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Stable ultraviolet ultrafast laser based on all-polarizationmaintaining fiber femtosecond laser

Chinese Optics Letters 2024年第3期22卷 76-82页

作者：田昊朱喆林巍李子豪温俊鹏修昊范怡衡韦池一韦小明杨中民 School of Physics and Optoelectronics/State Key Laboratory of Luminescent Materials and Devices Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and DevicesGuangdong Provincial Key Laboratory of Fiber Laser Materials and Applied TechniquesSouth China University of TechnologyGuangzhou 510640China Research Institute of Future Technology South China Normal UniversityGuangzhou 510006China

We report a high-stability ultrafast ultraviolet(uv)laser source at 352 nm by exploring an all-fiber,all-polarizationmaintaining(all-PM),Yb-doped femtosecond fiber laser at 1060 *** output power,pulse width,and optical spectrum width of the fiber laser are 6 W,244 fs,and 17.5 nm,*** uv ultrashort pulses at a repetition rate of 28.9 MHz are generated by leveraging single-pass second-harmonic generation in a 1.3-mm-long BiB_(3)O_(6)(BIBO)and sum frequency generation in a 5.1-mm-long *** maximum uv output power is 596 *** root mean square error of the output power of uv pulses is 0.54%.This laser,with promising stability,is expected to be a nice source for frontier applications in the uv wavelength window.

关键词： all-polarization-maintaining fiber ultrafast fiber laser uv laser

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Spectrally　Adjustable　Picosecond　Dye　laser　Pulses　Generated　with　Nanosecond　Nitrogen　lasers

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Chinese Journal of lasers 1995年第5期 385-392页

作者： Nguyen Dai Hung Pham Long Dinh Van Trung Nguyen Van Tien Le Hoang Hai and Nguyen Ha (Institute of Material sciences.Vietnam National Centre for Sciences and Technology.Nghia Do,TuLiem,Hanoi,Vietnam)

ＳｐｅｃｔｒａｌｌｙＡｄｊｕｓｔａｂｌｅＰｉｃｏｓｅｃｏｎｄＤｙｅＬａｓｅｒＰｕｌｓｅｓＧｅｎｅｒａｔｅｄｗｉｔｈＮａｎｏｓｅｃｏｎｄＮｉｔｒｏｇｅｎＬａｓｅｒｓＮｇｕｙｅｎＤａｉＨｕｎｇ；ＰｈａｍＬｏｎｇ；Ｄｉｎｈ... 详细信息

ＳｐｅｃｔｒａｌｌｙＡｄｊｕｓｔａｂｌｅＰｉｃｏｓｅｃｏｎｄＤｙｅＬａｓｅｒＰｕｌｓｅｓＧｅｎｅｒａｔｅｄｗｉｔｈＮａｎｏｓｅｃｏｎｄＮｉｔｒｏｇｅｎＬａｓｅｒｓＮｇｕｙｅｎＤａｉＨｕｎｇ；ＰｈａｍＬｏｎｇ；ＤｉｎｈＶａｎＴｒｕｎｇ；ＮｇｕｙｅｎＶａ...

关键词： dye laser spectrotemporal selection laser smooth pulse uv laser

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Correlation of coral fluorescence with nearshore rainfall and runoff in Hainan Island, South China Sea

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Progress in Natural Science:Materials International 2002年第1期 43-46页

作者： PENG Zicheng, HE Xuexian, ZHANG Zhaofeng, ZHOU Jie, SHENG Liusi and GAO Hui( Department of Earth and Space Science, University of Science and Technology of China, Hefei 230026, China State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi' an 710043, China National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026, China. ) Department of Earth and Space Science，University of Science and Technology of China，Hefei 230026，China State Key Laboratory of Loess and Quaternary Geology，Institute of Earth Environment，Chinese Academy of Sciences，Xi'an 710043，China Department of Earth and Space Science，University of Science and Technology of China，Hefei 230026，China State Key Laboratory of Loess and Quaternary Geology，Institute of Earth Environment，Chinese Academy of Sciences，Xi'an 710043，China National Synchrotron Radiation Laboratory，University of Science and Technology of China，Hefei 230026，China.

Under uv-laser excitation, the Porites coral from Longwan bay waters, Hainan Island, could emit yellow-green fluorescence. After fitting the data of the fluorescent intensity (FI) of the coral with the rainfall (RF) in nearshore area of Qionghai, a good relationship between FI and RF was found with a linear formula of RF= 889 - 4. 54 FI and a correlation coefficient of 0.78. Based on this formula, the rainfall sequence from 1982 to 1997 has been reconstructed. The peak annual rainfall is usually related to global El'nino events. By fitting the data of the fluorescent intensity and the runoff (RO), a quadric formula was obtained as RO = - 0.0279FI2 - 18.59 FI- 950.9 with a correlation coefficient of 0.74. The reconstructed runoff sequence from 1982 to 1997 coincided with the rainfall occurrence . The results indicate that flood and drought incidents in coastal areas of the south China are affected by global change to a great extent.

关键词： uv laser coral fluorescence nearshore rainfall river mouth runoff correlation analysis.

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