Zobrazeno 1 - 10
of 305
pro vyhledávání: '"Frédéric Druon"'
Publikováno v:
APL Photonics, Vol 9, Iss 9, Pp 096106-096106-6 (2024)
We report on the chaotic dynamics in a passively Q-switched 2.3-μm thulium laser operating on the 3H4 → 3H5 transition. The experiment exploits a Tm:LiYF4 crystal and various laser cavity configurations, involving an optional cascade laser on the
Externí odkaz:
https://doaj.org/article/60a9d794c2fb45f3856837d586c39803
Publikováno v:
IEEE Photonics Journal, Vol 3, Iss 2, Pp 268-273 (2011)
Laser amplifiers seek high power, efficiency, and short pulse durations. Research laboratories in this field have focused their investigations toward new laser materials that can be efficiently diode pumped, sustain high-power pumping, and have broad
Externí odkaz:
https://doaj.org/article/a0aa8550d6a44ae4848478d9ef658d07
Autor:
Hippolyte Dupont, Lauren Guillemot, Pavel Loiko, Alain Braud, Jean-Louis Doualan, Patrice Camy, Patrick Georges, Frédéric Druon
Publikováno v:
Optics Express
Optics Express, 2022, 30 (18), pp.32141. ⟨10.1364/OE.468695⟩
Optics Express, 2022, 30 (18), pp.32141. ⟨10.1364/OE.468695⟩
Upconversion pumping of thulium lasers emitting around 2.3 µm (the 3H4 → 3H5 transition) has recently attracted a lot of attention as it is compatible with the mature Yb-laser technology. To explore this possibility, we built a mid-infrared Tm:LiY
Autor:
Hippolyte Dupont, Pavel Loiko, Aleksey Tyazhev, Luidgi Giordano, Zhongben Pan, Hongwei Chu, Dechun Li, Bruno Viana, Ammar Hideur, Lauren Guillemot, Alain Braud, Patrice Camy, Patrick Georges, Frédéric Druon
Publikováno v:
Optics Express. 31:18751
We report on the first laser operation of a disordered Tm:CaGdAlO4 crystal on the 3H4 → 3H5 transition. Under direct pumping at 0.79 µm, it generates 264 mW at 2.32 µm with a slope efficiency of 13.9% and 22.5% vs. incident and absorbed pump powe
Autor:
Hussein Taleb, Catherine Le Blanc, Elio Thellier, Pierre Pichon, Frédéric Druon, François Balembois, Patrick Georges
Publikováno v:
Optics letters. 47(14)
The LED-pumping technology is used for the first time, to the best of our knowledge, to develop a complete master oscillator power amplifier (MOPA) system including a multipass amplifier. A pumping head using an original slab architecture is develope
Autor:
Aleksey Tyazhev, Pavel Loiko, Lauren Guillemot, Alexandre Kouta, Rosa Maria Solé, Xavier Mateos, Magdalena Aguiló, Francesc Díaz, Hippolyte Dupont, Patrick Georges, Frédéric Druon, Alain Braud, Patrice Camy, Ammar Hideur
Publikováno v:
Optics Express. 31:14808
We report on a bulk thulium laser operating on the 3H4 → 3H5 transition with pure upconversion pumping at 1064 nm by an ytterbium fiber laser (addressing the 3F4 → 3F2,3 excited-state absorption (ESA) transition of Tm3+ ions) generating 433 mW at
Autor:
Quentin Bournet, Florent Guichard, Michele Natile, Yoann Zaouter, Frédéric Druon, Marc Hanna, Patrick Georges
Publikováno v:
Nonlinear Frequency Generation and Conversion: Materials and Devices XXI.
Autor:
Aleksey Tyazhev, Pavel Loiko, Lauren Guillemot, Alexandre Kouta, Rosa Maria Solé, Xavier Mateos, Magdalena Aguiló, Francesc Díaz, Hippolyte Dupont, Patrick Georges, Frédéric Druon, Alain Braud, Ammar Hideur, Patrice Camy
Publikováno v:
Optica Advanced Photonics Congress 2022.
Excited-state absorption of Tm3+ ions (3F4→3F2,3 and 3H4) in the KLu(WO4)2 crystal is studied. Mid-infrared laser operation (3H4→3H5) is achieved with this crystal under upconversion pumping at 1.06 μm yielding 433 mW at 2291 nm. © 2022 The Aut
Autor:
Hippolyte Dupont, Lauren Guillemot, Pavel Loiko, Alain Braud, Jean-Louis Doualan, Patrice Camy, Patrick Georges, Frédéric Druon
Publikováno v:
Optica Advanced Photonics Congress 2022.
We present studies about upconversion pumping at 1.05 µm for Tm:YLF lasers emitting at 2.3 μm. To improve the performance of this pump, we explore the possibility dual pumping with 780 nm.
Autor:
Hippolyte Dupont, Pavel Loiko, Zhongben Pan, Hongwei Chu, Dechun Li, Bruno Viana, Ammar Hideur, Alain Braud, Lauren Guillemot, Patrice Camy, Patrick Georges, Frédéric Druon
Publikováno v:
Optica Advanced Photonics Congress 2022.
Cascade lasing in a Tm:CALGO crystal at 1.8 µm (3F4→3H6) and 2.3 μm (3H4→3H5) is demonstrated with the originality of lacking a competition between the two laser channels, owing to dual-wavelength (direct and upconversion) pumping.