Article
Multidisciplinary Sciences
Wenle Weng, Aleksandra Kaszubowska-Anandarajah, Jijun He, Prajwal D. Lakshmijayasimha, Erwan Lucas, Junqiu Liu, Prince M. Anandarajah, Tobias J. Kippenberg
Summary: The authors have successfully generated dissipative Kerr solitons with stable repetition rates and low optical power threshold by actively switching the bias current of injection-locked III-V semiconductor lasers and pulse-pumping crystalline and integrated microresonators.
NATURE COMMUNICATIONS
(2021)
Article
Optics
Jiang Li, Chengying Bao, Qing-Xin Ji, Heming Wang, Lue Wu, Stephanie Leifer, Charles Beichman, Kerry Vahala
Summary: The study focuses on the conversion efficiency in pulse pumped systems and demonstrates high single-soliton conversion efficiencies using a scanning laser. Analytical expressions developed through the Lagrangian approach reveal tuning dependence features of soliton power and efficiency not observed in continuous pumping.
Article
Optics
Jonathan Musgrave, Shu-Wei Huang, Mingming Nie
Summary: Optical frequency combs, especially microcombs generated from fiber Fabry-Perot microresonators, have significant applications in science and technology. They offer compact size, low cost, high-energy efficiency, and large comb spacing, making them attractive for various fields.
Article
Optics
Krishna Twayana, Fuchuan Lei, Zhichao Ye, Israel Rebolledo-Salgado, Oskar B. Helgason, Magnus Karlsson, Victor Torres-Company
Summary: We report a linear heterodyne technique assisted by electro-optic downconversion that enables differential phase measurement of microcombs with unprecedented sensitivity and bandwidth coverage.
Article
Optics
Oskar B. Helgason, Marcello Girardi, Zhichao Ye, Fuchuan Lei, Jochen Schroder, Victor Torres-Company
Summary: Laser frequency combs are being used in various scientific applications, and dissipative Kerr solitons in microresonators offer a promising way to achieve higher power conversion efficiency. By inducing a controllable frequency shift in two linearly coupled anomalous-dispersion microresonators, researchers have demonstrated a coherent dissipative Kerr soliton with a conversion efficiency exceeding 50% and excellent line spacing stability. This opens up possibilities for practical implementation of energy-efficient integrated photonic architectures.
Article
Optics
Zheng Gong, Mohan Shen, Juanjuan Lu, Joshua B. Surya, Hong X. Tang
Summary: Hybrid Kerr and electro-optic microcombs based on a lithium niobate thin film are demonstrated, enabling direct electronic detection and feedback control of terahertz soliton repetition rates by interleaving high-repetition-rate Kerr soliton comb with low-repetition-rate electro-optic comb on the same waveguide.
Article
Optics
Weixi LI, Zinan Huang, Xiangpeng Xiao, Zhijun Yan, Siyu Luo, Yingxiong Song, Chen Jiang, Yunqi Liu, Chengbo Mou
Summary: This study reveals a passively mode-locked erbium-doped fiber laser (EDFL) system utilizing a standard fiber Bragg grating (FBG) and the nonlinear polarization rotation (NPR) effect. The laser achieves a pulse width of 143 ps and an ultranarrow spectral bandwidth of 0.017 nm (2.13 GHz) under Fourier transform-limited conditions. The average output power is 2.8 mW, and the single-pulse energy is 0.19 nJ.
Article
Optics
Hanyu Ye, Lilia Pontagnier, Eric Cormier, Giorgio Santarelli
Summary: We propose and demonstrate a non-mode-locking approach to generating multi-gigahertz repetition rate, femtosecond pulses in burst mode by shaping a continuous-wave (CW) seed laser in an all-fiber configuration. The system eliminates the need for mode-locked cavities and simplifies conventional ultrafast electro-optic combs to using only one phase modulator, while providing femtosecond pulses at multiple gigahertz repetition rate, enhanced pulse energy in burst mode and the potential of further power/energy scaling.
Article
Optics
Yong Geng, Xinjie Han, XiaoXu Zhang, Yanlan Xiao, Sirong Qian, Qingsong Bai, Yunru Fan, Guangwei Deng, Qiang Zhou, Kun Qiu, Jing Xu, Heng Zhou
Summary: This Letter presents a detailed experimental investigation on the phase coherence between two on-chip Kerr soliton microcombs and analyzes the physical and technical origins of the mutual phase noise between the microcombs. The techniques of 2-point locking and optical frequency division are explored to enhance the dual-microcomb phase coherence.
