A5058853254- Photonic and Optical Devices
- Advanced Fiber Laser Technologies
- Mechanical and Optical Resonators
- Advanced Fiber Optic Sensors
- Advanced Photonic Communication Systems
- Laser Design and Applications
- Magneto-Optical Properties and Applications
- Advanced MEMS and NEMS Technologies
- Semiconductor Quantum Structures and Devices
- Quantum and electron transport phenomena
- Neural Networks and Reservoir Computing
- Optical Network Technologies
- Solid State Laser Technologies
- GaN-based semiconductor devices and materials
- Semiconductor materials and interfaces
- Geophysics and Sensor Technology
- Precipitation Measurement and Analysis
- Force Microscopy Techniques and Applications
- Electron and X-Ray Spectroscopy Techniques
- Spectroscopy and Quantum Chemical Studies
- Radio Wave Propagation Studies
- Optical Coherence Tomography Applications
- Photoacoustic and Ultrasonic Imaging
- Microwave and Dielectric Measurement Techniques
- Magnetic properties of thin films
Jet Propulsion Laboratory
2020-2025
California Institute of Technology
2023
Yale University
2015-2022
Santa Clara University
2013
Brillouin laser oscillators offer powerful and flexible dynamics as the basis for mode-locked lasers, microwave oscillators, optical gyroscopes in a variety of systems. However, interactions are exceedingly weak conventional silicon photonic waveguides, stifling progress towards silicon-based lasers. The recent advent hybrid photonic-phononic waveguides has revealed to be one strongest most tailorable nonlinearities silicon. Here, we harness these engineered demonstrate lasing Moreover, show...
Brillouin nonlinearities-which result from coupling between photons and acoustic phonons-are exceedingly weak in conventional nanophotonic silicon waveguides. Only recently have interactions been transformed into the strongest most tailorable nonlinear using a new class of optomechanical waveguides that control both light sound. In this paper, we use multi-mode waveguide to create stimulated scattering light-fields guided distinct spatial modes an integrated for first time. This interaction,...
Abstract Microwave photonics offers transformative capabilities for ultra-wideband electronic signal processing and frequency synthesis with record-low phase noise levels. Despite the intrinsic bandwidth of optical systems operating at ~200 THz carrier frequencies, many schemes high-performance photonics-based microwave generation lack broadband tunability, experience tradeoffs between level, complexity, frequency. An alternative approach uses direct down-mixing two tunable semiconductor...
The creation of high-performance narrowband filters is great interest for many RF-signal processing applications. To this end, numerous schemes electronic, MEMS-based, and microwave photonic have been demonstrated. Filtering based on systems offer superior flexibility tunability to traditional RF filters. However, these optical-based are typically limited GHz-widths often large insertion losses, posing challenges integration into high-fidelity radiofrequency circuits. In article, we...
The ability to amplify light within silicon waveguides is central the development of highperformance photonic device technologies.To this end, large optical nonlinearities made possible through stimulated Brillouin scattering offer a promising avenue for power-efficient allsilicon amplifiers, with recent demonstrations producing several dB net amplification.However, scaling degree amplification technologically compelling levels (> 10 dB), necessary everything from filtering small signal...
Optical nonreciprocity plays a key role in almost every optical system, directing light flow and protecting components from backscattered light. Controllable forms of on-chip are needed for the robust operation increasingly sophisticated photonic integrated circuits (PICs) context classical quantum computation, networking, communications, sensing. However, it has been challenging to achieve wideband, low-loss on-chip. In this paper, we demonstrate strong coupling Rabi-like energy exchange...
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...
Researchers demonstrate optical control of macroscopic, high-frequency acoustic waves for classical and quantum applications.
The ever-increasing demand for high speed and large bandwidth has made photonic systems a leading candidate the next generation of telecommunication radar technologies. platform enables performance while maintaining small footprint provides natural interface with fiber optics signal transmission. However, producing sharp, narrow-band filters that are competitive RF components remained challenging. In this paper, we demonstrate all-silicon RF-photonic multi-pole ∼100× higher spectral...
