72 citations · 119 across the 14 of their papers we have counts for
13 papers · 1 filter
Toward nanophotonic platforms for solid-state Th nuclear clocks
Sandro Kraemer, Karen Mamian, Toby Bi +18
While the Th nuclear isomer has recently been observed and laser-excited, converting optical nuclear manipulation into a chip-scale solid-state frequency standard remains a…
Fourth-harmonic UV light generation in integrated silicon nitride microresonators
Alekhya Ghosh, Arghadeep Pal, Haochen Yan +6
Integrated silicon nitride (Si3N4) resonators have emerged as a leading platform for nonlinear photonics, yet generating light at wavelength in the ultraviolet (UV) has remained el…
Visible octave frequency combs in silicon nitride nanophotonic waveguides driven by Ti:sapphire lasers
Abdullah Alabbadi, Ewan Allan, Hanna Ostapenko +3
Nonlinear nanophotonic waveguides have opened a route to compact frequency combs for precision metrology, spectroscopy and astronomy, yet broadband comb access to the visible remai…
Color symmetry breaking in a nonlinear optical microcavity
Luca O. Trinchão, Alekhya Ghosh, Arghadeep Pal +8
Spontaneous symmetry breaking leads to diverse phenomena across the natural sciences, from the Higgs mechanism in particle physics to superconductors and collective animal behavior…
Inverse-Designed Silicon Nitride Nanophotonics
Toby Bi, Shuangyou Zhang, Egemen Bostan +12
Silicon nitride photonics has enabled integration of a variety of components for applications in linear and nonlinear optics, including telecommunications, optical clocks, astrocom…
Exceptional, but Separate: Precursors to Spontaneous Symmetry Breaking
Lewis Hill, Julius T. Gohsrich, Alekhya Ghosh +3
Spontaneous symmetry breaking (SSB) and exceptional points (EPs) are often assumed to be inherently linked. Here we investigate the intricate relationship between SSB and specific…
Hybrid Nonlinear Effects in Photonic Integrated Circuits
Arghadeep Pal, Alekhya Ghosh, Shuangyou Zhang +5
Nonlinear optics in photonic integrated circuits is usually limited to utilizing the nonlinearity of a single material. In this work, we demonstrate the use of hybrid optical nonli…
Polarization faticons: Chiral localized structures in self-defocusing Kerr resonators
Erwan Lucas, Gang Xu, Pengxiang Wang +9
We report on numerical predictions and experimental observations of a novel type of temporal localized dissipative structures that manifest themselves in the self-defocusing regime…
Phase Symmetry Breaking of Counterpropagating Light in Microresonators for Switches and Logic Gates
Alekhya Ghosh, Arghadeep Pal, Shuangyou Zhang +3
The rapidly growing field of integrated photonics is enabling a large number of novel devices for optical data processing, neuromorphic computing and circuits for quantum photonics…
Controlled light distribution with coupled microresonator chains via Kerr symmetry breaking
Alekhya Ghosh, Arghadeep Pal, Lewis Hill +7
Within optical microresonators, the Kerr interaction of photons can lead to symmetry breaking of optical modes. In a ring resonator, this leads to the interesting effect that light…
Microresonator soliton frequency combs via cascaded Brillouin scattering
Hao Zhang, Shuangyou Zhang, Toby Bi +7
We demonstrate Kerr soliton frequency comb generation that is seeded by a cascaded Brillouin scattering process. In this process, a pump laser is used to generate multiple orders o…
Femtosecond pulse amplification on a chip
Mahmoud A. Gaafar, Markus Ludwig, Kai Wang +13
Femtosecond laser pulses enable the synthesis of light across the electromagnetic spectrum and provide access to ultrafast phenomena in physics, biology, and chemistry. Chip-integr…
Radiation pressure driven vibrational modes in ultra-high-Q silica microspheres
R. Ma, A. Schliesser, P. Del'Haye +2
Quantitative measurements of the vibrational eigenmodes in ultra-high-Q silica microspheres are reported. The modes are efficiently excited via radiation-pressure induced dynamical…