Article
Optics
T. uo l Iu, S. uwan s Un, S. iyu w Ang, Y. ongyuan c Hu, H. airun g Uo
Summary: This study demonstrates soliton microcombs with broadband and dispersive intermode interactions in homedeveloped magnesium fluoride microresonators. The authors observed comb states with broadband spectral tailoring effect via an intermode pumping scheme, and identified footprints of both constructive and destructive interference on the comb spectrum.
PHOTONICS RESEARCH
(2022)
Article
Optics
Jingcheng Shang, Shengzhi Zhao, Yizhou Liu, Kejian Yang, Chun Wang, Yuefeng Zhao, Yuzhi Song, Ping Hu, Jiajia Mao, Tao Li, Tianli Feng
Summary: The gigahertz-pulse repetition rate, 2-μm harmonic mode-locking Tm-doped fiber oscillator is achieved using the nonlinear polarization rotation method. The oscillator operates in either < 2000-nm or > 2000-nm region and delivers high output powers with short pulse durations at different wavelengths.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Optics
Hao Liu, Shu-Wei Huang, Wenting Wang, Jinghui Yang, Mingbin Yu, Dim-Lee Kwong, Pierre Colman, Chee Wei Wong
Summary: Significant progress has been made in the generation of dissipative Kerr solitons in chip-scale nonlinear resonators, offering a wide range of applications. In this study, square pulse formation in the normal dispersion regime is achieved, and its tuning is demonstrated through modulation frequency. Experimental and modeling results confirm the observation of platicon pulses with different widths.
PHOTONICS RESEARCH
(2022)
Article
Optics
Yi Han, Haochen Tian, Fei Meng, Kai Wang, Shiying Cao
Summary: This paper demonstrates a robust all polarization-maintaining (PM) passively mode-locked Er-doped fiber laser based on the biased nonlinear amplifier loop mirror (NALM). By optimization, stable mode locking and short pulse width are achieved, showing potential for various applications.
Review
Optics
Yang Sun, Jiayang Wu, Mengxi Tan, Xingyuan Xu, Yang LI, Roberto Morandotti, Arnan Mitchell, David J. MOss
Summary: Optical microcombs are compact chip-scale devices that generate laser frequency combs, which have supported many technological advances in fundamental science and industrial applications. Their applications have rapidly progressed in the past decade, not only in traditional fields such as frequency synthesis, signal processing, and optical communications, but also in interdisciplinary fields including LiDAR, astronomical detection, neuromorphic computing, and quantum optics.
ADVANCES IN OPTICS AND PHOTONICS
(2023)
Article
Optics
Zong-Ren Yang, Pei-Hsun Wang
Summary: We theoretically investigate the stability of mode-coupling-assisted frequency comb generation in normal-dispersion microresonators. Our analysis quantitatively explores the modulational instability in the parameter space of pump power and detuning by considering the coupled mode number, dispersion, and coupling strength in the normalized Lugiato-Lefever model. We find that modulational stability gain exists, leading to extended spatial structures within the regime of eigenvalue bifurcations. Additionally, we discuss the dynamics and efficiency of microcombs, providing guidelines for high-efficient, stable, and controllable combs in a normal-dispersion system.
Article
Optics
Zachary L. Newman, Vincent Maurice, Tara Drake, Jordan R. Stone, Travis C. Briles, Daryl T. Spencer, Connor Fredrick, Qing Li, Daron Westly, B. R. Ilic, Boqiang Shen, Myoung-Gyun Suh, Ki Youl Yang, Cort Johnson, David M. S. Johnson, Leo Hollberg, Kerry J. Vahala, Kartik Srinivasan, Scott A. Diddams, John Kitching, Scott B. Papp, Matthew T. Hummon
Article
Multidisciplinary Sciences
Yu-Hung Lai, Yu-Kun Lu, Myoung-Gyun Suh, Zhiquan Yuan, Kerry Vahala
Article
Optics
Yu-Hung Lai, Myoung-Gyun Suh, Yu-Kun Lu, Boqiang Shen, Qi-Fan Yang, Heming Wang, Jiang Li, Seung Hoon Lee, Ki Youl Yang, Kerry Vahala
Article
Multidisciplinary Sciences
Liron Stern, Jordan R. Stone, Songhai Kang, Daniel C. Cole, Myoung-Gyun Suh, Connor Fredrick, Zachary Newman, Kerry Vahala, John Kitching, Scott A. Diddams, Scott B. Papp
Correction
Optics
Yu-Hung Lai, Myoung-Gyun Suh, Yu-Kun Lu, Boqiang Shen, Qi-Fan Yang, Heming Wang, Jiang Li, Seung Hoon Lee, Ki Youl Yang, Kerry Vahala
Article
Multidisciplinary Sciences
Heming Wang, Yu-Hung Lai, Zhiquan Yuan, Myoung-Gyun Suh, Kerry Vahala
NATURE COMMUNICATIONS
(2020)
Article
Physics, Multidisciplinary
Chengying Bao, Myoung-Gyun Suh, Boqiang Shen, Kemal Safak, Anan Dai, Heming Wang, Lue Wu, Zhiquan Yuan, Qi-Fan Yang, Andrey B. Matsko, Franz X. Kaertner, Kerry J. Vahala
Summary: Studies have found that coherently pumped solitons in an ideal optical microcavity exhibit weak interaction and common-mode suppression of quantum fluctuations when they are counter-propagating, while co-propagating solitons show relative timing jitter well below the quantum limit due to their strong correlation of mutual motion. The experimental results are in good agreement with theory, establishing the fundamental limits to timing jitter in soliton microcombs and providing new insights on multisoliton physics.
