A5057791146- Advanced Fiber Laser Technologies
- Photonic and Optical Devices
- Photorefractive and Nonlinear Optics
- Laser-Matter Interactions and Applications
- Quantum, superfluid, helium dynamics
- Spectroscopy and Quantum Chemical Studies
- Mechanical and Optical Resonators
- Mass Spectrometry Techniques and Applications
- Spectroscopy and Laser Applications
- Solid State Laser Technologies
- Photonic Crystal and Fiber Optics
Stanford University
2024
University of Cambridge
2022
Mid-infrared spectroscopy, an important technique for sensing molecules, has encountered barriers from sources either limited in tuning range or excessively bulky widespread use. We present a compact, efficient, and broadly tunable optical parametric oscillator surmounting these challenges. Leveraging dispersion-engineered thin-film lithium niobate-on-sapphire photonics singly resonant cavity allows broad, controlled over octave 1.5–3.3 µm. The device generates >25mW of mid-infrared light...
Quantum optical technologies promise advances in sensing, computing, and communication. A key resource is squeezed light, where quantum noise redistributed between quadratures. We introduce a monolithic, chip-scale platform that exploits the χ
We demonstrate a thin film lithium niobate electro-optic modulator operating at 456 nm with an RF voltage-length product of 0.38 V-cm and bandwidth 6.9 GHz. test the dielectric relaxation sweeps temperature optical input power, compare equivalent modulators electrode materials Cr-Au, Ti-Au Al in terms bias stability current-voltage characteristics. over least 8 hours devices, show relationships between drift, I-V characteristics ferroelectric domain switching.
Optical parametric amplification is one of the most flexible approaches for generating coherent light at long wavelengths, but typical implementations require prohibitively large pump pulse energies to realize useful amounts gain. In this work, we experimentally demonstrate an approach optical in which interplay between gain and symmetric temporal walk-off confines non-degenerate signal idler form a three-wave soliton. Gain-trapped solitons propagate stably over arbitrarily interaction...
We demonstrate ultraviolet-to-mid-infrared supercontinuum generation (SCG) inside thin-film lithium niobate (TFLN) on sapphire nanowaveguides. This platform combines wavelength-scale confinement and quasi-phasematched nonlinear interactions with a broad transparency window extending from 350 to 4500 nm. Our approach relies group-velocity-matched second-harmonic generation, which uses an interplay between saturation small phase-mismatch generate spectrally broadened fundamental second...
We present progress on advancing nanophotonic optical parametric oscillators for low-power and broadband mid-infrared spectroscopy.
Nanoconfined few-molecule water clusters are invaluable systems to study fundamental aspects of hydrogen bonding. Unfortunately, most experiments on must be performed at cryogenic temperatures. Probing in noncryogenic is however crucial understand the behavior confined atmospheric or biological settings, but such usually require either complex synthesis and/or introduce many confounding external bonds clusters. Here, we show that combining Raman spectroscopy with molecular nanocapsule...