Lauren Guillemot
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View article: Off-resonance intracavity up-conversion pumping architecture enabling multi-watt operation of a 2.3-µm Tm:YLF laser
Off-resonance intracavity up-conversion pumping architecture enabling multi-watt operation of a 2.3-µm Tm:YLF laser Open
We present an intra-cavity upconversion pumping scheme for Thulium lasers operating on the 3 H 4 → 3 H 5 transition. It is based on detuning the pump wavelength from the resonance of excited-state absorption, 3 F 4 → 3 F 2,3 , around 1 µm.…
View article: Déclenchement actif d'un laser Pr :LiYF4 visible
Déclenchement actif d'un laser Pr :LiYF4 visible Open
View article: GaSb-based SESAM mode-locked femtosecond 2309-nm Tm:LiYF$_4$ laser
GaSb-based SESAM mode-locked femtosecond 2309-nm Tm:LiYF$_4$ laser Open
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View article: Polarized spectroscopy of Sm3+ ions in monoclinic KGd(WO4)2 crystals for lasers emitting in the red
Polarized spectroscopy of Sm3+ ions in monoclinic KGd(WO4)2 crystals for lasers emitting in the red Open
View article: High-power 2.3 µm Tm:YLF laser with intracavity upconversion pumping by a Nd:ASL laser at 1051 nm
High-power 2.3 µm Tm:YLF laser with intracavity upconversion pumping by a Nd:ASL laser at 1051 nm Open
A Tm:LiYF 4 laser operating on the 3 H 4 → 3 H 5 transition is embedded in a high-power diode-pumped Nd:ASL laser for intracavity upconversion pumping at 1.05 µm. This leads to a record-high output power at 2.3 µm for any bulk thulium lase…
View article: Upconversion-pumped femtosecond thulium laser at 2309 nm mode-locked by a GaSb-based SESAM
Upconversion-pumped femtosecond thulium laser at 2309 nm mode-locked by a GaSb-based SESAM Open
We report on a femtosecond thulium laser operating on the 3 H 4 → 3 H 5 transition with upconversion pumping around 1 µm and passively mode-locked by a GaSb-based SEmiconductor Saturable Absorber Mirror (SESAM). This laser employs a 6 at.%…
View article: 2.8-µm polarization-maintaining Er fiber laser mode-locked by a GaSb-based SESAM
2.8-µm polarization-maintaining Er fiber laser mode-locked by a GaSb-based SESAM Open
A GaSb-based SEmiconductor Saturable Absorber Mirror (SESAM) enables continuous-wave picosecond mode-locked operation with excellent stability of a polarization-maintaining mid-infrared Er:ZBLAN fiber laser. The GaSb-based SESAM mode-locke…
View article: Continuous-wave and SESAM mode-locked 2.3-µm Tm:LiYF<sub>4</sub> lasers: Upconversion pumping at 1.45 µm
Continuous-wave and SESAM mode-locked 2.3-µm Tm:LiYF<sub>4</sub> lasers: Upconversion pumping at 1.45 µm Open
A Tm:LiYF4 laser operating on the 3 H 4 → 3 H 5 transition with upconversion pumping at 1.45 µm generates 831 mW at 2313 nm with 34.0% slope efficiency. Mode-locked by a GaSb- based SESAM, it delivers 855-fs pulses at 104.4-MHz.
