A5022499056- Spectroscopy and Laser Applications
- Advanced Fiber Laser Technologies
- Advanced Photonic Communication Systems
- Solid-state spectroscopy and crystallography
- Advanced Chemical Sensor Technologies
- Quantum optics and atomic interactions
- Atmospheric Ozone and Climate
- Laser-Matter Interactions and Applications
- Photonic and Optical Devices
- Photorefractive and Nonlinear Optics
- Spectroscopy and Quantum Chemical Studies
- Optical and Acousto-Optic Technologies
- Luminescence Properties of Advanced Materials
- Solid State Laser Technologies
- Analytical Chemistry and Sensors
- Calibration and Measurement Techniques
- Astronomical Observations and Instrumentation
- Air Quality Monitoring and Forecasting
- Semiconductor Lasers and Optical Devices
- Geophysics and Sensor Technology
- Terahertz technology and applications
- Optical Coherence Tomography Applications
- Optical Network Technologies
- Retinal and Macular Surgery
- Microwave and Dielectric Measurement Techniques
LioniX (Netherlands)
2017-2018
Radboud University Nijmegen
2012-2015
Radboud Institute for Molecular Life Sciences
2012-2014
Radboud University Medical Center
2012-2014
Kurchatov Institute
1997-1999
An overview of the most recent developments and improvements to low-loss TriPleX Si 3 N 4 waveguide technology is presented in this paper.The platform provides a suite geometries (box, double stripe, symmetric single asymmetric stripe) that can be combined design complex functional circuits, but more important are manufactured monolithic process flow create compact photonic integrated circuit.All functionalities circuit constructed using standard basic building blocks, namely straight bent...
Optical methods based on quantum cascade lasers (QCLs) are becoming popular in many life science applications. We report two trace gas detection schemes continuous wave QCLs for on-line of nitric oxide (NO) at the sub-part-per-billion level by volume (ppbv, 1:10−9), using wavelength modulation spectroscopy (WMS) and Faraday rotation (FRS) 1894 cm−1 1875.73 cm−1, respectively. Several technical incremental steps discussed to further improve sensitivity these methods. Examples included...
We present a high power, widely tunable, continuous wave external cavity quantum cascade laser designed for infrared vibrational spectroscopy of molecules exhibiting broadband and single line absorption features. The source exhibits mode operation with tunability up to 303 cm−1 (∼24% the center wavelength) at 8 μm, maximum optical output power 200 mW. In combination off-axis integrated spectroscopy, trace-gas detection gases such as acetone was performed noise equivalent sensitivity 3.7 ×...
In this work, we demonstrate the first stress-optic modulator in a silicon nitride-based waveguide platform (TriPleX) telecommunication C-band. our phase refractive index of waveguiding materials is controlled by effect induced actuating 2 μm thick PZT layer on top TriPleX geometry. The efficiency optimized by, amongst others, focusing applied stress core region through local increase cladding. Using Mach-Zehnder interferometer, measured half-wave voltage, V<sub>π</sub>, at 34 V...
An analysis of the absorption and luminescence spectra a Y2SiO5:Pr3+ crystal has revealed existence two Pr3+ optical centers associated with presence impurity ions at nonequivalent cation sites. It is found that energy transported nonradiatively between centers. preliminary transport mechanism carried out.
The next generation of applications in integrated microwave photonics[1], such as optical beam forming networks or programmable photonic processors[2], requires complex chip designs with hundreds even thousands actuators and low propagation losses. While passive material platforms silicon nitride possess ultra-low losses the telecommunication C-Band, today their on-chip phase actuation, however, is solely based on thermo-optic tuners and, hence, suffering from huge power dissipation.
Optical Coherence Tomography (OCT) has made it into the clinic in last decade with systems based on bulk optical components. The next disruptive step will be introduction of handheld OCT systems. Photonic Integrated Circuit (PIC) technology is key enabler for this further miniaturization. PIC allows signal processing a stable platform and implementation common path interferometer that same creates robust fully integrated system flexible fiber probe. In work first spectral domain described...
Photonic integration technology that will enable the development of transceivers interfacing optical and wireless interfaces in future 5G networks, along with preliminary results from our system testbeds are presented. The is developed within framework H2020-ICT-HAMLET project.
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We describe the development of a widely and continuously tunable, mode-hop-free External Cavity QCL for detection medically relevant molecules. Several key issues are implemented to achieve fast high spectral resolution.
In this paper the results of experimental investigation temperature dependence two-pulse photon echo amplitude in a Y<SUB>2</SUB>SiO<SUB>5</SUB>:Pr<SUP>3+</SUP> crystal are presented. The new dephasing mechanism, connected with thermal-activated transitions Pr<SUP>3+</SUP> ion between nonequivalent positions lattice site, is used to explain peculiarities observed experimentally.
An experimental investigation was made of the optical absorption spectra corresponding to transitions in Pr<SUP>3+</SUP> ion crystalline LaF<SUB>3</SUB> matrices. The carried out temperature range 5 divided by 80 K. anomalous redistribution intensity observed spectrum a Pr<SUP>3+</SUP>:LaF<SUB>3</SUB> crystal. This did not agree with hypothesis Boltzman population states discrete multilevel systems.
An investigation was made of the generation powerful stimulated IR radiation in caesium vapour under conditions an isolated resonance with a transition between first excited P state and high S or D level. The main relationships governing appearance were established.
An experimental investigation was made of the optical absorption spectra corresponding to transitions in Pr3+ ion crystalline LaF3 and Y2SiO5 matrices. The carried out temperature range 5 — 80 K. anomalous redistribution intensity observed spectrum a :LaF3 crystal. This did not agree with hypothesis Boltzmann population states discrete multilevel systems.