A5036748009- Photonic and Optical Devices
- Plasmonic and Surface Plasmon Research
- Advanced Fiber Optic Sensors
- Optical Network Technologies
- Advanced Photonic Communication Systems
- Advanced Fiber Laser Technologies
- Semiconductor Lasers and Optical Devices
- Photonic Crystals and Applications
- Optical Coatings and Gratings
- Laser-Matter Interactions and Applications
- Perovskite Materials and Applications
- Laser-Plasma Interactions and Diagnostics
- 2D Materials and Applications
- Nanowire Synthesis and Applications
- Neural Networks and Reservoir Computing
- Laser-induced spectroscopy and plasma
- Semiconductor Quantum Structures and Devices
- High-pressure geophysics and materials
- Mechanical and Optical Resonators
- Advancements in Photolithography Techniques
- Nanofabrication and Lithography Techniques
- Surfactants and Colloidal Systems
- Graphene research and applications
- Pickering emulsions and particle stabilization
- Proteins in Food Systems
AMO (Germany)
2014-2023
University of Duisburg-Essen
2023
Heinrich Heine University Düsseldorf
2013-2019
Laboratoire Interdisciplinaire Carnot de Bourgogne
2019
Université de Bourgogne
2019
Centre National de la Recherche Scientifique
2019
Queen's University Belfast
2016
Abstract Cesium lead halide perovskites are of interest for light‐emitting diodes and lasers. So far, thin‐films CsPbX 3 have typically afforded very low photoluminescence quantum yields (PL‐QY < 20%) amplified spontaneous emission (ASE) only at cryogenic temperatures, as defect related nonradiative recombination dominated room temperature (RT). There is a current belief that, efficient light from RT, the charge carriers/excitons need to be confined on nanometer scale, like in...
Optical data links are the backbone of today's telecommunication infrastructure. The integration electronic and optic components on one chip is most attractive routes to further increase system performance. Here, we present fabrication photodetectors based CVD-grown graphene silicon photonic waveguides. devices operate bias-free in C-band at 1550 nm show an extrinsic −3 dB bandwidth 41 GHz. We demonstrate that these detectors work rates up 50 GBit/s with excellent signal integrity.
Silicon photonics offers tremendous potential for inexpensive high-yield photonic-electronic integration. Besides conventional dielectric waveguides, plasmonic structures can also be efficiently realized on the silicon photonic platform, reducing device footprint by more than an order of magnitude. However, neither nor metals exhibit appreciable second-order optical nonlinearities, thereby making efficient electro-optic modulators challenging to realize. These deficiencies overcome concepts...
Offering open-access silicon photonics-based technologies has played a pivotal role in unleashing this technology from research laboratories to industry. Fabless enterprises rely on the of these for their product development. In last decade, diverse set with medium and high readiness levels have emerged. This paper provides review nitride photonic IC offered by pilot lines European institutes companies. The also highlights upcoming features platforms discusses how they address long-term market needs.
Metal-halide perovskites are promising lasing materials for realization of monolithically integrated laser sources, the key components silicon photonic circuits (PICs). Perovskites can be deposited from solution and require only low temperature processing leading to significant cost reduction enabling new PIC architectures compared state-of-the-art lasers realized through costly inefficient hybrid integration III-V semiconductors. Until now however, due chemical sensitivity perovskites, no...
Abstract Graphene has been considered as a promising material for opto-electronic devices, because of its tunable and wideband optical properties. In this work, we demonstrate electro-refractive phase modulation in graphene at wavelengths from 1530 to 1570 nm. By integrating gated layer silicon-waveguide based Mach-Zehnder interferometer, the key parameters modulator like change effective refractive index, insertion loss absorption are extracted. These experimentally obtained values well...
Metal-halide perovskites are a class of solution processed materials with remarkable optoelectronic properties such as high photoluminescence quantum yields and long carrier lifetimes, which makes them promising for wide range efficient photonic devices. In this work, we demonstrate the first successful integration perovskite laser onto silicon nitride chip. High throughput, low cost optical lithography is used, followed by indirect structuring waveguide. We embed methylammonium lead...
Thermo-optical tuning of the refractive index is one pivotal operations performed in integrated silicon photonic circuits for thermal stabilization, compensation fabrication tolerances, and implementation operations. Currently, heaters based on metal wires provide temperature control waveguide. The strong interaction light, however, necessitates a certain gap between heater structure to avoid significant transmission loss. Here we present graphene that overcomes this constraint enables an...
Low-cost, easily integrable photodetectors (PDs) for silicon (Si) photonics are still a bottleneck photonic-integrated circuits (PICs), especially wavelengths above 1.8 μm. Multilayered platinum diselenide (PtSe2) is semi-metallic two-dimensional (2D) material that can be synthesized below 450 °C. We integrate PtSe2-based PDs directly by conformal growth on Si waveguides. The operate at 1550 nm wavelength with maximum responsivity of 11 mA/W and response times 8.4 μs. Fourier-transform IR...
Integrated silicon nitride waveguides of 100 nm height can achieve ultralow propagation losses below 0.1 dB/cm at the 1550 wavelength band but lack scattering strength to form efficient grating couplers. An enhanced coupler design based on an amorphous layer top is proposed and demonstrated improve directionality coupler. The fabrication process optimized for a self-alignment between layers without increasing waveguide losses. Experimental coupling 5 dB 3 bandwidth 75 are achieved with both...
