Comparative study on passive Q-switching laser properties of Yb:CaWO4 and Yb:NaY(WO4)2 crystals

Han, Wenjuan; Dong, Liang; Zhang, Yuxia; Xu, Honghao; Liu, Junhai

doi:10.1016/j.optmat.2023.113571

Cited by 5 publications

(2 citation statements)

References 16 publications

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“…In addition, bimetallic tungstate as a class of promising disordered emitters demonstrates exceptional performance in visible and near-infrared ranges [19][20][21]. Notably, visible lasers have been realized in KRE(WO 4 ) 2 (with RE = Gd or Y) crystals [22] and the stable passive Q-switching of a Yb 3+ : NaY(WO 4 ) 2 laser has been demonstrated [23]. Based on the study of bimetallic tungstate in yellow emission, Dy 3+ -doped NaLa(WO 4 ) 2 with encouraging physical properties has attracted our attention [24].…”

Section: Introductionmentioning

confidence: 99%

Efficient and Broadband Emission in Dy3+-Doped Glass-Ceramic Fibers for Tunable Yellow Fiber Laser

Chen

Xiong

et al. 2023

Nanomaterials

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Yellow lasers are of great interest in biology, medicine and display technology. However, nonlinear emission of near-infrared lasers at yellow still presents particularly complex optical alignment to date. Here, to the best of our knowledge, we demonstrate the fabrication of a NaLa(WO4)2: Dy3+ glass-ceramic fiber (GCF) for the first time. More importantly, the emission band of the GCF, which is around 575 nm, has a wide full-width half maximum (FWHM) of 18~22 nm, which is remarkably larger than that of the Dy3+-doped YAG crystal (<7 nm). The precursor fiber (PF) was drawn using the molten core drawing (MCD) method. In particular, benefiting from the in situ nanocrystals fabricated in the amorphous fiber core after thermal treatment, the resultant glass-ceramic fiber exhibits a five-times enhancement of luminescence intensity around 575 nm, compared with the precursor fiber, while retaining its broadband emission. Overall, this work is anticipated to offer a high potential GCF with prominent bandwidth for the direct access of a tunable yellow laser.

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Section: Introductionmentioning

confidence: 99%

Efficient and Broadband Emission in Dy3+-Doped Glass-Ceramic Fibers for Tunable Yellow Fiber Laser

Chen

Xiong

et al. 2023

Nanomaterials

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“…Double tungstates and molybdates formulated as AB(YO 4 ) 2 (A: monovalent cation; Li + , Na + or K + , B: trivalent one; Ln 3+ , Y 3+ , or Bi 3+ , Y: Mo 6+ or W 6+ ) have been a significant research interest thanks to their structural and optical features [1,2]. These compounds crystallize in two phases belonging to the monoclinic and tetragonal structures [1].The high refractive index, nonlinear optical characteristics, luminescence properties, wide transmission range and large optical bandwidths make these compounds potential candidates in laser, light emitting diode, optical amplifier, and nonlinear optical device applications [3][4][5]. NaBi(WO 4 ) 2 and NaBi(MoO 4 ) 2 are two members of this group and the device applications of these compounds are increasing in recent years.…”

Section: Introductionmentioning

confidence: 99%

Tunable nonlinear absorption and optical limiting behavior of NaBi(Mo_xW_1−xO₄)₂ single crystals with ratio of Molybdenum/Tungsten

et al. 2023

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The compositional effect of Mo/W ratio on linear, nonlinear absorption and optical limiting behavior of the NaBi(MoxW1-xO4)2 single crystals grown by Czochralski technique was investigated. X-ray diffraction patterns of the studied crystals presented well-defined peaks associated with the tetragonal crystalline structure. The nonlinear absorption performance and optical limiting threshold were determined using an open-aperture Z-scan technique. A theoretical model including one photon absorption (OPA), two photon absorption (TPA) and free carrier absorption was used to determine the nonlinear absorption parameters. All of the results showed that defect states, which strongly affect nonlinear absorption (NA) and optical limiting behaviors, can be tuned with the Mo/W ratio, enabling NaBi(MoxW1-xO4)2 single crystals to be used in desired optoelectronic applications. Linear optical absorption analysis revealed that bandgap energy and defect states can be tuned by changing the Mo/W ratio in the crystal structure. The obtained results showed that all the studied crystals had NA behavior and the nonlinear absorption coefficient decreased with increasing Mo/W ratio. Sequential TPA is the main NA mechanism for these crystals due to the fact that the incident light energy is lower than the bandgap energies and the existence of the real intermediate state around 2.32 eV.

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Diode-Pumped Tunable Continuous Wave Laser Operation In Yb: NaY(WO4)2 Crystal

Chu,

Yu,

et al. 2024

J Opt

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Comparative study on passive Q-switching laser properties of Yb:CaWO4 and Yb:NaY(WO4)2 crystals

Cited by 5 publications

References 16 publications

Efficient and Broadband Emission in Dy3+-Doped Glass-Ceramic Fibers for Tunable Yellow Fiber Laser

Efficient and Broadband Emission in Dy3+-Doped Glass-Ceramic Fibers for Tunable Yellow Fiber Laser

Tunable nonlinear absorption and optical limiting behavior of NaBi(Mo_xW_1−xO₄)₂ single crystals with ratio of Molybdenum/Tungsten

Diode-Pumped Tunable Continuous Wave Laser Operation In Yb: NaY(WO4)2 Crystal

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Comparative study on passive Q-switching laser properties of Yb:CaWO4 and Yb:NaY(WO4)2 crystals

Cited by 5 publications

References 16 publications

Efficient and Broadband Emission in Dy3+-Doped Glass-Ceramic Fibers for Tunable Yellow Fiber Laser

Efficient and Broadband Emission in Dy3+-Doped Glass-Ceramic Fibers for Tunable Yellow Fiber Laser

Tunable nonlinear absorption and optical limiting behavior of NaBi(MoxW1−xO4)2 single crystals with ratio of Molybdenum/Tungsten

Diode-Pumped Tunable Continuous Wave Laser Operation In Yb: NaY(WO4)2 Crystal

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Tunable nonlinear absorption and optical limiting behavior of NaBi(Mo_xW_1−xO₄)₂ single crystals with ratio of Molybdenum/Tungsten