Room-temperature continuous-wave upconversion laser at 455 nm in a Tm^3+ fluorozirconate fiber

Flohic, M. P. Le; Allain, J.Y.; Stéphan, G.; Mazé, G.

doi:10.1364/ol.19.001982

Cited by 55 publications

(8 citation statements)

References 12 publications

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“…Three different approaches can be utilized to solve the problem: (1) enforcing a cascade laser operation on the 3 F 4 → 3 H 6 transition at 1.9 μm, (2) introducing crossrelaxation processes to relieve the 3 F 4 population efficiently by codoping with terbium or europium, and (3) pumping near 1.06 μm in resonance with the ESA transition 3 F 4 → 3 F 2,3 . The first room-temperature CW upconversion laser at 455 nm in a Tm 3+ -doped ZBLAN fiber was demonstrated by Le Flohic et al [128] using two pump sources at 645 nm and 1064 nm. This pumping scheme populates the 1 D 2 level and depopulates the 3 H 4 level efficiently.…”

Section: Upconversion Tmmentioning

confidence: 99%

High-Power ZBLAN Glass Fiber Lasers: Review and Prospect

Zhu

Peyghambarian

2010

Advances in OptoElectronics

280

110

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-NaF), considered as the most stable heavy metal fluoride glass and the excellent host for rare-earth ions, has been extensively used for efficient and compact ultraviolet, visible, and infrared fiber lasers due to its low intrinsic loss, wide transparency window, and small phonon energy. In this paper, the historical progress and the properties of fluoride glasses and the fabrication of ZBLAN fibers are briefly described. Advances of infrared, upconversion, and supercontinuum ZBLAN fiber lasers are addressed in detail. Finally, constraints on the power scaling of ZBLAN fiber lasers are analyzed and discussed. ZBLAN fiber lasers are showing promise of generating high-power emissions covering from ultraviolet to mid-infrared considering the recent advances in newly designed optical fibers, beam-shaped high-power pump diodes, beam combining techniques, and heatdissipating technology.

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Section: Upconversion Tmmentioning

confidence: 99%

High-Power ZBLAN Glass Fiber Lasers: Review and Prospect

Zhu

Peyghambarian

2010

Advances in OptoElectronics

280

110

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“…Therefore, as the excited photons relax to the ground state, the emitted photons have higher energy compared to the pump photons. This effect has been demonstrated in previous systems, namely fiber lasers [2][3][4] ; however, they suffer from high lasing thresholds and incompatibility with on-chip fabrication.…”

Section: Introductionmentioning

confidence: 66%

Low-threshold integrated microlaser emitting in the blue formed from thulium doped silica

Mehrabani

Armani

2014

SPIE Proceedings

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While there are several methods for creating a blue microlaser, most have very high lasing thresholds and are not integrated on a silicon substrate. The present work demonstrates a blue laser based on the upconversion of thulium in a doped silica sol-gel microtoroid resonant cavity integrated on a silicon wafer. The thulium is pumped at 1060nm, and emission occurs near 780nm and 450nm. The high intensity of the circulating optical field in the microcavity increases the photon interaction pathlength and interaction time with the thulium atoms, enabling sub-mW thresholds at both blue and near-IR lasing emissions.

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“…Thereby, the efficiency of the up-conversion is improved obviously. Also, the long length of the medium can compensate the disadvantage of low absorption resulted from the low concentration of the active ions [9][10][11][12][13]. Usually, the absorption band of up-conversion materials is much wider and the absorption of the pump laser is insignificant to the polarization.…”

Section: Blue Lasers Produced By Some Up-conversion Materialsmentioning

confidence: 99%