A5072250400- Advanced Fiber Laser Technologies
- Photonic and Optical Devices
- Medieval Literature and History
- Laser-Matter Interactions and Applications
- Photonic Crystal and Fiber Optics
- Reformation and Early Modern Christianity
- Advanced Fiber Optic Sensors
- Spectroscopy and Laser Applications
- Mechanical and Optical Resonators
- Medieval European Literature and History
- Historical Studies of British Isles
- Optical Network Technologies
- Laser Design and Applications
- Photorefractive and Nonlinear Optics
- Advanced Frequency and Time Standards
- Medieval Iberian Studies
- Scottish History and National Identity
- Mass Spectrometry Techniques and Applications
- Linguistics and language evolution
- Semiconductor Lasers and Optical Devices
- Silicon and Solar Cell Technologies
- Semiconductor materials and devices
- Gyrotron and Vacuum Electronics Research
- Renaissance Literature and Culture
- Migration, Ethnicity, and Economy
National Institute of Standards and Technology
2009-2024
University of Ottawa
2007-2024
University of Colorado Boulder
2009-2024
Photonics (United States)
2022-2024
Physical Measurement Laboratory
2019-2022
National Institute of Standards
2018-2022
University of Washington
2020-2022
Advanced Neural Dynamics (United States)
2020
Columbia University
2012-2019
Augusta University
2019
We propose a new light source based on having alkaline-earth atoms in an optical lattice collectively emit photons ultranarrow clock transition into the mode of high $Q$ resonator. The resultant radiation has extremely narrow linewidth mHz range, even smaller than that itself due to collective effects. A power level order ${10}^{\ensuremath{-}12}\text{ }\text{ }\mathrm{W}$ is possible, sufficient for phase locking slave local oscillator. Realizing this potential improve stability best clocks...
We explore the dynamical response of dissipative Kerr solitons to changes in pump power and detuning show how thermal nonlinear processes couple these parameters frequency-comb degrees freedom. Our experiments are enabled by a Pound-Drever-Hall (PDH) stabilization approach that provides on-demand, radio-frequency control frequency comb. PDH locking not only guides Kerr-soliton formation from cold microresonator but opens path decouple repetition carrier-envelope-offset frequencies. In...
Integrated photonics plays a central role in modern science and technology, enabling experiments from nonlinear to quantum information, ultraprecise measurements sensing, advanced applications such as data communication signal processing. Optical materials with favorable properties are essential for nanofabrication of integrated devices. Here we describe material photonics, tantalum pentoxide ( <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow...
The use of optical interconnects has burgeoned as a promising technology that can address the limits data transfer for future high-performance silicon chips. Recent pushes to enhance communication have focused on developing wavelength-division multiplexing technology, and new dimensions will be paramount fulfill ever-growing need speed. Here we demonstrate an integrated multi-dimensional scheme combines wavelength- mode- photonic circuit. Using foundry-compatible inverse design spectrally...
Abstract Dielectric metasurfaces, composed of planar arrays subwavelength dielectric structures that collectively mimic the operation conventional bulk optical elements, have revolutionized field optics by their potential in constructing high-efficiency and multi-functional optoelectronic systems on chip. The performance a metasurface is largely determined its constituent material, which highly desired to high refractive index, low loss wide bandgap, at same time, be fabrication friendly....
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...
Using aluminum-nitride photonic-chip waveguides, we generate optical-frequency-comb supercontinuum spanning from 500 nm to 4000 with a 0.8 nJ seed pulse, and show that the spectrum can be tailored by changing waveguide geometry. Since aluminum nitride exhibits both quadratic cubic nonlinearities, spectra feature simultaneous contributions numerous nonlinear mechanisms: generation, difference-frequency second-harmonic third-harmonic generation. As one application of integrating multiple...
We utilize silicon-nitride waveguides to self-reference a telecom-wavelength fiber frequency comb through supercontinuum generation, using 11.3 mW of optical power incident on the chip. This is approximately 10 times lower than conventional approaches nonlinear fibers and enabled by low-loss (<2 dB) input coupling high nonlinearity silicon nitride, which can provide two octaves spectral broadening with energies only 110 pJ. Following self-referencing accomplished mixing 780-nm...
