9 papers
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…
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…