A5076699095- Advanced Fiber Laser Technologies
- Photonic Crystal and Fiber Optics
- Photonic and Optical Devices
- Laser-Matter Interactions and Applications
- Medical Research and Treatments
- Cancer Research and Treatments
- Advanced Frequency and Time Standards
- Optical Network Technologies
- Advanced Fiber Optic Sensors
- Solid State Laser Technologies
- Photonic Crystals and Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Semiconductor Lasers and Optical Devices
- Atomic and Subatomic Physics Research
- Radiomics and Machine Learning in Medical Imaging
- Spectroscopy and Laser Applications
- Cancer Mechanisms and Therapy
- Advanced Photonic Communication Systems
- Cancer-related molecular mechanisms research
- RNA modifications and cancer
- interferon and immune responses
- Laser Design and Applications
- Semiconductor Quantum Structures and Devices
- Quantum optics and atomic interactions
- Laser Material Processing Techniques
Wuhan University of Technology
2025
Nanjing University of Aeronautics and Astronautics
2022-2025
Tianjin Medical University Eye Hospital
2025
Jet Propulsion Laboratory
2020-2024
Chinese Academy of Sciences
2013-2024
Nanjing Drum Tower Hospital
2024
Guangzhou University
2024
UNSW Sydney
2018-2024
Peking University
2013-2024
Inner Mongolia Medical University
2024
The pursuit of better atomic clocks has advanced many research areas, providing quantum state control, new insights in science, tighter limits on fundamental constant variation, and improved tests relativity. record for the best stability accuracy is currently held by optical lattice clocks. This work takes an important step towards realizing full potential a many-particle clock with state-of-the-art stable laser. Our 87Sr now achieves fractional 2.2e-16 at 1 s. With this stability, we...
We describe the physical properties of excitons in hybrid complexes composed semiconductor and metal nanoparticles. The interaction between individual nanoparticles is revealed as an enhancement or suppression emission. Enhanced emission comes from electric field amplified by plasmon resonance, whereas a result energy transfer to intensity rate depend strongly on geometrical parameters superstructure material In particular, effect appears for with relatively small quantum yield, silver have...
We report on two ultrastable lasers each stabilized to independent silicon Fabry-P\'erot cavities operated at 124 K. The fractional frequency instability of laser is completely determined by the fundamental thermal Brownian noise mirror coatings with a flicker floor $4 \times 10^{-17}$ for integration times between 0.8 s and few tens seconds. rigorously treat notorious divergencies encountered associated derive methods relate this observable practically relevant linewidths coherence times....
Strontium optical lattice clocks have the potential to simultaneously interrogate millions of atoms with a high spectroscopic quality factor $4 \times 10^{-17}$. Previously, atomic interactions forced compromise between clock stability, which benefits from large atom number, and accuracy, suffers density-dependent frequency shifts. Here, we demonstrate scalable solution takes advantage high, correlated density degenerate Fermi gas in three-dimensional guard against on-site interaction We...
Numerous modern technologies are reliant on the low-phase noise and exquisite timing stability of microwave signals. Substantial progress has been made in field photonics, whereby low-noise signals generated by down-conversion ultrastable optical references using a frequency comb
Controlling femtosecond optical pulses with temporal precision better than one cycle of the carrier field has a profound impact on measuring and manipulating interactions between light matter. We explore that are carved from continuous-wave laser via electro-optic modulation realize regime sub-cycle control without mode-locked resonator. Our ultrafast source, repetition rate 10 GHz, is derived an optical-cavity-stabilized microwave-cavity-stabilized electronic oscillator. Sub-cycle timing...
Substrate-transferred crystalline coatings have recently emerged as a groundbreaking new concept in optical interference coatings. Building upon our initial demonstration of this technology, we now realized significant improvements the limiting performance these novel single-crystal GaAs/AlxGa1−xAs multilayers. In near-infrared (NIR), for coating center wavelengths spanning 1064–1560 nm, reduced excess losses (scatter + absorption) to levels low 3 parts per million (ppm), enabling...
Active control and cancellation of residual amplitude modulation (RAM) in phase an optical carrier is one the key technologies for achieving ultimate stability a laser locked to ultrastable cavity. Furthermore, such techniques are versatile tools various frequency modulation-based spectroscopy applications. In this Letter we report simple robust approach actively stabilize RAM process. We employ waveguide-based electro-optic modulator (EOM) provide implement active servo with both DC...
