444 citations · 1.2k across the 13 of their papers we have counts for
13 papers
Chip-based f-2f interferometry in periodically tapered lithium niobate nanophotonic waveguides
Xinyan Chi, Ruoao Yang, Zhiyuan Li +4
Nanophotonic supercontinuum generation offers a practical route to chip-based f-2f interferometry by leveraging coexisting chi(2) and chi(3) nonlinearities. In conventional uniform…
Efficient and tunable blue light generation using lithium niobate nonlinear photonics
Ayed Al Sayem, Yubo Wang, Juanjuan Lu +3
Thin film lithium niobate (LN) has recently emerged as a playground for chip-scale nonlinear optics and leads to highly efficient frequency conversions from near infrared to near-v…
III-Nitride nanophotonics for beyond-octave soliton generation and self-referencing
Xianwen Liu, Zheng Gong, Alexander W. Bruch +3
Frequency microcombs, successors to mode-locked laser and fiber combs, enable miniature rulers of light for applications including precision metrology, molecular fingerprinting, an…
Ground-state Pulsed Cavity Electro-optics for Microwave-to-optical Conversion
Wei Fu, Mingrui Xu, Xianwen Liu +9
In the development of quantum microwave-to-optical (MO) converters, excessive noise induced by the parametric optical drive remains a major challenge at milli-Kelvin temperatures.…
Photonic dissipation control for Kerr soliton generation in strongly Raman-active media
Zheng Gong, Ming Li, Xianwen Liu +6
Microcavity solitons enable miniaturized coherent frequency comb sources. However, the formation of microcavity solitons can be disrupted by stimulated Raman scattering (SRS), part…
Pockels Soliton Microcomb
Alexander W. Bruch, Xianwen Liu, Zheng Gong +4
Kerr soliton microcombs have recently emerged as a prominent topic in integrated photonics and enabled new horizons for optical frequency metrology. Kerr soliton microcombs, as its…
Periodically poled thin film lithium niobate microring resonators with a second-harmonic generation efficiency of 250,000%/W
Juanjuan Lu, Joshua B. Surya, Xianwen Liu +4
Lithium niobate (LN), dubbed by many as the silicon of photonics, has recently risen to the forefront of chip-scale nonlinear optics research since its demonstration as an ultralow…
On-chip microring optical parametric oscillator
Alexander W. Bruch, Xianwen Liu, Joshua B. Surya +2
Optical parametric oscillators (OPOs) have been widely used for decades as tunable, narrow linewidth, and coherent light sources for reaching long wavelengths and are attractive fo…
Beyond 100 THz-spanning ultraviolet frequency combs in a non-centrosymmetric crystalline waveguide
Xianwen Liu, Alexander W. Bruch, Juanjuan Lu +6
Ultraviolet frequency combs enable applications ranging from precision spectroscopy to atomic clocks by addressing the electronic transitions of atoms and molecules. Access to ultr…
Ultra-high-Q UV microring resonators based on single-crystalline AlN platform
Xianwen Liu, Alexander W. Bruch, Zheng Gong +6
Development of low-loss photonic components in the ultraviolet (UV) band will open new prospects for classical and quantum optics. Compared with other integrated platforms, aluminu…
17,000 %/W Second Harmonic Conversion Efficiency in Single Crystalline Aluminum Nitride Microresonators
Alexander W. Bruch, Xianwen Liu, Xiang Guo +6
High quality factor optical microcavities have been employed in a variety of material systems to enhance nonlinear optical interactions. While single-crystalline aluminum nitride m…
Broadband frequency comb generation in aluminum nitride-on-sapphire microresonators
Xianwen Liu, Changzheng Sun, Bing Xiong +10
Development of chip-scale optical frequency comb with the coverage from ultra-violet (UV) to mid-infrared (MIR) wavelength is of great significance. To expand the comb spectrum int…
Continuous-wave Raman Lasing in Aluminum Nitride Microresonators
Xianwen Liu, Changzheng Sun, Bing Xiong +10
We report the first investigation on continuous-wave Raman lasing in high-quality-factor aluminum nitride (AlN) microring resonators. Although wurtzite AlN is known to exhibit six…