Multiple refocusing in BK9 glass generated by a loosely focused high-intensity femtosecond pulse

Wenjun Liu; Xiang Lin; Lihui Pang; Xiaowei Song

doi:10.1117/1.OE.51.9.099001

14 September 2012 Multiple refocusing in BK9 glass generated by a loosely focused high-intensity femtosecond pulse

Wenjun Liu, Xiang Lin, Lihui Pang, Xiaowei Song

Author Affiliations +

Funded by: National Natural Science Foundation of China, Natural Science Foundation of Shandong Province, Natural Scientific Research Innovation Foundation in Harbin Institute of Technology

Optical Engineering, Vol. 51, Issue 9, 099001 (September 2012). https://doi.org/10.1117/1.OE.51.9.099001

Abstract

Multiple refocusing in BK9 glass induced by a loosely focused high-intensity femtosecond pulse is studied experimentally and numerically. Multiple refocusing and small filament are clearly observed in the sample irradiated by loosely focused 120 fs femtosecond laser pulses with high power, up to 500 times the self-focusing critical power. Up to five refocusing peaks are observed along the direction of the pulse propagation. The dependence of the intensity distribution of the plasma luminescence on the pulse energy is investigated.

Citation Download Citation

Wenjun Liu, Xiang Lin, Lihui Pang, and Xiaowei Song "Multiple refocusing in BK9 glass generated by a loosely focused high-intensity femtosecond pulse," Optical Engineering 51(9), 099001 (14 September 2012). https://doi.org/10.1117/1.OE.51.9.099001

Published: 14 September 2012

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