Spectroscopy and laser operation of Ho:CaYAlO_4

Zhou, Danhong; Jiang, Di; Xia, Changtai; Xu, Xiaodong; Feng, Wei; Xu, Jun; Shen, Deyuan; Zhao, Taiping; Strzęp, Adam; Ryba‐Romanowski, W.; Lisiecki, Radosław

doi:10.1364/ome.3.000339

Cited by 17 publications

(7 citation statements)

References 27 publications

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“…Over 4 W of output power could be maintained within the wavelength tuning range of 2076-2100 nm. Further tuning in operating wavelength to less than 2076 nm leaded to a decrease in output power, which can be attributed to the increasing absorption cross section and decreasing emission cross section of the Ho:CYA crystal as shown in Ref [19]. In addition, angular acceptance of the VBG narrowed at shorter wavelength due to the increasing of diffraction angle (12.4° for 2055 nm), resulting in higher cavity loss and hence reduced output power and slope efficiency.…”

Section: Resultsmentioning

confidence: 96%

“…A Ho:CYA crystal of 1 at.% doping concentration was used as the gain medium in our experiment. The polarized absorption and emission spectra of the crystal has been reported in Ref [19]. It was a-cut in a dimension of 3 × 3 × 22.5 mm 3 with both end facets antireflection-coated in the 1800-2150 nm wavelength range.…”

Section: Methodsmentioning

confidence: 99%

“…Due to the randomly distribution of Ca 2+ and Y 3+ ions in the crystal structure, lanthanide ions embedded in this compound could offer extremely broad absorption and emission bands. High optical quality Ho:CYA crystal was first developed and characterized in 2013 [19]. Owing to the broad and smooth fluorescence spectrum, Ho:CYA crystal facilitates widely tunable laser operation around 2.1 μm.…”

Section: Introductionmentioning

confidence: 99%

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Widely tunable, narrow line-width Ho:CaYAlO_4 laser with a volume Bragg grating

Zhang

Shen

et al. 2016

Opt. Mater. Express

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We report on a widely tunable Ho:CYA laser resonantly pumped by a high power Tm:fiber laser at ~1922 nm. A volume Bragg grating is used as a resonator mirror for wavelength selection and spectrum narrowing. A wavelength tuning range of 2055-2100 nm with ~0.1 nm of spectrum line-width has been achieved. Output power of 7.4 W has been obtained at 2095 nm under an incident pump power of 32 W. In freerunning mode, over 11.3 W of output power at ~2085 nm has been generated under 40 W of incident pump power, corresponding to a slope efficiency of 30.7%.

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Section: Resultsmentioning

confidence: 96%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Widely tunable, narrow line-width Ho:CaYAlO_4 laser with a volume Bragg grating

Zhang

Shen

et al. 2016

Opt. Mater. Express

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“…The crystal parameters are a = b = 3.6451 Å, c = 11.8743 Å 25 . The Yb 3+ , Nd 3+ , Pr 3+ , Ho 3+ and Er 3+ -doped CYA crystals have been reported for its excellent physical and chemical properties [26][27][28][29][30] . However, reports on the use of Dy 3+ -doped CYA crystals to simultaneously produce yellow and MIR lasers are scarce so far.As the CYA crystal melts congruently, a Dy 3+ -doped single crystal was successfully grown using the Czochralski technique.…”

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confidence: 99%

Structure and spectral properties of Dy3+ doped CaYAlO4 single crystal

Liu

Wang

et al. 2023

Sci Rep

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A 2 at.% Dy3+: CaYAlO4 single crystal was grown successfully. The electronic structures of Ca2+/Y3+ mixed sites in CaYAlO4 were investigated using first-principles based on density functional theory. The effects of Dy3+ doping on the structural parameters of host crystal were studied using XRD pattern. The optical properties including absorption spectrum, excitation spectrum, emission spectra and fluorescence decay curves were thoroughly investigated. The results show that the Dy3+: CaYAlO4 crystal could be pumped by the blue InGaN and AlGaAs or 1281 nm laser diodes. Furthermore, an intense 578 nm yellow emission was obtained directly under excitation at 453 nm, meanwhile, evident mid-infrared light emitting was observed by 808 or 1281 nm laser excitation. The fitted fluorescence lifetimes of 4F9/2 and 6H13/2 levels were about 0.316 ms and 0.038 ms, respectively. It can be concluded that this Dy3+: CaYAlO4 crystal could simultaneously act as a promising medium for both solid-state yellow and mid-infrared laser outputs.

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“…In this context, rare-earth doped disordered CaLnAlO4 (Ln stands for Gd/Y/Lu) crystals are known for high thermal conductivity as well as broad gain profile in both 1 μm and 2 μm regime [2,3]. However, to date, in addition to a few CW laser results based on Ho:CaYAlO4 [4], no reports of mode-locking were made based on Ho:CaLnAlO4. In this paper, we present first mode-locking results with Ho:CaGdAlO4 (Ho:CALGO), reaching the highest average power mode-locked laser so far achieved in the bulk geometry in the 2-3 μm wavelength region.…”

mentioning

confidence: 99%