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Simultaneous generation of controllable double white light lasers by focusing an intense femtosecond laser pulse in air

Yaoxiang Liu, Tie-Jun Wang, Na Chen, Hao Guo, Haiyi Sun, Lu Zhang, Zheng Qi, Yuxin Leng, Zhanshan Wang, and Ruxin Li

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Abstract

We report on a simultaneous generation of double white light lasers through filamentation by focusing a femtosecond laser pulse. The appearance of the two white light lasers can be controlled by tilting the focusing lens. The spectral bandwidth and the pulse energy of the double white light lasers were controlled by tuning laser filamenting pulse energy and polarization. Two white light lasers with pulse energies of 1.54 mJ and 1.84 mJ, respectively, were generated with the pump laser energy of 7.43 mJ. Besides being beneficial in understanding the multiple white light lasers generation process through multiple filamentation and its control, the results are also valuable for white light laser-based applications.

© 2020 Chinese Laser Press

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