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Backward-Wave Difference-Frequency Generation in Thin-Film Lithium Niobate
Yesim Koyaz, Ozan Yakar, Furkan Ayhan +3
Second-order nonlinear processes involving counter-propagating light generation have been explored for quantum applications and optical parametric oscillators. However, realizing t…
Enhancing broadband second harmonic generation in a thin film lithium niobate racetrack resonator with tunable-coupling
Olivia Hefti, Jean-Etienne Tremblay, Andrea Volpini +7
Second harmonic generation in thin film periodically poled lithium niobate (PPLN) is constrained by an efficiency-bandwidth trade-off and fabrication-sensitive scaling. We demonstr…
Thermo-optic dynamics of effective epsilon-near-zero media
Jiaye Wu, Xuanyi Liu, Marco Clementi +4
Epsilon-near-zero (ENZ) photonic media exhibit extreme optical dispersion that enables unconventional light-matter interactions and enhanced optical nonlinearities. Recent studies…
Reconfigurable Resonant Multimode Nonlinear Coupling for UV-to-infrared Frequency Generation
Samantha Sbarra, Ji Zhou, Boris Zabelich +6
On-chip coherent visible and near-infrared (NIR) light generation has broad applications in metrology, bio-sensing, and quantum information. High-Q microresonators are ideal candid…
Three-Octave Supercontinuum Generation in Thick Crystalline Aluminum Nitride Waveguides
Samantha Sbarra, Samuele Brunetta, Pierre Arnaud Demongodin +4
We report an efficient extension of supercontinuum generation through dispersion engineering of crystalline aluminum nitride (AlN)-on-sapphire waveguides. Using a tailored epitaxia…
Sputtered AlN buffer layer for low-loss crystalline AlN-on-sapphire integrated photonics
Samuele Brunetta, Samantha Sbarra, Brandon Shuen Yi Loke +4
In recent years, aluminum nitride (AlN) has emerged as an attractive material for integrated photonics due to its low propagation losses, wide transparency window, and presence of…
Broadband spectral mapping of photo-induced second-harmonic generation in silicon nitride microresonators
Ji Zhou, Marco Clementi, Samantha Sbarra +2
By employing a pump-probe technique for enhanced spectral mapping of the dynamics in nonlinear frequency conversion, we demonstrate that photo-induced second-harmonic generation (S…