Article
Physics, Multidisciplinary
Yan Bai, Menghua Zhang, Qi Shi, Shulin Ding, Yingchun Qin, Zhenda Xie, Xiaoshun Jiang, Min Xiao
Summary: By generating a Brillouin laser in an optical microresonator and exciting the Kerr frequency comb in the same cavity, a soliton Kerr microcomb was achieved with narrow-linewidth comb lines and stable repetition rate. The system also demonstrated a low-noise microwave signal with excellent phase noise characteristics, showing promising practical applications.
PHYSICAL REVIEW LETTERS
(2021)
Article
Optics
Yoshitomo Okawachi, Bok Young Kim, Yun Zhao, Jae K. Jang, Xingchen Ji, Michal Lipson, Alexander L. Gaeta
Summary: Kerr soliton combs operate in the anomalous group-velocity dispersion regime and can be actively tuned for spectral shaping of the soliton spectrum. Active tuning of dispersive-wave (DW) wavelength is demonstrated through wavelength-controllable avoided mode crossing, allowing for post-fabrication control of the comb lines' power and position.
Article
Multidisciplinary Sciences
Bok Young Kim, Jae K. Jang, Yoshitomo Okawachi, Xingchen Ji, Michal Lipson, Alexander L. Gaeta
Summary: In this study, all-optical synchronization of Kerr combs is demonstrated in the nonsolitonic, normal GVD regime, generating phase-locked combs with high pump-to-comb conversion efficiencies and relatively flat spectral profiles. The results reveal the universality of Kerr comb synchronization and suggest a promising path towards coherently combined normal GVD Kerr combs with spectrally flat profiles and high comb-line powers in an efficient microresonator platform.
Article
Optics
Damia Gomila, Pedro Parra-Rivas, Pere Colet, Aurelien Coillet, Guoping Lin, Thomas Daugey, Souleymane Diallo, Jean-Mare Merolla, Yanne K. Chembo
Summary: The Eckhaus instability is a secondary instability that can occur in Kerr combs, leading to pattern cracking and peak rearrangement. This phenomenon results in a metastable state with a significantly longer timescale compared to previous transient behaviors.
Article
Optics
Jae K. Jang, Yoshitomo Okawachi, Yun Zhao, Xingchen Ji, Chaitanya Joshi, Michal Lipson, Alexander L. Gaeta
Summary: Our study investigates the conversion efficiency of soliton modelocked Kerr frequency combs, revealing three distinct scaling regimes with the cavity free spectral range. We verify our theoretical predictions through measurements for critically coupled cases and find that mode crossings have a negative impact on achievable CE. Our results suggest that microresonator combs with spacings in the electronically detectable regime are highly inefficient, which could impact integrated Kerr comb devices.
Article
Optics
Bok Young Kim, Yoshitomo Okawachi, Jae K. Jang, Xingchen Ji, Michal Lipson, Alexander L. Gaeta
Summary: A high efficient coherent beam combining of Kerr combs is demonstrated via on-chip synchronization to greatly enhance comb-line powers. This technology allows the power of comb systems to exceed that of an individual comb system by more than an order of magnitude, which is beneficial for applications such as data communications and spectroscopy.
LASER & PHOTONICS REVIEWS
(2023)
News Item
Optics
Yann Le Coq
Summary: The chip-based optical frequency comb has achieved a 300 GHz signal with record low phase noise, potentially leading to ultra-compact, ultra-low-noise sources for millimetre-wave applications in telecommunications, remote sensing, and precision spectroscopy.
Article
Optics
Shuangyou Zhang, Toby Bi, Pascal Del'Haye
Summary: Chip-scale optical frequency combs have attracted significant research interest and can be used in various applications. Microresonator based frequency combs can generate self-stabilized soliton pulses, either bright solitons in the anomalous dispersion regime or dark solitons in the normal dispersion regime. This study investigates the dynamics of soliton generation and the generation of solitons crossing different dispersion regimes.
LASER & PHOTONICS REVIEWS
(2023)
Article
Optics
Pedro Parra-Rivas, Sabrina Hetzel, Yaroslav Kartashov, Pedro Fernandez de Cordoba, J. Alberto Conejero, Alejandro Aceves, Carles Milian
Summary: We theoretically investigate the dynamics, bifurcation structure, and stability of localized states in Kerr cavities driven at the pure fourth-order dispersion point. The study reveals the existence of stable narrow bright solitons in the normal group velocity dispersion regime and stable single and multi-peak localized states in the anomalous regime over a wider parameter space.
