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Time-resolved single-shot imaging of femtosecond laser induced filaments using supercontinuum and optical polarigraphy

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8 Author(s)
Yan, Lihe ; Key Laboratory for Physical Electronics and Devices of the Ministry of Education and Shaanxi Key Lab of Information Photonic Technique, School of Electronics and information Engineering, Xi’an Jiaotong University, Xianing-xilu 28, Xi’an 710049, China ; Wang, Xiaofang ; Si, Jinhai ; Matsuo, Shigeki
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We have developed an ultrafast time-resolved imaging technique for the propagation dynamics of ultrashort laser pulses in transparent media. This method utilizes the optical polarigraphy technique and a chirped supercontinuum as the probe light. The supercontinuum senses the instantaneous birefringence induced by the propagation of an intense pulse, and a polarigraphy image with different color distributions could be obtained. Using this method, we performed a space-time characterization of the filament induced by a femtosecond laser pulse in CS2, indicating that this technique could be used for the single-shot imaging of pulse propagation dynamics.

Published in:

Applied Physics Letters  (Volume:100 ,  Issue: 11 )