530 W all-fiber continuous-wave Tm-doped fiber laser

Liu, Yinzi; Xing, Ying-Bing; Liao, Lei; Wang, Yibo; Peng, Jinggang; Li, Haiqing; Dai, Nengli; Li, Jinyan

doi:10.7498/aps.69.20200466

Cited by 12 publications

(5 citation statements)

References 22 publications

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“…The output power ~1.2 kW at ~2000 nm was obtained with these lasers in 2018. Their power evolution is presented in Figure 5 [62][63][64][65][66][67][68][69][70][71].…”

Section: Power Evolution Of Re-doped Fiber Lasersmentioning

confidence: 99%

Brief Review of Recent Developments in Fiber Lasers

Nemova

2024

Applied Sciences

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This review covers the recent achievements in high-power rare earth (RE)-doped fiber lasers, Raman fiber lasers, and Brillouin fiber lasers. RE-doped fiber lasers have many applications such as laser cutting, laser welding, laser cleaning, and laser precision processing. They operate in several wavelength ranges including 1050–1120 nm (ytterbium-doped fiber lasers), 1530–1590 nm (erbium- and erbium–ytterbium-doped fiber lasers), and 1900–2100 nm (thulium- and holmium-doped fiber lasers). White spaces in the wavelength spectrum, where no RE-doped fiber lasers are available, can be covered by Raman lasers. The heat power generated inside the laser active medium due to the quantum defect degrades the performance of the laser causing, for example, transverse-mode instability and thermal lensing. It can even cause catastrophic fiber damage. Different approaches permitting the mitigation of the heat generation process are considered in this review. Brillouin fiber lasers, especially multiwavelength Brillouin fiber lasers, have several important applications including optical communication, microwave generation, and temperature sensing. Recent progress in Brillouin fiber lasers is considered in this review.

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“…The output power ~1.2 kW at ~2000 nm was obtained with these lasers in 2018. Their power evolution is presented in Figure 5 [62][63][64][65][66][67][68][69][70][71].…”

Section: Power Evolution Of Re-doped Fiber Lasersmentioning

confidence: 99%

Brief Review of Recent Developments in Fiber Lasers

Nemova

2024

Applied Sciences

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“…2 μm波段激光处于大气窗口附近及人眼安全波段, 在生物医疗 [1−4] 、激光雷达 [5] 、光通信 [6,7] 、材料加工 [8−10] 等多个领域具有十分广泛的应用 [11] . 掺铥(Tm 3+ )光纤作为2 μm光纤激光器核心增益介质 [12] , 近年来一直是研究热点领域. 由于传统掺铥石英光纤在高掺杂浓度上存在局限性 [13] , 高浓度掺杂锗酸盐玻璃、碲酸盐玻璃和硅酸盐玻璃 [14] 成为新的研究热点.…”

Section: 引言unclassified

Preparation and optical properties of thulium doped lanthanum aluminum silicate glass photonic crystal fiber

Xia,

Lu,

Huang

et al. 2023

Acta Phys. Sin.

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Lanthanum aluminum silicate glass has excellent optical properties, such as high solubility of rare earth ions, good thermal stability, and excellent physicochemical properties. Some of its physicochemical properties are similar to those of silica glass, so it is easy to combine with silica glass to fabricate special optical fibers. It is considered to be an ideal laser glass matrix material. In this paper, a series of Tm3+ doped lanthanum aluminum silicate glasses with different concentrations for xTm2O3-(70-x)SiO2-21Al2O3-9La2O3 (x=0.2, 0.4, 0.6, 0.8, 1 mol%) were successfully developed by the traditional high-temperature melting method.Using thulium-doped lanthanum aluminum silicate glass as the fiber core,thulium-doped double-cladding photonic crystal optical fibers were prepared by the stack-and-draw technique and rod in tube method.The core diameter of the thulium-doped lanthanum aluminosilicate glass double-clad photonic crystal fiber is up to 21.7 μm, the inner cladding diameter is about 119.3 μm, and the outer diameter is about 236.8μm. The optical properties of thulium-doped lanthanum aluminum silicate glass and its optical fiber were studied experimentally. Under the excitation of a 793 nm laser,the fluorescence bandwidth of thulium-doped lanthanum aluminum silicate glass was up to 223 nm in the wavelength range of 1550-2050 nm.The fiber laser constructed with thulium-doped lanthanum alumino-silicate glass fiber achieves laser operating at around 2 μm.The fiber laser resonant cavity consists of a pair of dichroic mirrors. The front dichroic mirror has high transmittance for light at 793 nm and high reflectivity(99.9%) for the light within the wavelength of 1850-2050 nm. The back dichroic mirror has high reflectivity(99.9%) for light at 793 nm and high transmittance (~15%) at 2050 nm. Under the our lab experimental conditions, the laser power is up to 253 mW. The slope efficiency is up to 9.67%, which is close to that of the thulium-doped glass fiber laser reported in the literature.It is also found that the central wavelength of fiber laser is shifted to the longer wavelength with the increase of the optical fiber's length.These results sugguest that thulium-doped lanthanum aluminum silicate glass and thulium-doped photonic crystal fiber are suitable for 2 μm fiber laser.

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“…In recent years, high-power narrow-linewidth PM Tm-doped fiber lasers have attracted much interest in many fields such as free space communication [1] , coherent Doppler lidar wind detection [2] , and gravitational wave detection [3] , owing to its advantageous mid-infrared operating at "eye-safe" region from 1600 nm-2100 nm. To date, the output powers of the traditional and narrow-linewidth PM Tm-doped fiber lasers have reached 530 W [4] and 316 W [5] , respectively. The rapid developments are credited with the on-going fiber laser technology.…”

Section: Introductionmentioning

confidence: 99%

160W narrow-linewidth fiber laser with a homemade polarization-maintaining Tm-doped fiber

Xiao,

Liao,

Luo

et al. 2024

Advanced Fiber Laser Conference (AFL2023)

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High-power narrow-linewidth linearly-polarized Tm-doped fiber lasers operating at 2.0μm have attracted extensive interest in both scientific and industrial fields such as free space communication, remote laser sensing, coherent Doppler lidar wind detection, and gravitational wave detection. In this work, an output power of 160 W narrow-linewidth linearly polarized fiber laser operating at 2007.6 nm was realized by employing a homemade polarization-maintaining Thuliumdoped fiber (PMTDF), corresponding to a slope efficiency of 45% and a 3 dB linewidth of 73 pm. The PMTDF was manufactured by modified chemical vapor deposition (MCVD) method combined with solution doping technology, with core and cladding sizes of 25 µm and 400 µm, respectively. The numerical aperture (NA) of the PMTDF is 0.1 and the cladding absorption is 4 dB/m at 793 nm. During the power scaling, the polarization extinction ratio (PER) maintained higher than 16.5 dB, indicating an excellent polarization maintaining performance of the manufactured fiber. The stimulated Brillouin scattering (SBS) and stimulated Raman scattering (SRS) effects were well-suppressed. This work could provide a good reference for the further power scaling of narrow-linewidth linearly polarized fiber lasers operating at 2.0 μm.

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530 W all-fiber continuous-wave Tm-doped fiber laser

Cited by 12 publications

References 22 publications

Brief Review of Recent Developments in Fiber Lasers

Brief Review of Recent Developments in Fiber Lasers

Preparation and optical properties of thulium doped lanthanum aluminum silicate glass photonic crystal fiber

160W narrow-linewidth fiber laser with a homemade polarization-maintaining Tm-doped fiber

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