View article: High-power intracavity upconversion pumped Tm:YLF laser emitting at 2.3 μm
High-power intracavity upconversion pumped Tm:YLF laser emitting at 2.3 μm Open
A Tm:LiYF4 laser operating on the 3 H 4 → 3 H 5 transition is integrated into a high-power diode-pumped Nd:ASL laser for intracavity upconversion pumping at 1.05 μm. This architecture leads to a record-high output power at 2.3 μm ever extr…
View article: Cascade laser optimization for <sup>3</sup>H<sub>4</sub> → <sup>3</sup>H<sub>5</sub> and <sup>3</sup>F<sub>4</sub> → <sup>3</sup>H<sub>6</sub> sequent transitions in Tm<sup>3+</sup>-doped materials
Cascade laser optimization for <sup>3</sup>H<sub>4</sub> → <sup>3</sup>H<sub>5</sub> and <sup>3</sup>F<sub>4</sub> → <sup>3</sup>H<sub>6</sub> sequent transitions in Tm<sup>3+</sup>-doped materials Open
We study a cascade laser scheme involving the 3 H 4 → 3 H 5 and 3 F 4 → 3 H 6 consecutive transitions in Tm 3+ -doped materials as a promising technique to favor laser emission at 2.3 µm. We examine the conditions in terms of the Tm 3+ dop…
View article: Tm:CALGO lasers at 2.32 µm: cascade lasing and upconversion pumping
Tm:CALGO lasers at 2.32 µm: cascade lasing and upconversion pumping Open
We report on the first laser operation of a disordered Tm:CaGdAlO 4 crystal on the 3 H 4 → 3 H 5 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 absorb…
View article: Excited-state absorption and upconversion pumping of Tm<sup>3+</sup>-doped potassium lutetium double tungstate
Excited-state absorption and upconversion pumping of Tm<sup>3+</sup>-doped potassium lutetium double tungstate Open
We report on a bulk thulium laser operating on the 3 H 4 → 3 H 5 transition with pure upconversion pumping at 1064 nm by an ytterbium fiber laser (addressing the 3 F 4 → 3 F 2,3 excited-state absorption (ESA) transition of Tm 3+ ions) gene…
View article: Dual-wavelength-pumping of mid-infrared Tm:YLF laser at 2.3 µm: demonstration of pump seeding and recycling processes
Dual-wavelength-pumping of mid-infrared Tm:YLF laser at 2.3 µm: demonstration of pump seeding and recycling processes Open
Upconversion pumping of thulium lasers emitting around 2.3 µm (the 3 H 4 → 3 H 5 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-inf…
View article: Excited-state absorption in thulium-doped materials in the near-infrared
Excited-state absorption in thulium-doped materials in the near-infrared Open
Excited-state absorption (ESA) is a key process for upconversion pumping schemes of thulium (Tm 3+ ) doped laser materials. We have systematically studied two ESA transitions in the near-infrared spectral range, namely 3 F 4 → 3 F 2,3 (at …
View article: Etude de la transition 3H4->3H5 de l'ion Tm3+ pour une émission laser moyen infrarouge (entre 2 et 3μm)
Etude de la transition 3H4->3H5 de l'ion Tm3+ pour une émission laser moyen infrarouge (entre 2 et 3μm) Open
The aim of this thesis is to study the 3H4->3H5 of thulium ion for 2,3µm laser emission.Such lasers emitting in the near mid-infrared domain are in high demand nowadays because of their applications in molecules sensing, especially polluta…
View article: Les lasers thulium à 2300 NM : Avancées et perspectives
Les lasers thulium à 2300 NM : Avancées et perspectives Open
Cet article dresse un état des lieux des dernières avancées dans le domaine des lasers dopés aux ions thulium émettant dans le proche infrarouge autour de 2.3 μm. Il présente les verrous liés à l’oscillation laser de l’ion thulium sur la t…
View article: Design and modeling of a passively Q-switched diode-pumped Thulium laser at 2.3 <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e923" altimg="si87.svg"><mml:mi mathvariant="normal">μ</mml:mi></mml:math>m
Design and modeling of a passively Q-switched diode-pumped Thulium laser at 2.3 m Open
View article: Mid-Infrared Laser Emissions of Tm<sup>3+</sup>-doped Garnets: The Case Study of Disordered Tm:CNGG Crystal
Mid-Infrared Laser Emissions of Tm<sup>3+</sup>-doped Garnets: The Case Study of Disordered Tm:CNGG Crystal Open
