334 citations · 846 across the 14 of their papers we have counts for
14 papers
Integrated Backward Second-Harmonic Generation Through Optically Induced Quasi-Phase Matching
Ozan Yakar, Edgars Nitiss, Jianqi Hu +1
Quasi-phase-matching for efficient backward second-harmonic generation (BSHG) requires sub-m poling periods, a non-trivial fabrication feat. For the first time, we report int…
Observation of SQUID-like behavior in fiber laser with intra-cavity epsilon-near-zero effect
Jiaye Wu, Xuanyi Liu, Boris A. Malomed +10
Establishing relations between fundamental effects in far-flung areas of physics is a subject of great interest in the current research. We here report realization of a novel photo…
Single-shot Kramers-Kronig complex orbital angular momentum spectrum retrieval
Zhongzheng Lin, Jianqi Hu, Yujie Chen +2
Orbital angular momentum (OAM) spectrum diagnosis is a fundamental building block for diverse OAM-based systems. Among others, the simple on-axis interferometric measurement can re…
Photo-induced cascaded harmonic and comb generation in silicon nitride microresonators
Jianqi Hu, Edgars Nitiss, Jijun He +5
Silicon nitride (SiN) is an ever-maturing integrated platform for nonlinear optics. Yet, due to the absence of second-order () nonlinearity, SiN is mostly…
Coherent Photogalvanic Effect for Second-Order Nonlinear Photonics
Ozan Yakar, Edgars Nitiss, Jianqi Hu +1
The coherent photogalvanic effect leads to the generation of a current under the absorption interference of coherent beams and allows for the inscription of space-charge gratings l…
Near perfect two-photon interference out a down-converter on a silicon photonic chip
Romain Dalidet, Florent Mazeas, Edgars Nitiss +5
Integrated entangled photon-pair sources are key elements for enabling large-scale quantum photonic solutions, and addresses the challenges of both scaling-up and stability. Here w…
Optically reconfigurable quasi-phase-matching in silicon nitride microresonators
Edgars Nitiss, Jianqi Hu, Anton Stroganov +1
Bringing efficient second-order nonlinear effects in integrated photonics is an important task motivated by the prospect of enabling all possible optical functionalities on chip. S…
Reconfigurable radiofrequency filters based on versatile soliton microcombs
Jianqi Hu, Jijun He, Junqiu Liu +5
The rapidly maturing integrated Kerr microcombs show significant potential for microwave photonics. Yet, state-of-the-art microcomb based radiofrequency (RF) filters have required…
Nanophotonic supercontinuum based mid-infrared dual-comb spectroscopy
Hairun Guo, Wenle Weng, Junqiu Liu +6
High resolution and fast detection of molecular vibrational absorption is important for organic synthesis, pharmaceutical process and environmental monitoring, and is enabled by mi…
A nonreciprocal optical resonator with broken time-invariance for arbitrarily high time-bandwidth performance
Ivan Cardea, Davide Grassani, Simon J. Fabbri +6
Most present-day resonant systems, throughout physics and engineering, are characterized by a strict time-reversal symmetry between the rates of energy coupled in and out of the sy…
Highly efficient 4 micron light generation through fs-fiber laser driven supercontinuum in SiN waveguides
Davide Grassani, Eirini Tagkoudi, Hairun Guo +3
Directly accessing the middle infrared, the molecular functional group spectral region, via supercontinuum generation processes based on turn-key fiber lasers offers the undeniable…
Mid-infrared frequency comb generation with silicon nitride nano-photonic waveguides
Clemens Herkommer, Adrien Billat, Hairun Guo +5
Mid-infrared optical frequency combs are of significant interest for molecular spectroscopy due to the large absorption of molecular vibrational modes on one hand, and the ability…
Large second harmonic generation enhancement in SiN waveguides by all-optically induced quasi phase matching
Adrien Billat, Davide Grassani, Martin H. P. Pfeiffer +3
Integrated waveguides exhibiting efficient second-order nonlinearities are crucial to obtain compact and low power optical signal processing devices. Silicon nitride (SiN) has show…
Mid-infrared continuous wave parametric amplification in tapered chalcogenide microstructured fibers
Sida Xing, Davide Grassani, Svyatoslav Kharitonov +4
As photon mixing is not inherently limited to any specific spectral region, parametric processes represent a compelling solution for all-optical signal processing in spectral windo…