| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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High power supercontinuum generation by dual-color femtosecond laser pulses in fused silica |
| Saba Zafar1,2,3, Dong-Wei Li(李东伟)1,†, Acner Camino3, Jun-Wei Chang(常峻巍)3, and Zuo-Qiang Hao(郝作强)1,3,‡ |
1 Shandong Provincial Engineering and Technical Center of Light Manipulation&Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China;
2 Department of Physics, Women University Mardan, Mardan 23200, Pakistan;
3 School of Science, Changchun University of Science and Technology, Changchun 130022, China |
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Abstract High power supercontinuum (SC) is generated by focusing 800 nm and 400 nm femtosecond laser pulses in fused silica with a microlens array. It is found that the spectrum of the SC is getting broader compared with the case of a single laser pulse, and the spectral energy density between the two fundamental laser wavelengths is getting significantly higher by optimizing the phase matching angle of the BBO. It exceeds μJ/nm over 490 nm range which is from 380 nm to 870 nm, overcoming the disadvantage of relative lower power in the ranges far from the fundamental wavelength.
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Received: 06 November 2021
Revised: 23 December 2021
Accepted manuscript online: 29 December 2021
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PACS:
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42.65.Jx
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(Beam trapping, self-focusing and defocusing; self-phase modulation)
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42.65.-k
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(Nonlinear optics)
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42.72.Bj
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(Visible and ultraviolet sources)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 12074228, 11774038, and 11474039), the Taishan Scholar Project of Shandong Province, China (Grant No. tsqn201812043), Natural Science Foundation of Shandong Province, China (Grant No. ZR2021MA023), and the Innovation Group of Jinan (Grant No. 2020GXRC039). |
Corresponding Authors:
Dong-Wei Li, Zuo-Qiang Hao
E-mail: lidongwei@sdnu.edu.cn;zqhao@cust.edu.cn
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Cite this article:
Saba Zafar, Dong-Wei Li(李东伟), Acner Camino, Jun-Wei Chang(常峻巍), and Zuo-Qiang Hao(郝作强) High power supercontinuum generation by dual-color femtosecond laser pulses in fused silica 2022 Chin. Phys. B 31 084209
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