Research progress of all-solid-state passively Q-switched Er:Yb:glass lasers

Qi, Yue; Bai, Zhenxu; Wang, Yulei; Zhang, Xuanpu; Qi, Yaoyao; Ding, Jie; Bai, Zhenao; Lü, Zhiwei

doi:10.1016/j.infrared.2021.103727

Cited by 11 publications

(5 citation statements)

References 67 publications

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“…However, as shown in Figure 3, the site symmetry (D 2d ) of Er 3+ in the YPO 4 crystal is higher than that (C 1 ) in the GdPO 4 crystal. Similar experimental results have also been observed in the Nd 3+ -doped LuPO 4 and GdPO 4 , as well as in YVO 4 and LaVO 4 crystals, as shown in Table 6. The σ abs and σ em of the Nd 3+ :LuPO 4 (tetragonal structure with a Nd 3+ site symmetry of D 2d ) and Nd 3+ :YVO 4 (tetragonal structure with a Nd 3+ site symmetry of D 2d ) crystals are larger than those of the Nd 3+ :GdPO 4 (monoclinic structure with a Nd 3+ site symmetry of C 1 ) and Nd 3+ :LaVO 4 (monoclinic structure with a Nd 3+ site symmetry of C 1 ) crystals.…”

Section: Fluorescence Lifetimesupporting

confidence: 87%

“…Some Er 3+ -doped glass and crystals have been developed as eye-safe 1.55 μm laser media for meeting the application needs in many areas, for example, lidar, optical communication, trace gas detection, and monitoring. − The fluorescence lifetime of the 4 I 13/2 upper laser multiplet in Er 3+ -doped phosphate glass (PG) is long (∼7 ms), which causes a large quantum efficiency of ∼90% and is beneficial for 1.55 μm laser operation. − Unfortunately, the thermal conductivity of this glass is low (∼0.8 W m –1 K –1 ), which limits its output power . Compared with glass, a crystal generally has higher thermal conductivity.…”

Section: Introductionmentioning

confidence: 99%

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Growth and Spectroscopic Comparison of Monoclinic Er³⁺:GdPO₄ and Tetragonal Er³⁺:YPO₄ Crystals for 1.55 μm Laser Application

Han,

Lin,

Huang

et al. 2024

Crystal Growth & Design

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Using the top-seeded flux method, monoclinic Er 3+ :GdPO 4 and tetragonal Er 3+ :YPO 4 crystals were grown. Polarized spectral properties of these two crystals with different structures were investigated at room temperature and compared. Peak absorption cross sections of the Er 3+ :GdPO 4 crystal for E//Y polarization and Er 3+ :YPO 4 crystal for π polarization are 1.02 × 10 −20 cm 2 at 1525 nm and 4.11 × 10 −20 cm 2 at 1506 nm, respectively. Peak emission cross sections of the Er 3+ :GdPO 4 crystal for E//Y polarization and Er 3+ :YPO 4 crystal for π polarization are 0.88 × 10 −20 cm 2 at 1525 nm and 2.28 × 10 −20 cm 2 at 1506 nm, respectively. For the 4 I 13/2 multiplet of the Er 3+ :GdPO 4 and Er 3+ :YPO 4 crystals, the fluorescence lifetimes are 5.32 and 4.49 ms, and the fluorescence quantum efficiencies are 81 and 95%, respectively. The full widths at half-maximum of the gain spectra of the Er 3+ :GdPO 4 crystal for E//Z polarization and Er 3+ :YPO 4 crystal for π polarization are 60 and 8 nm, respectively, when the inversion parameter is 0.5. Experimental results indicate that the Er 3+ :YPO 4 crystal is a good gain medium of the highly efficient, high-power, and low-threshold 1.55 μm laser, while the Er 3+ :GdPO 4 crystal is a promising gain medium used in broadband tunable and ultrashort pulse 1.55 μm lasers.