Article
Mathematics, Interdisciplinary Applications
M. Tlidi, M. Bataille-Gonzalez, M. G. Clerc, L. Bahloul, S. Coulibaly, B. Kostet, C. Castillo-Pinto, K. Panajotov
Summary: In this paper, we theoretically investigate the combined impact of the Kerr and stimulated Raman scattering effect on localized structures and frequency comb generation. We focus on the traveling wave instability regime and derive a Swift-Hohenberg equation with nonlocal delayed feedback to describe the system. By estimating thresholds and speeds, we characterize the motion of traveling wave periodic solutions. Numerical simulations confirm the existence of isolas of localized structures, and we demonstrate that stimulated Raman scattering strongly affects the dynamics of these structures and induces their motion. We also provide a geometric interpretation of the formation of isola stacks based on dynamical systems theory.
CHAOS SOLITONS & FRACTALS
(2023)
Article
Materials Science, Multidisciplinary
Zhen Jiang, Lefeng Zhou, Wei Li, Yudong Li, Liangsen Feng, Tengfei Wu, Chun Jiang, Guangqiang He
Summary: In this study, we propose a valley photonic crystal resonator emulating topologically protected dissipative Kerr soliton combs and experimentally demonstrate the existence of topological resonator modes and the dynamic evolution of topological optical frequency combs. These combs exhibit inherent topological protection and can be implemented in on-chip nanofabricated photonic devices.
Article
Optics
Mulong Liu, Huimin Huang, Zhizhou Lu, Yuanyuan Wang, Yanan Cai, Wei Zhao
Summary: The study focuses on the generation of dark breathers and Raman-Kerr microcombs in silicon microresonators, influenced by stimulated Raman scattering and high-order dispersion effects. The results show that Raman gain exhibits a threshold behavior, while breathing dark pulses are mainly dependent on the amplitude and sign of the third-order dispersion coefficient. Additionally, the demonstration of octave-spanning mid-infrared frequency combs via Cherenkov radiation suggests a viable way to investigate physics within dark pulses and broadband MIR microcombs.
Article
Optics
Xinjie Han, Yong Geng, Haocheng Ke, Kun Qiu
Summary: We demonstrate a phase-sensitive and amplification-based all-optical phase regenerator by utilizing on-chip Kerr soliton combs. In the experiment, we directly generate a Kerr soliton comb in a silicon nitride micro-ring at the receiver side of optical communication systems by applying the transmitted signal as a pump light. The mutual coherence between the signal and the regenerated Kerr comb is excellent, and the all-optical phase regeneration of a 20 GBaud/s QPSK signal is achieved. Our solution shows better SWaP factors compared to traditional schemes, and our study will enhance the relay and reception performance of all-optical communication systems.
Article
Optics
Xingchen Ji, Jae K. Jang, Utsav D. Dave, Mateus Corato-Zanarella, Chaitanya Joshi, Alexander L. Gaeta, Michal Lipson
Summary: Low propagation loss in high confinement waveguides is achieved by shaping the mode using a highly multimode structure to reduce overlap with waveguide interfaces, without the need for sophisticated fabrication processes. Experimental demonstration of microresonators with intrinsic quality factors of 31.8 +/- 4.4 million is provided, showing the generation of a broadband single-soliton frequency comb without higher order modes.
LASER & PHOTONICS REVIEWS
(2021)
Article
Optics
Erwan Lucas, Moise Deroh, Bertrand Kibler
Summary: Highly coherent frequency combs are important for a variety of applications including optical synthesis and metrology, spectroscopy, laser ranging, and optical communications. This study investigates the generation of Kerr combs in a bi-chromatic Brillouin fiber laser, using a numerical model to analyze the interplay between Brillouin scattering, Kerr effect, and cavity resonant feedback. The results highlight the importance of pump laser detuning in setting the comb's properties and provide scaling laws for these systems. The limitations of the scheme, such as mode pulling effect and multi-mode lasing, are discussed and previous experimental results are better understood.
LASER & PHOTONICS REVIEWS
(2023)
Article
Astronomy & Astrophysics
Caleb I. Canas, Suvrath Mahadevan, William D. Cochran, Chad F. Bender, Eric D. Feigelson, C. E. Harman, Ravi Kumar Kopparapu, Gabriel A. Caceres, Scott A. Diddams, Michael Endl, Eric B. Ford, Samuel Halverson, Fred Hearty, Sinclaire Jones, Shubham Kanodia, Andrea S. J. Lin, Andrew J. Metcalf, Andrew Monson, Joe P. Ninan, Lawrence W. Ramsey, Paul Robertson, Arpita Roy, Christian Schwab, Gudmundur Stefansson
Summary: This study validates the planetary nature of an ultra-short-period planet orbiting the M dwarf KOI-4777. The planet, KOI-4777.01, is the smallest validated ultra-short period planet known and no evidence of additional massive companions has been found.
