A5101498496- Solid State Laser Technologies
- Advanced Fiber Laser Technologies
- Photorefractive and Nonlinear Optics
- Photonic Crystal and Fiber Optics
- Glass properties and applications
- Advanced Frequency and Time Standards
- Geophysics and Sensor Technology
- Luminescence Properties of Advanced Materials
- Orbital Angular Momentum in Optics
- Advanced Measurement and Metrology Techniques
- Quantum optics and atomic interactions
- Astronomical Observations and Instrumentation
- Solid-state spectroscopy and crystallography
- Adaptive optics and wavefront sensing
- Advanced Semiconductor Detectors and Materials
- Semiconductor Lasers and Optical Devices
- Optical properties and cooling technologies in crystalline materials
- Spectroscopy and Laser Applications
- Pulsars and Gravitational Waves Research
- Semiconductor Quantum Structures and Devices
- Mechanical and Optical Resonators
Systèmes de Référence Temps-Espace
2022-2025
Sorbonne Université
2022-2025
Centre National de la Recherche Scientifique
2022-2025
Observatoire de Paris
2022-2025
Université Paris Sciences et Lettres
2023-2025
Laboratoire National de Métrologie et d'Essais
2023
Xiamen University of Technology
2022
Xiamen University
2017-2022
Here we developed a novel wavelength-switchable visible continuous-wave (CW) Pr<sup>3+</sup>:YLF laser around 670 nm. In single-wavelength operations, the maximum output powers of 2.60 W, 1.26 and 0.21 slope efficiencies 34.7%, 27.3%, 12.3% were achieved with good beam qualities (<italic>M</italic><sup>2</sup> < 1.6) at 670.4 nm, 674.2 678.9 respectively. Record-high power (2.6 W) record-high efficiency (34.7%) for operation This is also first demonstration longer-wavelength peaks beyond...
We explore the properties of ultranarrow spectral holes in ensembles solid-state emitters crystals over a range sub-kelvin temperatures, as new step toward leveraging their exceptional coherence more effectively. As an example, we consider potential gain observed application frequency stabilization schemes. investigate how parameters used to burn hole impact its shape, and these factors determine minimum achievable linewidth. In addition stability hole's center frequency, linewidth contrast...
The development of visible fiber lasers toward increasing power and variety has facilitated their usage in a rapidly growing number scientific industrial applications. Until now, holes the spectral region have remained difficult or expensive to fill. Green laser oscillation Ho3+ active fibers contributed bridging so-called "green gap" between readily accessible ranges, which is access with conventional semiconductor sources. However, green are limited because lack high-brightness pump Their...
Tunable coherent light source emitting at the visible region has long been recognized as a key asset, especially with monolithic design involved, for increasing number of emerging applications in scientific research and industrial manufacturing. Here, an efficient 640 nm solid-state laser is used pump source, fiber end-facet mirrors construct resonator. We experimentally developed green wavelength-tunable Ho <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...
We investigate the frequency response of narrow spectral holes in a doped crystal structure as function temperature below 1 K. identify particular regime which this significantly deviates from expected two-phonon Raman scattering theory. Namely, near 290 mK, we observed behavior exhibiting temperature-dependent shift zero to first order. This is interest for applications that require high stability, such laser stabilization, by operating scheme at specific point would result hole being...
High-power red lasers (mainly at 639 and 670 nm) based on Pr3+:YLF crystals have been presented in many works. However, the spectral resources of region not fully developed to obtain due their relatively low emission cross sections irrepressible strong ∼639 nm. In this work, we propose a scheme further develop improve laser powers crystal. The wavelengths are obtained from 634.5 674.7 nm (continuous tunings achieved some wavebands). To best our knowledge, output 638.7, 644.6, 670.1, (2.88 W,...
Direct generation of visible frequency from a compact all-fiber laser while preserving high output characteristics has been subject research in technology. We investigated the performance lasers based on Ho 3+ -doped ZBLAN fluoride glass fiber especially operating deep-red band by pumping at 640 nm. Remarkably, we achieved maximum continuous-wave power 271 mW 750 nm with slope efficiency 45.1%, which represents, to our knowledge, highest direct recorded an core diameter less than 10 μm band....
To date, Ho <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3+</sup> -doped fluoride fibers have been investigated as a viable route for deep-red fiber lasers. However, high output performance lasers around 750 nm proven challenging to achieve due limitations in both the excitation source and pumping mechanism. In this study, we use home-made 640 pump develop laser with rate, obtain compact watt-level efficiency output. Population inversion is...
The agile generation and control of multiple optical frequency modes combined with the realtime processing multi-mode data provides access to experimentation in domains such as optomechanical systems, information processing, spectroscopy. latter, specifically spectroscopy spectral-hole burning (SHB), has motivated our development a heterodyne laser interferometric scheme centered around software-defined radio platform for signal an entirely open-source environment. A challenge SHB is high...
Abstract We demonstrated 22 W LD-pumped high-power continuous-wave (CW) deep red laser operations at 718.5 and 720.8 nm based on an a-cut Pr 3+ :YLF crystal. The output power of both polarized directions reached the watt-level without saturation. A single wavelength operated in π-polarized direction was achieved, with a high 4.5 slope efficiency approximately 41.5%. To best our knowledge, under conditions, are highest 721 nm. By using compact optical glass plate as intracavity etalon, we...
Abstract High-power continuous-wave ultraviolet lasers are useful for many applications. As laser sources, the wavelength switching capability and compact structure very important to extend applicability improve flexibility in practical In this work, we present two simple relatively schemes by diode pumping obtain a watt-level single-wavelength 348.7-nm discrete tunable around 349 nm (from 334.7 364.5 nm) intracavity frequency doubling based on Pr 3+ :YLF $\unicode{x3b2}$ -BBO crystals. The...
We report on the status of improvements to Spectral Hole Burning (SHB) laser stabilization experiment at SYRTE. Current efforts are toward development a novel multi-spectral-hole sensing scheme and preparations for installation dilution cryogenic stage cool spectroscopic crystal below 1 K.