Article
Engineering, Electrical & Electronic
Mikael Mazur, Myoung-Gyun Suh, Attila Fulop, Jochen Schroder, Victor Torres-Company, Magnus Karlsson, Kerry J. Vahala, Peter A. Andrekson
Summary: Spectral efficiency (SE) is a key metric for optical communication networks, and optical superchannels can maximize SE by efficiently utilizing available bandwidth and minimizing guard-bands between channels. Microcombs are a promising solution for low power superchannel laser sources that provide high signal quality, broadband waveforms, but their realization with sufficient line power, coherence, and line spacing compatible with electronic bandwidths is extremely challenging.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Multidisciplinary Sciences
Chengying Bao, Zhiquan Yuan, Lue Wu, Myoung-Gyun Suh, Heming Wang, Qiang Lin, Kerry J. Vahala
Summary: The authors present a microcomb-based dual-comb spectroscopy sensor with GHz resolution for mid-infrared gas sensing. The system stability is determined by a single high-Q microresonator, making it simplified and eliminating the need for external frequency locking. The methane and ethane spectra can be measured over short intervals as 0.5 ms, showing potential for chip-based architectures in mid-IR gas sensors for various applications.
NATURE COMMUNICATIONS
(2021)
Article
Optics
Yu-Hung Lai, Zhiquan Yuan, Myoung-Gyun Suh, Yu-Kun Lu, Heming Wang, Kerry J. Vahala
Summary: Stimulated Brillouin scattering provides optical gain for efficient and narrow-linewidth lasers, but strict temperature control is required for long term frequency-stable operation. This study explores Brillouin backaction for measuring and phase-sensitively locking modal temperature to a reference temperature, offering a new approach for frequency-stable operation of Brillouin lasers.
Proceedings Paper
Engineering, Electrical & Electronic
Myoung-Gyun Suh, Yu-Hung Lai, Kerry J. Vahala
Summary: Optical gyroscopes are commonly used in precision navigation, and the interest in integrated optical gyroscopes is growing. This talk presents a chip-based Brillouin laser gyroscope with sensitivity to Earth rotation rate.
2021 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXPOSITION (OFC)
(2021)
Article
Optics
Chengying Bao, Boqiang Shen, Myoung-Gyun Suh, Heming Wang, Kemal Safak, Anan Dai, Andrey B. Matsko, Franz X. Kaertner, Kerry Vahala
Summary: This study demonstrates the phenomenon of soliton trapping between counterpropagating solitons in a silica microcavity due to counterpumping, where the group velocities undergo periodic modulation instead of being locked to a constant velocity. The solitons exhibit relative oscillatory motion upon emission from the microcavity, introducing a sideband fine structure into the optical spectrum. This observation provides insights on coherently pumped soliton dimers in microcavities.
Proceedings Paper
Engineering, Electrical & Electronic
K. Vahala, Y. H. Lai, M. G. Suh
2019 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2019)
Proceedings Paper
Engineering, Electrical & Electronic
Yu-Hung Lai, Myoung-Gyun Suh, Yu-Kun Lu, Boqiang Shen, Qi-Fan Yang, Jiang Li, Seung Hoon Lee, Ki Youl Yang, Kerry J. Vahala
2019 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2019)
Proceedings Paper
Engineering, Electrical & Electronic
Chengying Bao, Myoung-Gyun Suh, Kerry Vahala
2019 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2019)