Most of the energy exchange in atmosphere occurs atmospheric boundary layer (ABL) with respect to solar heating and evaporation. Remote sensing ABL from space is challenging because its proximity surface potential sharp gradients air properties. Passive microwave instruments can be a critical component observing system since they provide thermodynamic information both cloudy clear air, including cloud precipitation properties, flux such as temperature wind speed. However, conventional...
Optomechanical systems show great potential as quantum transducers and information storage devices for use in future hybrid networks. In this context, optomechanical strong coupling can enable efficient, high-bandwidth, deterministic transfer of states. While has been realized at optical frequencies, it proven difficult to identify a robust system that features the low loss high rates required more sophisticated control mechanical motion. paper, we demonstrate Brillouin-based bulk cavity...
We quantify the strength of stimulated forward Brillouin scattering in hollow-core photonic bandgap fiber through a combination experiments and multi-physics simulations. spectroscopy methods reveal family densely spaced Brillouin-active phonon modes below 100 MHz with coupling strengths that approach those conventional silica fiber. The experimental results are corroborated by simulations, revealing relatively strong optomechanical is mediated electrostriction radiation pressure within...
Radiation-pressure-induced optomechanical coupling permits exquisite control of micro- and mesoscopic mechanical oscillators. This ability to manipulate even damp motion with light—a process known as dynamical backaction cooling—has become the basis for a range novel phenomena within burgeoning field cavity optomechanics, spanning from dissipation engineering quantum-state preparation. As this moves toward more complex systems dynamics, there has been growing interest in prospect cooling...
Abstract In most practical scenarios, optical susceptibilities can be treated as a local property of medium. For example, in the context nonlinear optics we typically treat Kerr and Raman response local, such that fields at one location do not produce distinct locations space. This is because electronic vibrational disturbances produced within material are confined to region smaller than an wavelength. By comparison, Brillouin interactions, mediated by traveling-wave acoustic phonons, result...
$I\phantom{\rule{0}{0ex}}n\phantom{\rule{0}{0ex}}j\phantom{\rule{0}{0ex}}e\phantom{\rule{0}{0ex}}c\phantom{\rule{0}{0ex}}t\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}o\phantom{\rule{0}{0ex}}n$ $l\phantom{\rule{0}{0ex}}o\phantom{\rule{0}{0ex}}c\phantom{\rule{0}{0ex}}k\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}n\phantom{\rule{0}{0ex}}g$ is a simple yet powerful means to stabilize and control laser oscillators, with many applications, but in the context of integrated photonics technique...
Microwave photonic systems are compelling for their ability to process signals at high frequencies and over extremely wide bandwidths as a basis next generation communication radar technologies. However, many applications also require narrow-band $(\sim\text{MHz})$ filtering operations that challenging implement using optical techniques, this requires reliable integration of ultra-high quality factor $(\sim 10^8)$ resonators. One way address challenge is utilize long-lived acoustic...
The synthesis of ultra-long lived acoustic phonons in a variety materials and device geometries could enable range new coherent information processing sensing technologies; many forms phonon dissipation pose barrier to this goal. We explore linear nonlinear contributions silica at cryogenic temperatures using fiber-optic structures that tightly confine both photons the core. When immersed helium, fiber system supports nearly perfect guidance 9 GHz phonons; strong electrostrictively mediated...
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation C. P. Weber, Eric A. Kittlaus, Kassandra B. Mattia, Christopher J. Waight, Hagmann, X. Liu, M. Dobrowolska, K. Furdyna; Rapid diffusion of electrons in GaMnAs. Appl. Phys. Lett. 6 May 2013; 102 (18): 182402. https://doi.org/10.1063/1.4804578 Download citation file: Ris (Zotero) Reference Manager EasyBib...
We report non-reciprocal optical modulation and mode conversion mediated by an optically-driven acoustic wave. Through this process, we experimentally demonstrate >20 dB of nonreciprocity over a >1 nm bandwidth in integrated silicon waveguide.