In this Letter we report on an all optical-fiber approach to the synthesis of ultralow-noise microwave signals by photodetection femtosecond laser pulses. We use a cascade Mach-Zehnder fiber interferometers realize stable and efficient repetition rate multiplication. This technique increases signal level photodetected close 18 dB. That in turn allows us demonstrate residual phase-noise -118 dBc/Hz at 1 Hz -160 10 MHz from 12 GHz signal. The noise floor multiplier system alone is around -164...
Abstract Flexible actuators have important applications in artificial muscles, robotics, optical devices, and so on. However, most of the conventional only actuation function, lacking real‐time sensing signal feedbacks. Here, to break limitation add functionality actuators, a graphene‐based actuator with integrated‐sensing function is reported, which avoids dependence on image post‐processing for detection realizes measurement shape‐deformation amplitudes actuator. The able show large...
We report on a laser locked to silicon cavity operating continuously at 4 K with $1 \times 10^{-16}$ instability and median linewidth of 17 mHz 1542 nm. This is ten-fold improvement in short-term instability, $10^4$ linewidth, over previous sub-10 systems. Operating low temperatures reduces the thermal noise floor, thus advantageous toward reaching an $10^{-18}$, long-sought goal optical clock community. The performance this system demonstrates technical readiness for development next...
On-chip spectroscopic sensors have attracted increasing attention for portable and field-deployable chemical detection applications.So far, these largely rely on benchtop tunable lasers interrogation.Large footprint mechanical fragility of the sources, however, preclude compact sensing system integration.In this paper, we address challenge through demonstrating, first time to our knowledge, a supercontinuum source integrated on-chip sensor, where leverage nonlinear Ge 22 Sb 18 Se 60...
Normal group velocity dispersion (GVD) microcombs offer high comb line power and pumping efficiency compared to bright pulse microcombs. The recent demonstration of normal GVD using CMOS foundry-produced microresonators is an important step toward scalable production. However, the chromatic devices large impairs generation broadband Here, we report development a microresonator in which reduced due coupled-ring resonator configuration. Operating turnkey self-injection locking mode, integrated...
Benefitting from narrow beam divergence, photonic crystal surface-emitting lasers are expected to play an essential role in the ever-growing fields of optical communication and light detection ranging. Lasers operating with 1.55 μm wavelengths have attracted particular attention due their minimum fiber loss high eye-safe threshold. However, interband absorption significantly decreases performance at this wavelength. Therefore, stronger feedback is needed reduce threshold thus improve output...
We present an assessment of the ($6{s}^{2}$) $^{1}S_{0}\ensuremath{\leftrightarrow}(6s6p)^{3}P_{0}$ clock transition frequency in $^{199}\mathrm{Hg}$ with uncertainty reduction nearly 3 orders magnitude and demonstrate atomic quality factor $Q$ $\ensuremath{\sim}{10}^{14}$. The atoms are confined a vertical lattice trap light at newly determined magic wavelength $362.5697\ifmmode\pm\else\textpm\fi{}0.0011\text{ }\text{ }\mathrm{nm}$ depth $20{E}_{R}$. loaded from single-stage magneto-optical...
Abstract Lasers with high spectral purity can enable a diverse application space, including precision spectroscopy, coherent high‐speed communications, physical sensing, and manipulation of quantum systems. Already, meticulous design construction bench Fabry–Perot cavities has made possible dramatic achievements in active laser‐linewidth reduction, predominantly for optical‐atomic clocks. Yet, there is increasing demand miniaturized laser systems operating performance ambient environments....
Abstract Laser ignition (LI) allows for precise manipulation of timing and location is promising green combustion automobile rocket engines aero-turbines under lean-fuel conditions with improved emission efficiency; however, achieving completely effective reliable still a challenge. Here, we report the realization igniting lean methane/air mixture 100% success rate by an ultrashort femtosecond laser, which has long been regarded as unsuitable fuel source. We demonstrate that minimum energy...
Abstract Optical resonators are indispensable tools in optical metrology that usually benefit from an evacuated and highly-isolated environment to achieve peak performance. Even the more sophisticated design of Fabry-Perot (FP) cavities, material choice limits achievable quality factors. For this reason, monolithic emerging as promising alternative traditional designs, but their is still at preliminary stage far being optimized. Here, we demonstrate a FP resonator with 4.5 cm 3 volume 2 × 10...