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High performance visible generation of Ho^(3+)-doped all-fiber lasers

Photonics Research 2023年第12期11卷 2121-2127页

作者： shuaihao ji XUEXIAN LIN BO XIAO ZHONGYU WANG XIUji LIN ZHIPING CAI Department of Electronic Engineering School of Electronic Science and Engineering(National Model Microelectronics College)XiamenUniversityXiamen 361005China

Direct generation of visible frequency from a compact all-fiber laser while preserving high output characteristics has been a subject of research in laser *** investigated the high output performance of all-fiber lasers based on Ho^(3+)-doped ZBLAN fluoride glass fiber especially operating in the deep-red band by pumping at 640 ***,we achieved a maximum continuous-wave output power of 271 m W at 750 nm with a slope efficiency of 45.1%,which represents,to our knowledge,the highest direct output power recorded in an all-fiber laser with a core diameter of less than 10μm in the deep-red ***,we successfully developed a 1.2μm all-fiber laser pumped by a 640 nm *** extensively investigated the correlation between these two-laser generation processes and their performances at 750 nm and 1.2μm *** increasing the pumping rate,we observed an efficient recycling of population through a highly excited state absorption process,which effectively returned the population to the upper laser level of the deep-red ***,we determined the optimized conditions for such lasers,identified the processes responsible for populating the excited state energy levels,and established the corresponding spectroscopic parameters.

关键词： fiber pumping lasers

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维普期刊数据库

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Diode-pumped high-power continuous-wave intracavity frequency-doubled Pr^(3+):YLF ultraviolet lasers around 349 nm

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High Power Laser Science and Engineering 2023年第1期11卷 44-51页

作者： Xiuji Lin Zheng Zhang shuaihao ji Run Fang Bo Xiao Huiying Xu Zhiping Cai Department of Electronic Engineering Xiamen UniversityXiamenChina

High-power continuous-wave ultraviolet lasers are useful for many *** ultraviolet laser sources,the wavelength switching capability and compact structure are very important to extend the applicability and improve the flexibility in practical *** this work,we present two simple and relatively compact schemes by laser diode pumping to obtain a watt-level single-wavelength 348.7-nm laser and discrete wavelength tunable ultraviolet lasers around 349 nm(from 334.7 to 364.5 nm)by intracavity frequency doubling based on Pr^(3+):YLF andβ-BBO *** maximum output power of the single-wavelength 348.7-nm laser is 1.033 *** output powers of the discrete wavelength tunable lasers are at the level of tens of milliwatts,except for two peaks at 348.7 and 360.3 nm with output powers of approximately 500 *** addition,simulations are carried out to explain the experimental results and clarify the tuning mechanisms.

关键词： high-power ultraviolet laser Pr^(3+):YLF tunable ultraviolet laser

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维普期刊数据库

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Diode-pumped wavelength-switchable visible Pr^(3+):YLF laser and vortex laser around 670 nm

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Opto-Electronic Advances 2021年第4期4卷 27-34页

作者： Xiuji Lin Qichen Feng Yao Zhu shuaihao ji Bo Xiao Huiying Xu Wensong Li Zhiping Cai Department of Electronic Engineering School of Electronic Science and Engineering(National Model Microelectronics College)Xiamen UniversityXiamen 361005China

Here we developed a novel wavelength-switchable visible continuous-wave(CW)Pr^(3+):YLF laser around 670 *** single-wavelength laser operations,the maximum output powers of 2.60 W,1.26 W,and 0.21 W,the maximum slope efficiencies of 34.7%,27.3%,and 12.3%were achieved with good beam qualities(M^(2)<1.6)at 670.4 nm,674.2 nm,and 678.9 nm,***-high output power(2.6 W)and record-high slope efficiency(34.7%)were achieved for the Pr^(3+):YLF laser operation at 670.4 *** is also the first demonstration of longer-wavelength peaks beyond 670 nm in the^(3)P_(1)→^(3)F_(3)transition of Pr^(3+):*** multi-wavelength laser operations,the dual-wavelength lasings,including 670.1/674.8 nm,670.1/679.1 nm,and 675.0/679.4 nm,were obtained by fine adjustment of one/two etalons within the ***,the triple-wavelength lasings,e.g.672.2/674.2/678.6 nm and 670.4/674.8/679.4 nm,were successfully ***,both the first-order vortex lasers(LG_(0)^(+1)and LG_(0)^(-1)modes)at 670.4 nm were obtained by off-axis pumping.

关键词： high-power laser visible laser switchable laser deep-red laser

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维普期刊数据库

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