Crystal growth and spectroscopic properties of Yb:CaYAlO4 single crystal

Li, Dongzhen; Xu, Xiaodong; Cheng, Yan; Cheng, S. S.; Zhou, Danhong; Feng, Wei; Xia, Changtai; Xu, Jun; Zhang, Jian

doi:10.1016/j.jcrysgro.2010.04.028

Cited by 43 publications

(23 citation statements)

References 31 publications

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“…The random distribution of the unequal charges around the cation sites results in large inhomogeneous broadening. This results in the fluorescence spectrum to be broadband and having a full width at half maximum (FWHM) of 60 nm [11]. The fluorescence spectrum is similar to those of Yb:glass, which is smooth and devoid of emission peaks.…”

Section: Over the Years Various Ybmentioning

confidence: 93%

“…• C. The crystal was antireflection coated at both the pump and laser wavelengths and orientated in the π-direction to maximize [11] pump absorption. A broad stripe laser diode with an emitter size of 94 μm (Lumics GmBH) was used as the pump source.…”

Section: Methodsmentioning

confidence: 99%

“…2. In addition, the amount of absorbed pump power can be further increased by optimizing the Yb 3+ -doping concentration since the segregation coefficient for Yb 3+ ions in CYA is 0.74 [11].…”

Section: Methodsmentioning

confidence: 99%

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Room temperature diode-pumped Yb:CaYAlO4 laser with near quantum limit slope efficiency

Tan

Tang

et al. 2011

Laser Phys. Lett.

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The room temperature continuous wave (CW) laser performance of a compact Yb:CaYAlO4 (Yb:CYA) laser with near quantum limit slope efficiency is demonstrated. Pumped with a CW diode operating at 979 nm, the laser emitted a maximum CW output power of 2.3 W at 1050 nm. The corresponding slope efficiency was found to be 92% while the optical to optical conversion efficiency was 70%. The laser can also be continuously tuned from 1008 nm to 1063 nm using an intracavity SF 10 prism. The round trip cavity losses of Yb:CYA was 0.6% while the loss coefficient of the crystal was 0.01 cm −1 .Output power, W The wavelength tuning curve of the laser measured when an output coupler of 5% transmission was used and the absorbed pump power was fixed at 3.25 W

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Section: Over the Years Various Ybmentioning

confidence: 93%

Section: Methodsmentioning

confidence: 99%

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Room temperature diode-pumped Yb:CaYAlO4 laser with near quantum limit slope efficiency

Tan

Tang

et al. 2011

Laser Phys. Lett.

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“…The sample was cut from the upper part (about 0.5 g) of the as-grown Nd:LSO crystal, and then was ground to powder in an agate mortar. Based on the measured results, the segregation coefficient of Nd 3+ in the as-grown Nd:LSO crystal can be calculated according to the following formula [19] …”

Section: Crystal Growthmentioning

confidence: 99%

Crystal growth, optical properties, and continuous-wave laser operation of Nd3+-doped Lu2SiO5 crystal

Li¹,

Xu²,

Zhou³

et al. 2010

Laser Phys. Lett.

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High quality Nd 3+ -doped Lu 2 SiO 5 (Nd:LSO) crystal has been grown by the Czochralski technique. The cell parameters were analyzed with X-ray diffraction (XRD). Room temperature absorption and fluorescence spectra and fluorescence lifetime of the Nd:LSO crystal were measured and analyzed. The Judd-Ofelt intensity parameters Ω 2,4,6 were obtained to be 2.59, 4.90, and 5.96×10−20 cm 2 , respectively. The absorption and emission cross sections and the branching ratios were calculated. The peak emission cross section is 5.8 and 6.6×10 −20 cm 2 at 1075 and 1079 nm, respectively, with full width at half maximum (FWHM) of 2.8 and 5.1 nm in turn. Pumped by a laser diode, a maximum 2.54 W continuous-wave laser output has been obtained with a slope efficiency of 32%. All the results show that this crystal is a promising laser material. Output power versus absorbed pump power of the Nd:LSO laser pumped by a diode laser

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“…The energy transition of the ytterbium ion (Yb 3+ ) occurs at 2 F 5/2 → 2 F 7/2 . This neat energylevel scheme avoids the emergence of parasitic excited state absorption and up-conversion processes, thus giving low heat load and high quantum efficiency [19,20]. Meanwhile, the absorption spectra of Yb-doped media peak at~979 nm, which can be well pumped by commercially available InGaAs laser diode (one condition that can never be ignored for favorable lasers) [21].…”

Section: Introductionmentioning

confidence: 99%

Advances of Yb:CALGO Laser Crystals

et al. 2021

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Yb:CaGdAlO4, or Yb:CALGO, a new laser crystal, has been attracting increasing attention recently in a myriad of laser technologies. This crystal features salient thermal, spectroscopic and mechanical properties, which enable highly efficient and safe generation of continuous-wave radiations and ultrafast pulses with ever short durations. More specifically, its remarkable thermal-optic property and its high conversion efficiency allow high-power operation. Its high nonlinear coefficient facilitates study of optimized mode locking lasers. Besides, its ultrabroad and flat-top emission band benefits the generation of complex structured light with outstanding tunability. In this paper, we review the recent advances in the study of Yb:CALGO, covering its physical properties as well as its growing applications in various fields and prospect for future development.

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Crystal growth and spectroscopic properties of Yb:CaYAlO4 single crystal

Cited by 43 publications

References 31 publications

Room temperature diode-pumped Yb:CaYAlO4 laser with near quantum limit slope efficiency

Room temperature diode-pumped Yb:CaYAlO4 laser with near quantum limit slope efficiency

Crystal growth, optical properties, and continuous-wave laser operation of Nd3+-doped Lu2SiO5 crystal

Advances of Yb:CALGO Laser Crystals

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