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View article: Highly efficient 2.3 µm thulium lasers based on a high-phonon-energy crystal: evidence of vibronic-assisted emissions
Highly efficient 2.3 µm thulium lasers based on a high-phonon-energy crystal: evidence of vibronic-assisted emissions Open
We report on highly efficient and power-scalable laser operation in a thulium-doped high-phonon-energy crystal [monoclinic double tungstate, ] on the transition giving rise to the short-wave infrar…
View article: Channel waveguide lasers in bulk Tm:LiYF<sub>4</sub> produced by deep diamond-saw dicing
Channel waveguide lasers in bulk Tm:LiYF<sub>4</sub> produced by deep diamond-saw dicing Open
We report on a novel approach to fabricate channel (ridge) waveguides (WGs) in bulk crystals using precision diamond saw dicing. The channels feature a high depth-to-width aspect ratio (deep dicing). The proof-of-the-concept is shown for a…
View article: Passive Q-switching of a Tm3+:LiYF4 waveguide laser by Cr2+:ZnSe and Co2+:ZnSe saturable absorbers
Passive Q-switching of a Tm3+:LiYF4 waveguide laser by Cr2+:ZnSe and Co2+:ZnSe saturable absorbers Open
View article: Emission properties of Tm3+-doped CaF2, KY3F10, LiYF4, LiLuF 4 and BaY2F8 crystals at 1.5 μm and 2.3 μm
Emission properties of Tm3+-doped CaF2, KY3F10, LiYF4, LiLuF 4 and BaY2F8 crystals at 1.5 μm and 2.3 μm Open
View article: Cross-relaxation and ion clustering in Tm3+:CaF2 crystals
Cross-relaxation and ion clustering in Tm3+:CaF2 crystals Open
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View article: Guided-mode resonance filter extended-cavity diode laser
Guided-mode resonance filter extended-cavity diode laser Open
We characterize a semiconductor external cavity diode laser whose optical\nfeedback is provided by a guided mode resonance filter (GMRF). We focus on the\nspectral properties. The wavelength of operation falls in the telecom range\n(1506 n…
View article: Watt-Level Thulium Laser Operating on the 3H4 → 3 H5 Transition with ~70% Slope Efficiency
Watt-Level Thulium Laser Operating on the 3H4 → 3 H5 Transition with ~70% Slope Efficiency Open
A Thulium laser operating on the 3 H 4 → 3 H 5 transition in high-phonon-energy KLu(WO 4 ) 2 generates 1.12 W at 2.22&2.29 μm with a record-high slope efficiency of 69.2% representing a two-for-one pump process through efficient energy-tra…
View article: Close look on cubic Tm:KY<sub>3</sub>F<sub>10</sub> crystal for highly efficient lasing on the <sup>3</sup>H<sub>4</sub> → <sup>3</sup>H<sub>5</sub> transition
Close look on cubic Tm:KY<sub>3</sub>F<sub>10</sub> crystal for highly efficient lasing on the <sup>3</sup>H<sub>4</sub> → <sup>3</sup>H<sub>5</sub> transition Open
We report on Czochralski growth, detailed ground- and excited-state absorption and emission spectroscopy and highly-efficient mid-infrared (∼2.3 µm) laser operation of a cubic potassium yttrium fluoride crystal, Tm:KY 3 F 10 . The peak sti…
View article: Efficient Tm:LiYF<sub>4</sub> Lasers at ${\sim}2.3~\mu$ m: Effect of Energy-Transfer Upconversion
Efficient Tm:LiYF<sub>4</sub> Lasers at ${\sim}2.3~\mu$ m: Effect of Energy-Transfer Upconversion Open
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View article: Ytterbium calcium fluoride waveguide laser
Ytterbium calcium fluoride waveguide laser Open
Calcium fluoride is a well-known material for optical components. It is also suited for doping with rare-earth ions, e.g., ytterbium ones. Yb:CaF2 is an efficient gain medium for high-power and ultrashort-pulse bulk lasers aroun…
View article: Laser operation of highly-doped Tm:LiYF<sub>4</sub> epitaxies: towards thin-disk lasers
Laser operation of highly-doped Tm:LiYF<sub>4</sub> epitaxies: towards thin-disk lasers Open
Quasi-continuous-wave laser operation of 20 at.% Tm:LiYF4 thin films (84-240 μm) grown by Liquid Phase Epitaxy (LPE) on undoped LiYF4 substrates is achieved. The 240 μm-thick Tm:LiYF4 active layer pumped at…