The first experimental evidence of the higher-order harmonic radiation generated by periodically modulated targets (gratings) irradiated relativistic, ultrashort ($<30\text{ }\text{ }\mathrm{fs}$), high intensity [$I{\ensuremath{\lambda}}^{2}={10}^{20}\text{ }(\mathrm{W}/{\mathrm{cm}}^{2})\text{ }\ensuremath{\mu}{\mathrm{m}}^{2}$] laser pulse is presented. interference effects on grating surface lead to emission harmonics up 45th order along target when beam focused onto a close normal...
Abstract Co-integrating CMOS plasmonics and photonics became the “sweet spot” to hit in order combine their benefits allow for volume manufacturing of plasmo-photonic integrated circuits. Plasmonics can naturally interface with electronics while offering strong mode confinement, enabling this way on-chip data interconnects when tailored single-mode waveguides, as well high-sensitivity biosensors exposing Surface-Plasmon-Polariton (SPP) modes aqueous environment. Their synergy low-loss...
Abstract 2D materials display very promising intrinsic material properties, with multiple applications in electronics, photonics, and sensing. In particular layered platinum diselenide has shown high potential due to its layer‐dependent tunable bandgap, low‐temperature growth, environmental stability. Here, the conformal area selective (AS) growth of PtSe 2 is presented defining a new paradigm for integration. The thermally‐assisted conversion which deposited by AS atomic layer deposition...
The unique behavior of colloids at liquid interfaces provides exciting opportunities for engineering the assembly colloidal particles into functional materials. deformable nature fluid-fluid means that we can use interfacial curvature, in addition to particle properties, direct self-assembly. To this end, a finite element method (Surface Evolver) study self-assembly rod-shaped adsorbed simple curved interface formed by sessile drop with cylindrical geometry. Specifically, single and multiple...
Dielectric loaded surface plasmon waveguides (DLSPPWs) comprised of polymer ridges deposited on top CMOS compatible metal thin films are investigated at telecom wavelengths. We perform a direct comparison the properties copper (Cu), aluminum (Al), titanium nitride (TiN) and gold (Au) based by implementing same plasmonic waveguiding configuration for each metal. The DLSPPWs characterized leakage radiation microscopy fiber-to-fiber mimicking cut-back method. introduce ohmic loss rate (OLR) to...
We present a new optical biosensing integration approach with multifunctional capabilities using plasmonic and photonic components on the same chip methodology to design interferometric biosensors exhibiting record high sensitivity enhanced resolution relying planar surface plasmon polariton (SPP) waveguide. First, we use this demonstrate proof of concept integrated plasmo-photonic liquid refractive index sensor based silicon nitride (Si3N4) Mach–Zehnder Interferometer (MZI). A 70 μm long,...
We demonstrate a silicon-organic hybrid (SOH) Mach-Zehnder modulator (MZM) generating four-level amplitude shift keying (4ASK) signals at symbol rates of up to 64 GBd both room temperature and an elevated 80°C. The measured line rate 128 Gbit/s corresponds the highest value demonstrated for silicon-based MZM so far. report bit error ratios 10-10 (64 BPSK), 10-5 (36 4ASK), 4 × 10-3 4ASK) temperature. At 80 °C, respective are 10-10, 10-4, 1.3 10-2. high-temperature experiments were performed...
With the latest configuration, Ti:Sa laser system ARCTURUS (Düsseldorf University, Germany) operates with a double-chirped pulse amplification (CPA) architecture delivering pulses an energy of 7 J before compression in each two high-power beams. By implementation plasma mirror system, intrinsic contrast is enhanced up to $10^{-12}$ on time scale hundreds picoseconds, main peak. The has been used various configurations for advanced experiments and different studies have carried out employing...
A novel layout for a reflective Arrayed Waveguide Grating is presented in this paper.The device consists of one half regular AWG where each arm waveguide the array terminated with phase shifter and Sagnac loop reflector.The theoretical model to describe design spectral response derivated.By individually adjusting reflectivity arm, allows tailoring AWG.Design cases Siliconon-Insulator devices Gaussian flattened are provided.
We demonstrate wavelength-division-multiplexed (WDM) 200 Gb/s (8 × 25 Gb/s) data transmission over 100 μm long aluminum (Al) surface-plasmon-polariton (SPP) waveguides on a Si3N4 waveguide platform at telecom wavelengths. The Al SPP was evaluated in terms of signal integrity by performing bit-error-rate (BER) measurements that revealed error-free operation for all eight non-return-to-zero (NRZ) modulated channels with power penalties not exceeding 0.2 dB 10-9. To the best our knowledge, this...
As part of the ultrafast charge dynamics initiated by high intensity laser irradiations solid targets, amplitude EM pulses propagate away from interaction point and are transported along any stalks wires attached to target. The propagation these a thin wire connected irradiated target was diagnosed via proton radiography technique, measuring pulse duration ∼20 ps velocity close speed light. strong electric field associated with can be exploited for controlling dynamically beams produced...
We demonstrate a photonic integrated Mach-Zehnder interferometric sensor, utilizing plasmonic stripe waveguide in the sensing branch and variable optical attenuator phase shifter reference arm to optimize interferometer operation. The sensor is used detect changes refractive index of surrounding medium exploiting accumulated change propagating Surface-Plasmon-Polariton (SPP) mode that fully exposed an aqueous buffer solution. attenuation stage incorporated Si3N4 branch, as means...
We demonstrate the design, fabrication, and experimental characterization of gold-based plasmonic stripes butt-coupled with low-pressure-chemical-vapor-deposition (LPCVD)-based Si <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> N xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> waveguides for excitation surface-plasmon-polariton (SPP) modes in aqueous environment. Plasmonic gold stripes, environment, cross-sectional dimensions 100 nm ×...