Effect of pulse chirp on small-scale self-focusing of femtosecond pulse with silk diffraction modulation

Lifu Zhang; Xiquan Fu; Zehu Feng; Hua Yang; Shuangchun Wen

doi:10.1117/12.745550

18 December 2007 Effect of pulse chirp on small-scale self-focusing of femtosecond pulse with silk diffraction modulation

Lifu Zhang, Xiquan Fu, Zehu Feng, Hua Yang, Shuangchun Wen

Author Affiliations +

Proceedings Volume 6783, Optical Transmission, Switching, and Subsystems V; 67834J (2007) https://doi.org/10.1117/12.745550
Event: Asia-Pacific Optical Communications, 2007, Wuhan, China

Abstract

We have both numerically and experimentally studied femtosecond chirped optical pulse undergoing self-focusing and splitting into multiple filamentation passing through carbon disulfide (CS₂). From the experimental results, we obtain that broad bandwidth laser pass through a nonlinear medium (CS₂) will occur modulation increase at the particular spatial position, and it shows good agreement with the simulation results. When the width of pulse increases (equal to the value of chirp add), modulation increase of chirped pulse beam will delay. After the modulation increase reaches to a certain value, it will stop increasing and appear new modulation frequency which bring optical beam to split into filamentation.

Citation Download Citation

Lifu Zhang, Xiquan Fu, Zehu Feng, Hua Yang, and Shuangchun Wen "Effect of pulse chirp on small-scale self-focusing of femtosecond pulse with silk diffraction modulation", Proc. SPIE 6783, Optical Transmission, Switching, and Subsystems V, 67834J (18 December 2007); https://doi.org/10.1117/12.745550

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