Dissipative solitons formed in Kerr microresonators may enable chip-scale frequency combs for precision optical metrology. Here we explore the creation of an octave-spanning, 15-GHz repetition-rate microcomb suitable both f-2f self-referencing and optical-frequency comparisons across near infrared. This is achieved through a simple reliable approach to deterministically generate, subsequently stabilize, soliton pulse trains silica-disk resonator. Efficient silicon-nitride waveguides provide...
Experiments demonstrate down-conversion of an optical clock signal to terahertz frequencies using a Kerr-microresonator frequency comb, technology that permits chip-scale, potentially cost-effective fabrication.
By-design access to laser wavelength, especially with integrated photonics, is critical advance quantum sensors, such as optical clocks and quantum-information systems, open opportunities in communication. Semiconductor-laser gain provides exemplary efficiency integration but merely developed wavelength bands. Alternatively, nonlinear optics requires control of phase matching, the principle conversion a pump designed extensible. We report on laser-wavelength by versatile customization...
We report and characterize low-temperature, plasma-deposited deuterated silicon nitride films for nonlinear integrated photonics. With a peak processing temperature less than 300°C, it is back-end compatible with complementary metal-oxide semiconductor substrates. achieve microresonators quality factor of up to 1.6×106 at 1552 nm >1.2×106 throughout λ=1510-1600 nm, without annealing or stress management (film thickness 920 nm). then demonstrate the immediate utility this platform in...
The discovery and characterization of exoplanets around nearby stars is driven by profound scientific questions about the uniqueness Earth our Solar System, conditions under which life could exist elsewhere in Galaxy. Doppler spectroscopy, or radial velocity (RV) technique, has been used extensively to identify hundreds exoplanets, but with notable challenges detecting terrestrial mass planets orbiting within habitable zones. We describe infrared RV spectroscopy at 10 m Hobby-Eberly...
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....
Visible wavelengths of light control the quantum matter atoms and molecules are foundational for technologies, including computers, sensors, clocks. The development visible integrated photonics opens possibility scalable circuits with complex functionalities, advancing both science technology frontiers. We experimentally demonstrate an inverse design approach based on superposition guided mode sources, allowing generation complete free-space radiation directly from within a single 150 nm...
Laser sources power extreme data transmission as well computing acceleration, access to ultrahigh-speed signaling, and sensing for chemicals, distance, pattern recognition. The ever-growing scale of these applications drives innovation in multi-wavelength lasers massively parallel processing. We report a nanophotonic Kerr-resonator circuit that consumes the an input laser generates soliton frequency comb at approaching unit efficiency. By coupling forward backward propagation, we realize...
Previous work has shown that use of a passive enhancement cavity designed for ultrashort pulses can enable the up-conversion fs frequency comb into extreme ultraviolet (XUV) spectral region utilizing highly nonlinear process high harmonic generation. This promising approach an efficient source coherent light in this difficult to reach promises be unique tool precision spectroscopy and temporally resolved measurements. Yet date, not been extensively utilized due part low powers so far...
Optical waveguides made from periodically poled materials provide high confinement of light and enable the generation new wavelengths via quasi-phase-matching, making them a key platform for nonlinear optics photonics. However, such devices are not typically employed high-harmonic generation. Here, using 200-fs, 10-nJ-level pulses 4100-nm at 1 MHz, we generate harmonics up to 13th harmonic (315 nm) in chirped, lithium niobate waveguide. Total conversion efficiencies into visible–ultraviolet...
Optical clocks combined with frequency combs are the future of precision timekeeping, as well a key enabling technology for applications in communication, navigation, relativistic geodesy, quantum physics, and fundamental measurements. Using silicon nitride waveguide to spectrally broaden telecom-frequency comb, authors perform an optical-clock comparison. Additionally, they present measurements analysis support ``all-in-one'' design next-generation clock network. Such devices will be very...
Microresonator frequency combs and their design versatility have revolutionized research areas from data communication to exoplanet searches. While microcombs in the 1550 nm band are well documented, there is interest using other bands. Here, we demonstrate formation spectral control of normal-dispersion dark soliton at 1064 nm. We generate 200 GHz repetition rate by inducing a photonic bandgap microresonator mode for pump laser with crystal. perform experiments microresonators made Ta2O5...