Photo-induced cascaded harmonic and comb generation in silicon nitride microresonators

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The faithful bidirectional quantum coherent conversion of microwave (5 GHz) and optical (193.5 THz) quantum states will become essential for future quantum networks. Due to their low transition frequency, qubit states are quickly destroyed at room temperat ...

The centrosymmetric structure of stoichiometric silicon nitride inhibits the realization of second-order nonlinear processes in this low-loss, complementary-metal-oxide-semiconductor fabrication-compatible platform. Nevertheless, linear electro-optic modul ...

On-chip coherent light generation has wide-ranging applications in metrology, spectroscopy, quantum optics, etc. In this study, we demonstrate the generation of coherent light from a silicon-nitride microring resonator using cascaded nonlinear processes. T ...

The invention of the laser in the 1960s heralded a new era in photonics. Owing to both, academic and industrial research, photonics technologies have long become part of our everyday life. This PhD thesis explores two subfields of laser technologies: Frequ ...

We demonstrate the linear electro-optic effect in a silicon nitride micro-ring in which an effective second order nonlinearity is enabled by optically assisted electrical poling. Charge carriers' separation in the waveguide creates a permanent electric-fie ...

Difference-frequency generation (DFG) is elemental for nonlinear parametric processes such as optical parametric oscillation and is instrumental for generating coherent light at long wavelengths, especially in the middle infrared. Second-order nonlinear fr ...

Low-loss photonic integrated circuits and microresonators have enabled a wide range of applications, such as narrow-linewidth lasers and chip-scale frequency combs. To translate these into a widespread technology, attaining ultralow optical losses with est ...

Multimode optical fibers are the backbone of telecommunication and medical imaging. When light with high intensity travels through a multimode fiber, photons and matter start to interact and propa-gation becomes nonlinear. The nonlinear propagation of ligh ...

A large amount of experimental and theoretical works deals with the second harmonic generation from different plasmonic geometries. Since they often consider relatively long optical pulses, many of these studies are focused on the investigation of a quasi- ...

The synthesis of ultralow-noise microwaves is of both scientific and technological relevance for timing, metrology, communications and radio-astronomy. Today, the lowest reported phase noise signals are obtained via optical frequency-division using mode-lo ...

Absorbing airborne noise at frequencies below 300 Hz is a particularly vexing problem due to the absence of natural sound absorbing materials at these frequencies. The prevailing solution for low-frequency sound absorption is the use of passive narrow-band ...

A distributed and dynamic strain sensing system based on frequency-scanning phase-sensitive optical time domain reflectometry is proposed and demonstrated. By utilizing an RF pulse scheme with a fast arbitrary waveform generator, a train of optical pulses ...

Microwave photonic technologies, which upshift the carrier into the optical domain, have facilitated the generation and processing of ultra-wideband electronic signals at vastly reduced fractional bandwidths. For microwave photonic applications such as rad ...

Photo-induced cascaded harmonic and comb generation in silicon nitride microresonators

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Towards microwave-to-optical quantum transduction with barium titanate/strontium titanate integrated photonics

Electric-field poling of a silicon nitride microring resonator for linear electro-optic modulation

UV, visible and near-infrared light generation through cascaded nonlinear processes in silicon-nitride microring resonators pumped at telecom wavelength

Thulium-doped fiber cavities for frequency comb generation at 2 micron

Optically assisted electrical poling of silicon nitride integrated resonators

Difference-frequency generation in optically poled silicon nitride waveguides

High-yield, wafer-scale fabrication of ultralow-loss, dispersion-engineered silicon nitride photonic circuits

Exploring nonlinearities in multimode optical fibers for lasers and computing

Modes interplay controls the second harmonic generation dynamics of plasmonic nanostructures

Ultralow-noise photonic microwave synthesis using a soliton microcomb-based transfer oscillator

Improving sound absorption through nonlinear active electroacoustic resonators

Distributed and dynamic strain sensing with high spatial resolution and large measurable strain range

Photonic microwave generation in the X- and K-band using integrated soliton microcombs