Femtosecond mode-locked Tm^3+ and Tm^3+-Ho^3+ doped 2 μm glass lasers

Fusari, F.; Lagatsky, A.A.; Jose, Gin; Calvez, S.; Jha, Animesh; Dawson, Martin D.; Gupta, J. A.; Sibbett, W.; Brown, C.T.A.

doi:10.1364/oe.18.022090

Cited by 59 publications

(35 citation statements)

References 23 publications

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“…It is interesting to note that the ascending order of the parameters is X 6 < X 2 < X 4 for the presented glasses and the trend can be observed in other rare earth doped FP glasses 31 which also contain high concentrations of Al(PO 3 ) 3 . As we all know, the Judd-Ofelt parameters are closely related to the local structure and bonding in the vicinity of rare-earth ions.…”

Section: A Judd-ofelt Analysissupporting

confidence: 54%

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Enhanced effect of Ce3+ ions on 2 μm emission and energy transfer properties in Yb3+/Ho3+ doped fluorophosphate glasses

Tian,

Xu,

Zhang

et al. 2011

Journal of Applied Physics

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Effect of Ce 3þ ions introduction on 2 lm emission properties and energy transfer mechanism in Yb 3þ /Ho 3þ -doped fluorophosphate glass has been investigated. From the measured fluorescence spectra, strong emission near 2 lm is demonstrated due to the sensitization of Yb 3þ and Ce 3þ . Based on the absorption spectra, the Judd-Ofelt parameters and radiative properties were calculated and compared with those of other glass hosts. In addition, the energy transfer coefficient from Yb 3þ to Ho 3þ is 9.52 Â 10 À40 cm 6 /s in Yb 3þ /Ho 3þ /Ce 3þ triply doped sample and is three times larger than that in undoped Ce 3þ sample. These results suggest that this Yb 3þ /Ho 3þ /Ce 3þ fluorophosphate glass with excellent thermal stability and efficient energy transfer from Yb 3þ to Ho 3þ is a good candidate for 2 lm laser.

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Section: A Judd-ofelt Analysissupporting

confidence: 54%

“…5 I 8 ) in 2.0 lm region which have potential applications in the fields of military, medical surgery and atmosphere pollution monitoring. [1][2][3] To enhance pump absorption, Ho 3þ doped glasses have been sensitized with either Tm 3þ ,Yb 3þ or Er 3þ (Refs. 1, 4 and 5).…”

Section: Introductionmentioning

confidence: 99%

Enhanced effect of Ce3+ ions on 2 μm emission and energy transfer properties in Yb3+/Ho3+ doped fluorophosphate glasses

Tian,

Xu,

Zhang

et al. 2011

Journal of Applied Physics

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“…Recently, lasing and mode-locked operation from bulk thulium-doped tellurite glasses were reported [20,[26][27][28]. Since Tm 3+ -doped tellurite glasses offer a great potential for the development of 2-µm laser sources in bulk as well as fiber configurations, there is interest in further exploring the spectroscopic properties of the tellurite glass hosts doped with thulium.…”

Section: Introductionmentioning

confidence: 99%

Comparative Spectroscopic Investigation of Tm3+:Tellurite Glasses for 2-μm Lasing Applications

