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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…