ASTRONOMICAL JOURNAL
(2022)
Article
Astronomy & Astrophysics
Shubham Kanodia, Lawrence W. Ramsey, Marissa Maney, Suvrath Mahadevan, Caleb Canas, Joe P. Ninan, Andrew Monson, Adam F. Kowalski, Maximos C. Goumas, Gudmundur Stefansson, Chad F. Bender, William D. Cochran, Scott A. Diddams, Connor Fredrick, Samuel Halverson, Fred Hearty, Steven Janowiecki, Andrew J. Metcalf, Stephen C. Odewahn, Paul Robertson, Arpita Roy, Christian Schwab, Ryan C. Terrien
Summary: High-resolution observations using the HPF spectrograph reveal the presence of a flaring event in the M8 dwarf vB 10, with a red asymmetry in the He λ10830 triplet similar to coronal rain in the Sun. Time-series analysis of the flare and comparisons with historical observations provide constraints on the energy and frequency of such flares, allowing for an estimation of flare-induced atmospheric mass loss for hypothetical planets around vB 10.
ASTROPHYSICAL JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Ricardo Bustos-Ramirez, Chinmay Shirpurkar, Srinivas Pericherla, Lawrence R. Trask, Travis C. Briles, Jordan R. Stone, Su-Peng Yu, Ashish Bhardwaj, Gloria E. Hoefler, Scott B. Papp, Peter J. Delfyett
Summary: In this study, a synchronized mode-locked laser photonic integrated circuit with a repetition rate of 10 GHz is achieved through regenerative harmonic injection locking assisted with electro-optic division. The laser is optically synchronized to a SiN microresonator-based dissipative Kerr soliton with a repetition rate of 305 GHz, resulting in a highly stable repetition rate.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Optics
C. Shirpurkar, J. Zang, K. Y. Yang, D. Carlson, S. P. Yu, E. Lucas, S. Pericherla, J. Yang, M. Guidry, D. Lukin, G. H. Ahn, J. Lu, L. Trask, F. Aflatouni, J. Vuckovic, S. B. Papp, P. J. Delfyett
Summary: The experimental demonstration presents a 400 Gbit/s optical communication link utilizing wavelength-division multiplexing and mode-division multiplexing, with a novel 400 GHz frequency comb source and 4x4 mode-division multiplexer structures for increased data capacity.
Article
Multidisciplinary Sciences
Su-Peng Yu, Erwan Lucas, Jizhao Zang, Scott B. Papp
Summary: This study demonstrates a continuum from dark pulse to bright pulse states in a Kerr-nonlinear resonator with normal dispersion and photonic crystal ring resonators, and explores the underlying mechanism and physical roles.
NATURE COMMUNICATIONS
(2022)
Article
Optics
Kaikai Liu, Nitesh Chauhan, Jiawei Wang, Andrei Isichenko, Grant M. Brodnik, Paul A. Morton, Ryan O. Behunin, Scott B. Papp, Daniel J. Blumenthal
Summary: Laser stabilization is crucial for precision scientific experiments and applications. This study presents a significant advancement in integrated laser linewidth narrowing and noise reduction using a photonic integrated coil resonator to stabilize a semiconductor laser.
Article
Optics
Kaikai Liu, John H. Dallyn, Grant M. Brodnik, Andrei Isichenko, Mark W. Harrington, Nitesh Chauhan, Debapam Bose, Paul A. Morton, Scott B. Papp, Ryan O. Behunin, Daniel J. Blumenthal
Summary: The research reports a significant advancement in the integration of stabilized lasers, where a waveguide Brillouin laser was stabilized to a waveguide reference cavity using the same CMOS-compatible integration platform. The achieved performance demonstrates high stability and low noise for various applications.
Article
Astronomy & Astrophysics
Shubham Kanodia, Suvrath Mahadevan, Jessica Libby-Roberts, Gudmundur Stefansson, Caleb I. Canas, Anjali A. A. Piette, Alan Boss, Johanna Teske, John Chambers, Greg Zeimann, Andrew Monson, Paul Robertson, Joe P. Ninan, Andrea S. J. Lin, Chad F. Bender, William D. Cochran, Scott A. Diddams, Arvind F. Gupta, Samuel Halverson, Suzanne Hawley, Henry A. Kobulnicky, Andrew J. Metcalf, Brock A. Parker, Luke Powers, Lawrence W. Ramsey, Arpita Roy, Christian Schwab, Tera N. Swaby, Ryan C. Terrien, John Wisniewski
Summary: We report the discovery of TOI-5205b, a transiting Jovian planet orbiting a solar metallicity M4V star. It has one of the highest mass ratios for M-dwarf planets, and its large size results in one of the deepest transits of a confirmed exoplanet orbiting a main-sequence star. TOI-5205b's high mass challenges conventional theories of planet formation and disk scaling relations.
ASTRONOMICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Jessica E. Libby-Roberts, Maria Schutte, Leslie Hebb, Shubham Kanodia, Caleb I. Canas, Guomundur Stefansson, Andrea S. J. Lin, Suvrath Mahadevan, Winter Parts, Luke Powers, John Wisniewski, Chad F. Bender, William D. Cochran, Scott A. Diddams, Mark E. Everett, Arvind F. Gupta, Samuel Halverson, Henry A. Kobulnicky, Adam F. Kowalski, Alexander Larsen, Andrew Monson, Joe P. Ninan, Brock A. Parker, Lawrence W. Ramsey, Paul Robertson, Christian Schwab, Tera N. Swaby, Ryan C. Terrien
Summary: We conducted a thorough analysis of the TOI-3884 system, which is a validated M4-dwarf star with a transiting super-Neptune. Through high-precision light curves and radial velocity observations, we determined the planetary mass and radius of TOI-3884b. We also observed a starspot crossing event after every ingress, revealing wavelength dependence and evolving amplitude and duration over time. This system provides a unique opportunity to study the nature of a misaligned super-Neptune and spot evolution on an active mid-M dwarf.
ASTRONOMICAL JOURNAL
(2023)
Article
Optics
Megan L. Kelleher, Charles A. Mclemore, Dahyeon Lee, Josue Davila-Rodriguez, Scott A. Diddams, Franklyn Quinlan
Summary: We have developed and demonstrated a compact portable Fabry-Perot optical reference cavity with a volume of less than 6 mL. The laser locked to the cavity achieves a thermal noise-limited fractional frequency stability of 2 x 10-14. By utilizing an electro-optic modulator for broadband feedback control, our design achieves near thermal-noise-limited phase noise performance from 1 Hz to 10 kHz offset frequencies. The low vibration, temperature, and holding force sensitivity of our design make it suitable for various out-of-the-lab applications such as optically derived low noise microwave generation, compact and mobile optical atomic clocks, and environmental sensing through deployed fiber networks.
Article
Optics
Chad Ropp, Wenqi Zhu, Alexander Yulaev, Daron Westly, Gregory Simelgor, Akash Rakholia, William Lunden, Dan Sheredy, Martin M. Boyd, Scott Papp, Amit Agrawal, Vladimir Aksyuk
Summary: The commercialization of atomic technologies requires compact and manufacturable optical platforms. This work combines integrated photonics and metasurface optics to create a compact strontium atomic clock. The design includes twelve beams and two co-propagating beams, allowing scalability to an arbitrary number of beams.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Article
Astronomy & Astrophysics
Andrea S. J. Lin, Jessica E. Libby-Roberts, Jaime A. Alvarado-Montes, Caleb I. Canas, Shubham Kanodia, Te Han, Leslie Hebb, Eric L. N. Jensen, Suvrath Mahadevan, Luke C. Powers, Tera N. Swaby, John Wisniewski, Corey Beard, Chad F. Bender, Cullen H. Blake, William D. Cochran, Scott A. Diddams, Robert C. Frazier, Connor Fredrick, Michael Gully-Santiago, Samuel Halverson, Sarah E. Logsdon, Michael W. McElwain, Caroline Morley, Joe P. Ninan, Jayadev Rajagopal, Lawrence W. Ramsey, Paul Robertson, Arpita Roy, Christian Schwab, Guomundur Stefansson, Daniel J. Stevens, Ryan C. Terrien, Jason T. Wright
Summary: TOI-1899 b is a rare exoplanet, a temperate warm Jupiter orbiting an M dwarf. By accurately measuring its orbital period, radius, planet mass, and eccentricity, we can gain a better understanding of the characteristics and formation mechanisms of this planet.
ASTRONOMICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Caleb I. Canas, Shubham Kanodia, Jessica Libby-Roberts, Andrea S. J. Lin, Maria Schutte, Luke Powers, Sinclaire Jones, Andrew Monson, Songhu Wang, Gudmundur Stefansson, William D. Cochran, Paul Robertson, Suvrath Mahadevan, Adam F. Kowalski, John Wisniewski, Brock A. Parker, Alexander Larsen, Franklin A. L. Chapman, Henry A. Kobulnicky, Arvind F. Gupta, Mark E. Everett, Bryan Edward Penprase, Gregory Zeimann, Corey Beard, Chad F. Bender, Knicole D. Colon, Scott A. Diddams, Connor Fredrick, Samuel Halverson, Joe P. Ninan, Lawrence W. Ramsey, Arpita Roy, Christian Schwab
Summary: We confirm the planetary nature of two gas giants discovered by TESS that transit M dwarfs with stellar companions at wide separations. TOI-3984 A is an M4 dwarf hosting a short-period gas giant with a wide-separation white dwarf companion. TOI-5293 A is an M3 dwarf hosting a short-period gas giant with a wide-separation M dwarf companion.
ASTRONOMICAL JOURNAL
(2023)