et al. 2018

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Abstract:We performed a comparative spectroscopic analysis on three novel Tm 3+ :tellurite-based glasses with the following compositions Tm 2 O 3 :TeO 2 -ZnO (TeZnTm), Tm 2 O 3 :TeO 2 -Nb 2 O 5 (TeNbTm), and Tm 3+ :TeO 2 -K 2 O-Nb 2 O 5 (TeNbKTm), primarily for 2-µm laser applications. Tellurite glasses were prepared at different doping concentrations in order to investigate the effect of Tm 3+ ion concentration as well as host composition on the stimulated emission cross sections and the luminescence quantum efficiencies. By performing Judd-Ofelt analysis, we determined the average radiative lifetimes of the 3 H 4 level to be 2.55 ± 0.07 ms, 2.76 ± 0.03 ms and 2.57 ± 0.20 ms for the TeZnTm, TeNbTm and TeNbKTm samples, respectively. We clearly observed the effect of the cross-relaxation, which becomes significant at higher Tm 2 O 3 concentrations, leading to the quenching of 1460-nm emission and enhancement of 1860-nm emission. Furthermore, with increasing Tm 2 O 3 concentrations, we observed a decrease in the fluorescence lifetimes as a result of the onset of non-radiative decay. For the 3 H 4 level, the highest obtained quantum efficiency was 32% for the samples with the lowest Tm 2 O 3 ion concentration. For the 1860-nm emission band, the average emission cross section was determined to measure around 6.33 ± 0.34 × 10 −21 cm 2 , revealing the potential of thulium-doped tellurite gain media for 2-µm laser applications in bulk and fiber configurations.

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“…On 90 one hand semi-conductor lasers are compact, efficient direct optical energy generators, on the other hand they represent good pump sources for lasers. We discuss the two main semiconductor lasers operating in the mid-IR: quantum cascade lasers, that have been used to generate broadband few picosecond duration laser pulses, and lead-salt diode lasers, whose integration in thin-disk 95 architecture has enabled room temperature pulsed operation.…”

Section: Semiconductor Mid-ir Sourcesmentioning

confidence: 99%

“…It is still early to summarize all the capabilities of Ho-doped materials -partially plagued by a strong quasi-three level behavior [93] -but a number of exciting results have already been reported [94]. A 1997 nm 410 femtosecond near-transform-limited 84 mW passively mode-locked laser was reported [95]. Fonnum et al demonstrated a 0.5 J, cryogenically cooled, nanosecond Q-switched Ho:YLF laser system operating at 1 Hz repetition rate [96].…”

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confidence: 99%

Ultrashort pulse generation in the mid-IR

Pires

Baudisch

Sánchez

et al. 2015

Progress in Quantum Electronics

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Recent developments in laser sources operating in the mid-IR (3 -8 µm), have been motivated by the numerous possibilities for both fundamental and applied research. One example is the ability to unambiguously detect pollutants and carcinogens due to the much larger oscillator strengths of their absorption features in the mid-IR spectral region compared with the visible. Broadband sources are of particular interest for spectroscopic applications since they remove the need for arduous scanning or several lasers and allow simultaneous use of multiple absorption features thus increasing the confidence level of detection. In addition, sources capable of producing ultrashort and intense mid-IR radiation are gaining relevance in attoscience and strong-field physics due to wavelength scaling of re-collision based processes. In this paper we review the state-of-the-art in sources of coherent, pulsed mid-IR radiation. First we discuss semi-conductor based sources which are compact and turnkey, but typically do not yield short pulse duration. Mid-IR laser gain material based approaches will be discussed, either for direct broadband mid-IR lasers or as narrowband pump lasers for parametric amplification in nonlinear crystals. The main part will focus on mid-IR generation and amplification based on parametric frequency conversion, enabling highest mid-IR peak power pulses. Lastly we close with an overview of nonlinear post-compression techniques, for decreasing pulse duration to the sub-2-optical-cycle regime.

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Femtosecond mode-locked Tm^3+ and Tm^3+-Ho^3+ doped 2 μm glass lasers

Cited by 59 publications

References 23 publications

Enhanced effect of Ce3+ ions on 2 μm emission and energy transfer properties in Yb3+/Ho3+ doped fluorophosphate glasses

Enhanced effect of Ce3+ ions on 2 μm emission and energy transfer properties in Yb3+/Ho3+ doped fluorophosphate glasses

Comparative Spectroscopic Investigation of Tm3+:Tellurite Glasses for 2-μm Lasing Applications

Ultrashort pulse generation in the mid-IR

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