科研情况

非线性光学、超快光学、集成光学

非线性谐振腔如高Q值微腔中的非线性动力学过程，利用非线性光学效应产生新的光学频率，并最终可用于光学频率计量、时间频率标准、精密光谱分析、光通信、光学与微波信号合成等领域。我们关注光学频率梳在精密测量中的应用，为了实现更高精度的应用。目前已在Nature Physics, Physical Review Letters, Optica等期刊发表第一/通信作者文章25篇。我们关注但不限于以下应用领域。
1） 非线性系统中的孤子动力学过程
2） 低损耗、高集成度、色散调控的片上波导的加工
3） 基于集成光学器件的从微波、中红外到紫外的全电磁波谱信号合成
4） 高重频光频梳在高速光谱、距离及其他物理量测量上的应用
代表性论文如下：
1. C. Bao, M-G. Suh, K. Şafak, A. Dai, B. Shen, H. Wang, L. Wu, Z. Yuan, Q-F. Yang, A. Matsko, F. Kartner, and K. Vahala, “Quantum diffusion of microcavity solitons”, Nature Physics, 17, 462-466 (2021).
2. C. Bao†, Z. Yuan†, L. Wu, M.-G. Suh, H. Wang, Q. Lin, and K. Vahala, "Architecture for microcomb-based GHz-mid-infrared dual-comb spectroscopy" Nature Communications 12, 6573 (2021)
3. C. Bao, J. A. Jaramillo-Villegas, Y. Xuan, D. E. Leaird, M. Qi, and A. M. Weiner, “Observation of Fermi-Pasta-Ulam recurrence Induced by Breather Solitons in an Optical Microresonator”, Physical Review Letters 117, 163901 (2016).
4. C. Bao, Y. Xuan, C. Wang, A. Fulop, D. E. Leaird, M. Qi, and A. M. Weiner, “Observation of breathing dark pulses in normal dispersion optical microresonators”, Physical Review Letters 121, 257401 (2018).
5. C. Bao†, M-G. Suh†, and K. Vahala, “Microresonator soliton dual-comb imaging”, Optica, 6, 1110-1116 (2019).
6. C. Bao, Y. Xuan, D. E. Leaird, S. Wabnitz, M. Qi, and A. M. Weiner, “Spatial mode-interaction induced single soliton generation in microresonators”, Optica 4, 1011-1015 (2017).
7. C. Bao†, Z. Yuan†, H.Wang, L.Wu, B. Shen, K. Sung, S. Leifer, Q. Lin, andK. Vahala, “Interleaved differencefrequency-generation for microcomb spectral densification in the mid-infrared”, Optica, 7, 309-315 (2020).
8．C. Bao, W. Chang, C. Yang, N. Akhmediev, and S. T. Cundiff, “Observation of Coexisting Dissipative Solitons in a Modelocked Fiber Laser,” Physical Review Letters 115, 253903 (2015)
9. J. Li†, C. Bao†, Q.-X. Ji†, H. Wang, L. Wu, S. Leifer, C. Beichman and K. Vahala, "Efficiency of pulse pumped soliton microcombs", Optica 9, 231-239 (2022)