A5009757662- Photonic Crystal and Fiber Optics
- Advanced Fiber Laser Technologies
- Optical Network Technologies
- Photorefractive and Nonlinear Optics
- Phase-change materials and chalcogenides
- Solid State Laser Technologies
- Advanced Fiber Optic Sensors
- Photonic and Optical Devices
- Glass properties and applications
- Nonlinear Optical Materials Research
- Optical and Acousto-Optic Technologies
- Quantum optics and atomic interactions
- Luminescence Properties of Advanced Materials
- Semiconductor Lasers and Optical Devices
- Spectroscopy and Laser Applications
- Photochemistry and Electron Transfer Studies
- Luminescence and Fluorescent Materials
- Crystal Structures and Properties
- Supramolecular Chemistry and Complexes
- Organic Light-Emitting Diodes Research
- Magneto-Optical Properties and Applications
- Chalcogenide Semiconductor Thin Films
- Advanced Materials and Mechanics
- Liquid Crystal Research Advancements
- Spectroscopy Techniques in Biomedical and Chemical Research
Université Bourgogne Franche-Comté
2016-2024
Laboratoire Interdisciplinaire Carnot de Bourgogne
2015-2024
Université de Bourgogne
2015-2024
Centre National de la Recherche Scientifique
2014-2024
Université d'Angers
2002
Max Planck Society
2001
Max Planck Institute for Polymer Research
2001
Paul Pascal Research Center
1997
CEA Paris-Saclay
1992-1994
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
1991-1994
Since 1987, high-luminance low-voltage driven devices based on tris(8-hydroxyquinoline)aluminum(III) (Alq3) opened the route to design low-cost large area displays and illuminators. Despite number of studies devoted this material, very little is known about its basic structural optical properties in solid state. Therefore, we have investigated structure(s) correlation between intermolecular interactions various Alq3 systems, including solution, amorphous thin films, different crystalline...
We report the fabrication and characterization of first guiding chalcogenide As(2)S(3) microstructured optical fibers (MOFs) with a suspended core. At 1.55 microm, measured losses are approximately 0.7 dB/m or 0.35 according to MOF core size. The have been designed present zero dispersion wavelength (ZDW) around 2 microm. By pumping at strong spectral broadenings obtained in both 1.8 45-m-long by using picosecond fiber laser.
In this work, we report the experimental observation of supercontinua generation in two kinds suspended-core microstructured soft-glass optical fibers. Low loss, highly nonlinear, tellurite and As2S3 chalcogenide fibers have been fabricated pumped close to their zero-dispersion wavelength femtosecond regime by means an parametric oscillator a Ti:Sapphire laser. When coupled into fibers, pulses result 2000-nm bandwidth reaching Mid-Infrared region extending from 750 nm 2.8 µm 1 3.2 respectively.
An As2S3 fiber-based supercontinuum source that covers 3500 nm, extending from near visible to the midinfrared, is successfully reported by using a 200-fs-pulsed pump with nJ-level energy at 2.5 μm. The main features of our are two-fold. On one hand, low-loss microstructured optical fiber has been fabricated, typical attenuation below 2 dB/m in 1–4 μm wavelength range. other 20-mm-long sample sufficient enable spectral broadening, spreading 0.6 4.1 40 dB dynamic
In this work, we present the first crystal growth of cubic Tb2O3 single crystals by a controlled atmosphere flux method which uses heavy metal free solvent working at less than half melting temperature sesquioxide. Cubic millimeter-sized extracted from as-grown boules are phase (powder XRD) and chemically (GDMS) pure exhibit Verdet constant in visible near-infrared spectral ranges, is least three times higher that commercial Tb3Ga5O12 (TGG) crystal. The 1.36 mm thick display transmission...
Abstract We reviewed the tellurite glass purification studies performed over last 20 years, in particular dealing with mid‐infrared (mid‐IR) transmission performances. Best results are obtained under rich O 2 atmosphere platinum crucibles although Gibbs energy calculations show that other material possible such as gold or alumina. From point of view thermodynamics involved oxidation reactions only, we identified suitable conditions based on to be a synthesis temperature set above 900 K and...
In this paper, we investigate the linear and nonlinear properties of GeSbS AsSe chalcogenide photonic crystal fibers. Through several experimental setups, have measured second- third-order chromatic dispersion, effective area, losses, birefringence, Kerr coefficient as well Brillouin Raman scattering properties.
We demonstrate broadband supercontinuum generation over two infrared octaves, spanning from 1.3 to 5.3 μm, with an output power of 150 mW in robust step-index tellurite fibers core diameters between 3.5 and 4.3 μm. As a pump source, we use femtosecond mid-IR pulses home-built post-amplified optical parametric oscillator tunable 1.5 4.0 μm at 43 MHz repetition rate. study the influence size, wavelength, fiber length optimize spectral bandwidth. A key requirement for efficient broadening is...
We demonstrate the fabrication of arsenic- and antimony-free chalcogenide glasses compatible with glass fiber processing. Optical fibers distinct index profiles are presented characterized, namely, single-material or without a suspended core standard step-index varying diameter. In addition, we evidence their potential for nonlinear photonic devices in mid-infrared spectral region by means supercontinuum generation experiments femtosecond regime. Spectral broadenings extend on several...
We demonstrate 1.7–18 µm mid-infrared coherent supercontinuum generation by means of the full transmission window a unique dispersion-engineered step-index Ge-Se-Te fiber. Our study thus opens entire molecular fingerprint region to future chalcogenide fiber platforms.
Adaptative objects based on shape-memory materials are expected to significantly impact numerous technological sectors including optics and photonics. In this work, we demonstrate the manufacturing of optical fibers from thermal stretching additively manufactured preforms. First, show how standard commercially-available thermoplastics can be used produce long continuously-structured microfilaments with abilities. Shape recovery as well programmability performances such elongated assessed....
We present an overview of the fabrication process and characterization tellurite, germanate, germanate–tellurite step-index fibers with different index contrasts. Several compatible core/cladding glass pairs were first explored for fiber manufacturing under ambient atmosphere. The potential resulting waveguides nonlinear optics is revealed by means supercontinuum generation experiments using a near-infrared femtosecond laser. Fabrication preforms was also adapted to dehydration procedures,...
We demonstrate visible light generation in chalcogenide As2S3 microstructured optical fiber. The generated causes irreversible damage to the fiber core because of high absorption coefficient glasses band. SCs (supercontinua) are measured both untapered and tapered fibers, no wider SC is obtained one. growth prevented by since decreases transmission substantially. This effect can be avoided designing enable pump source work single-mode operation.
We report numerical and experimental demonstrations of flexible group-velocity dispersion regimes in step-index tellurite fibers by fine control the fiber core diameter. Our simple design allowed us to explore various nonlinear propagation beyond 2 μm, which involved careful four-wave mixing processes. Combined with recent development μm lasers, we present an easy way tailor supercontinuum generation related coherence features high-demand 1.5-3.5 spectral region.