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Power-scalable sub-100-fs Tm laser at 2.08μm

High Power Laser Science and Engineering 2021年第4期9卷 41-45页

作者： Li Wang Weidong Chen Yongguang Zhao Hanlin Yang Wei Jing Zhongben Pan Hui Huang Jiachen Liu Ji Eun Bae Fabian Rotermund Pavel Loiko Xavier Mateos Zhengping Wang Xinguang Xu Uwe Griebner Valentin Petrov Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy 12489 BerlinGermany Jiangsu Key Laboratory of Advanced Laser Materials and Devices School of Physics and Electronic EngineeringJiangsu Normal UniversityXuzhou 221116China Institute of Chemical Materials China Academy of Engineering PhysicsMianyang 621900China Key Laboratory of Advanced Ceramics and Mechanical Technology of Ministry of Education School of Materials Science and EngineeringTianjin UniversityTianjin 300072China Department of Physics Korea Advanced Institute of Science and Technology(KAIST)34141 DaejeonRepublic of Korea Centre de Recherche sur les Ions les Matériaux et la Photonique(CIMAP)UMR 6252 CEA-CNRS-ENSICAENUniversitéde Caen14050 Caen Cedex 4France Física i Cristal·lografia de Materials i Nanomaterials(FiCMA-FiCNA) Universitat Rovira i Virgili(URV)43007 TarragonaSpain State Key Laboratory of Crystal Materials and Institute of Crystal Materials Shandong UniversityJinan 250100China

We report on a power-scalable sub-100-fs laser in the 2-μm spectral range using a Tm;-doped‘mixed’(Lu,Sc);O;sesquioxide ceramic as an active *** as short as 58 fs at 2076 nm with an average output power of 114 mW at a pulse repetition rate of approximately 82.9 MHz are generated by employing single-walled carbon nanotubes as a saturable absorber.A higher average power of 350 m W at 2075 nm is obtained at the expense of the pulse duration(65 fs).A maximum average power of 486 mW is achieved for a pulse duration of 98 fs and an optical conversion efficiency of 22.3%,representing the highest value ever reported from sub-100-fs mode-locked Tm lasers.

关键词： 2-μm mode-locked laser single-walled carbon nanotubes Tm:(Lu Sc)_(2)O_(3)

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New Catalytic Proportions for Syntheses of SWNT Bundles (Ropes) and Its Characterization

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Semiconductor Photonics and Technology 2006年第3期12卷 168-172页

作者： DAI Tong DAI Jian-feng School of Sciences Lanzhou University of Technology Lanzhou 730050 CHN

The single-walled carbon nanotube（SWNT） bundles and ropes have been prepared by using the anode are discharge plasma to evaporate the graphite rods which contain Fe, Co and Ni powders as catalyst in He atmosphere. Many purifying methods are used for the products. It indicates that the synthesis of SWNTs has been greatly affected by the preparation parameters of catalyzer, the buffer gas and its pressure, the arc current intensity, etc. The optimal condition for preparing SWNTs in our case has been proposed. The forming mechanism of the SWNTs bundles and ropes is also studied qualitatively. The evaporated single graphite sheet tends to reduce its active energy.

关键词： single-walled carbon nanotubes Catalyzer Evaporation Thermogravimetry

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