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Section: Fluorescence Lifetimesupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Growth and Spectroscopic Comparison of Monoclinic Er³⁺:GdPO₄ and Tetragonal Er³⁺:YPO₄ Crystals for 1.55 μm Laser Application

Han,

Lin,

Huang

et al. 2024

Crystal Growth & Design

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“…This technology can be used to repair production casing damage caused by sucker rod damage or downhole corrosion, as well as to repair old well production casing [1][2][3]. In order to adapt to developments in the oil and gas industry, especially regarding underground temperatures, it is of great significance to develop high-strength, high-plasticity, and corrosion-resistant materials for expandable steel pipes [4][5][6][7]. At present, 316L stainless steel is mostly used as the expanding pipe material, as it meets the technical requirements for shallow oil wells.…”

Section: Introductionmentioning

confidence: 99%

Study on the Low Plastic Behavior of Expansion Deformation of Austenitic Stainless Steel

Wan,

Wu,

Zhang

et al. 2024

Materials

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The plastic deformation of TWIP steel is greatly inhibited during the expansion process. The stress–strain curves obtained through expansion experiments and observations of fracture morphology confirmed the low plastic behavior of TWIP steel during expansion deformation. Through an analysis of the mechanical expansion model, it was found that the expansion process has a lower stress coefficient and a faster strain rate than stretching, which inhibits the plasticity of TWIP steel during expansion deformation. Using metallographic microscopy, transmission electron microscopy, and EBSD to observe the twin morphology during expansion deformation and tensile deformation, it was found that expansion deformation has a higher twin density, which is manifested in a denser twin arrangement and a large number of twin deliveries in the microscopic morphology. During the expansion deformation process, dislocation slips are hindered by twins, the free path of the slips is reduced, and dislocations accumulate significantly. The accumulation area is the initial point of crack expansion. The results show that the significant dislocation accumulation caused by the delivery of a large number of twins under expansion deformation is the main reason for the decrease in the plasticity of TWIP steel.

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“…Since the 1960s, lasers have developed rapidly in terms of wavelength diversification, power scaling (average and peak value), and miniaturization, promoting the rapid development of manufacturing, life science, information technology, scientific research, and defense. [1][2][3][4][5][6][7][8][9] Coherence (spatial and temporal coherence), an important characteristic of lasers different from other light sources, has been a focus of research on laser techniques. 10,11 Spatial coherence describes the phase relationship between the points on the wave surface perpendicular to the beam propagation direction, which is a necessary premise for laser directivity.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A comprehensive review on the development and applications of narrow‐linewidth lasers

Bai

Zhao

Tian

et al. 2021

Micro & Optical Tech Letters

Self Cite

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With high-temporal coherence and low-phase noise, narrowlinewidth lasers have important applications in spectroscopy, holography, and coherent detection. At present, ultra-narrowlinewidth lasing is generated by solid-state, optical fiber, and semiconductor lasers, which serve as a good light source for scientific research and industrial applications. In this article, we summarize the fundamental techniques and review recent developments in narrow-linewidth lasers. Moreover, typical applications of narrow-linewidth lasers are discussed to provide reliable and easy-to-use references for comparing the performance of narrow-linewidth lasers.

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Research progress of all-solid-state passively Q-switched Er:Yb:glass lasers

Cited by 11 publications

References 67 publications

Growth and Spectroscopic Comparison of Monoclinic Er³⁺:GdPO₄ and Tetragonal Er³⁺:YPO₄ Crystals for 1.55 μm Laser Application

Growth and Spectroscopic Comparison of Monoclinic Er³⁺:GdPO₄ and Tetragonal Er³⁺:YPO₄ Crystals for 1.55 μm Laser Application

Study on the Low Plastic Behavior of Expansion Deformation of Austenitic Stainless Steel

A comprehensive review on the development and applications of narrow‐linewidth lasers

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Research progress of all-solid-state passively Q-switched Er:Yb:glass lasers

Cited by 11 publications

References 67 publications

Growth and Spectroscopic Comparison of Monoclinic Er3+:GdPO4 and Tetragonal Er3+:YPO4 Crystals for 1.55 μm Laser Application

Growth and Spectroscopic Comparison of Monoclinic Er3+:GdPO4 and Tetragonal Er3+:YPO4 Crystals for 1.55 μm Laser Application

Study on the Low Plastic Behavior of Expansion Deformation of Austenitic Stainless Steel

A comprehensive review on the development and applications of narrow‐linewidth lasers

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Product

Resources

About

Growth and Spectroscopic Comparison of Monoclinic Er³⁺:GdPO₄ and Tetragonal Er³⁺:YPO₄ Crystals for 1.55 μm Laser Application

Growth and Spectroscopic Comparison of Monoclinic Er³⁺:GdPO₄ and Tetragonal Er³⁺:YPO₄ Crystals for 1.55 μm Laser Application