A5022151304- Advanced Fiber Laser Technologies
- Photonic and Optical Devices
- Mechanical and Optical Resonators
- Advanced Fiber Optic Sensors
- Nonlinear Photonic Systems
- Laser-Matter Interactions and Applications
- Photorefractive and Nonlinear Optics
- Photonic Crystal and Fiber Optics
- Cancer Treatment and Pharmacology
- Advanced Photonic Communication Systems
- Geophysics and Sensor Technology
- Polymer Foaming and Composites
- Semiconductor Lasers and Optical Devices
- Solid State Laser Technologies
- biodegradable polymer synthesis and properties
- Orbital Angular Momentum in Optics
- Photonic Crystals and Applications
- Spectroscopy Techniques in Biomedical and Chemical Research
- Quantum optics and atomic interactions
- Spectroscopy and Laser Applications
- Technology and Security Systems
- Photoacoustic and Ultrasonic Imaging
- Nonlinear Dynamics and Pattern Formation
- Spanish Literature and Culture Studies
- Carbon dioxide utilization in catalysis
Peking University
2013-2025
Beijing Technology and Business University
2024-2025
State Key Laboratory of Artificial Microstructure and Mesoscopic Physics
2022-2025
Beijing Academy of Quantum Information Sciences
2025
Collaborative Innovation Center of Quantum Matter
2022-2025
Shanxi University
2022-2025
Hefei University
2025
China Southern Power Grid (China)
2024
Lanzhou University
2024
Shanxi University of Traditional Chinese Medicine
2022-2024
Shrinking spectrometers Dual-comb spectroscopy is a powerful technique that uses the interference of two closely related combs to map spectroscopic features directly into frequency domain can be read by electronics. Suh et al. developed dual-comb approach using produced silica microresonators fabricated on silicon chip. Perhaps high-resolution will soon shrunk chip scale, doing away with need for bulky spectrometers. Science , this issue p. 600
Frequency combs are having a broad impact on science and technology because they provide way to coherently link radio/microwave-rate electrical signals with optical-rate derived from lasers atomic transitions.Integrating these systems photonic chip would revolutionize instrumentation, time keeping, spectroscopy, navigation, potentially create new mass-market applications.A key element of such system-on-a-chip will be mode-locked comb that can self-referenced.The recent demonstration soliton...
For its many useful properties, including second and third-order optical nonlinearity as well electro-optic control, lithium niobate is considered an important potential microcomb material. Here, a soliton demonstrated in monolithic high-Q resonator. Besides the demonstration of mode locking, photorefractive effect enables locking to self-start switching occur bi-directionally. Second-harmonic generation spectrum also observed, essential step for comb self-referencing. The Raman shock time...
Recent advances in nonlinear optics have revolutionized integrated photonics, providing on-chip solutions to a wide range of new applications. Currently, state the art photonic devices are mainly based on dielectric material platforms, such as Si
Soliton mode locking and femtosecond pulse generation have recently been demonstrated in high-Q optical microcavities provide a new way to miniaturize frequency comb systems, as well create integrated systems on chip.However, triggering the mode-locking process is complicated by well-known thermal hysteresis that can destabilize solitons.Moreover, longer time scale, drifting of cavity resonant relative pumping causes loss locking.In this Letter, an active feedback method used both capture...
Dissipative Kerr solitons are self-sustaining optical wavepackets in resonators. They use the nonlinearity to both compensate dispersion and offset loss. Besides providing insights into nonlinear resonator physics, they can be applied frequency metrology, precision clocks, spectroscopy. Like other solitons, dissipative soliton radiate power as a dispersive wave through process that is analogue of Cherenkov radiation. Dispersive waves typically consist an ensemble modes. Here, limiting case...
Silicon nitride (SiN) waveguides with ultra-low optical loss enable integrated photonic applications including low noise, narrow linewidth lasers, chip-scale nonlinear photonics, and microwave photonics. Lasers are key components to SiN circuits (PICs), but difficult fully integrate low-index due their large mismatch the high-index III-V gain materials. The recent demonstration of multilayer heterogeneous integration provides a practical solution enabled first-generation lasers waveguides....
Determination of laser frequency with high resolution under continuous and abrupt tuning conditions is important for sensing, spectroscopy, communications. We show that a single microresonator provides rapid broadband measurement optical frequencies relative precision comparable to conventional dual-frequency comb systems. Dual-locked counterpropagating solitons having slightly different repetition rates were used implement vernier spectrometer, which enabled characterization as 10 terahertz...
Dissipative Kerr cavity solitons experience a so-called self-frequency shift (SFS) as result of Raman interactions. The frequency has been observed in several microcavity systems. process also shown numerically to influence the soliton pumping efficiency. Here, perturbed Lagrangian approach is used derive simple analytical expressions for SFS and predicted dependences these quantities on pulse width are compared with measurements high-Q silica microcavity. time constant inferred. Analytical...
Since its invention, optical frequency comb has revolutionized a broad range of subjects from metrology to spectroscopy. The recent development microresonator-based combs (microcombs) provides unique pathway create systems on chip. Indeed, microcomb-based spectroscopy, ranging, synthesizer, telecommunications and astronomical calibrations have been reported recently. Critical many the integrated is coverage spectra. Here, microcombs more than two-octave span (450 nm 2,008 nm) demonstrated...
High optical quality (Q) factors are critically important in microcavities, where performance applications spanning nonlinear optics to cavity quantum electrodynamics is determined. Here, a record Q factor of over 1.1 billion demonstrated for on-chip resonators. Using silica whispering-gallery resonators on silicon, Q-factor data measured wavelengths the C/L bands (100 nm) and range resonator sizes mode families. A low sub-milliwatt parametric oscillation threshold also 9 GHz...
Abstract Optical microresonators with high quality ( Q ) factors are essential to a wide range of integrated photonic devices. Steady efforts have been directed towards increasing microresonator across variety platforms. With success in reducing microfabrication process-related optical loss as limitation , the ultimate attainable determined solely by constituent material absorption, has come into focus. Here, we report measurements material-limited several High- fabricated from thin films...
Microresonator soliton frequency combs offer unique flexibility in synthesizing microwaves over a wide range of frequencies, while their phase noise is currently limited by thermal noise. Enlarging the mode volume would mitigate but also raise power consumption. Here, we fabricate optical microresonators with large volumes lathe machining high-purity fiber preforms. Quality factors greater than 4 billion result record-low threshold 110 µW to initiate comb operation millimeter-sized devices....
The nonlinear propagation of optical pulses in dielectric waveguides and resonators induces a wide range remarkable interactions.One example is dispersive-wave generation, the analog Cherenkov radiation.These waves play an essential role fiber-optic spectral broadeners used spectroscopy metrology.Dispersive form when soliton pulse begins to radiate power as result higher-order dispersion.Recently, generation microcavities has been reported by phase matching dissipative Kerr solitons.Here, it...