Flat-top temporal and spatial profiles femtosecond pulse beam generated by phase only modulating

Yong-ming Nie; Jun-hui Liu; Pu-hua Huang; Ji-zhen Tang; Xuehua Yang; Hao-tong Ma; Xiu-jian Li

doi:10.1117/12.2033032

17 September 2013 Flat-top temporal and spatial profiles femtosecond pulse beam generated by phase only modulating

Yong-ming Nie, Jun-hui Liu, Pu-hua Huang, Ji-zhen Tang, Xuehua Yang, Hao-tong Ma, Xiu-jian Li

Proceedings Volume 8904, International Symposium on Photoelectronic Detection and Imaging 2013: High Power Lasers and Applications; 89040O (2013) https://doi.org/10.1117/12.2033032
Event: ISPDI 2013 - Fifth International Symposium on Photoelectronic Detection and Imaging, 2013, Beijing, China

Abstract

The method for generating temporal flat-top waveform and spatial flat-top profile femtosecond pulse beam by phase and polarization controlling is proposed and demonstrated. Based on direct wave front phase modulating, flat-top spatial intensity distribution can be obtained. Combining a folded 4f zero-dispersion system with a polarization controlling setup, the temporal flat-top waveform is generated. Experimental results indicate that for the input both temporal and spatial Gaussian pulse beam with 363 fs temporal width and 1.5 mm beam waist, the temporal width of the output shaped pulse beam is 1.2 ps and 1.9mm beam waist, and the rms variation is about 9.2%, which prove that the temporal flat-top and spatial flat-top femtosecond pulse beam can be generated effectively.

Citation Download Citation

Yong-ming Nie, Jun-hui Liu, Pu-hua Huang, Ji-zhen Tang, Xuehua Yang, Hao-tong Ma, and Xiu-jian Li "Flat-top temporal and spatial profiles femtosecond pulse beam generated by phase only modulating", Proc. SPIE 8904, International Symposium on Photoelectronic Detection and Imaging 2013: High Power Lasers and Applications, 89040O (17 September 2013); https://doi.org/10.1117/12.2033032

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