputs
without directly interrogating the dynamics and the associated mode patterns inside. As a result
this key information is rarely retrieved with certainty
which significantly restricts the verification and understanding of the actual chaotic motion. Here we demonstrate a simple and robust approach to directly and rapidly map the internal mode patterns in chaotic microcavities. By introducing a local index perturbation through a pump laser
we report a spectral response of optical microcavities that is proportional to the internal field distribution. With this technique
chaotic modes with staggered mode spacings can be distinguished. Consequently
a complete chaos assisted tunneling (CAT) and its time-reversed process are experimentally verified in the optical domain with unprecedented certainty.
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