Improved uniform irradiation by combining periodic chirped pulse, sinusoidal phase modulation light and lens array

作者：Cheng Wenyong^*; Zhang Xiaomin; Su Jingqin; Zhao Shengzhi; Li Ping; Dong Jun; Zhou Lidan

来源：Journal of Optics A: Pure and Applied Optics , 2009, 11(1): 015709.

DOI：10.1088/1464-4258/11/1/015709

• periodic chirped pulse
• spectral dispersion
• lens array
• uniform irradiation

A new method is proposed for obtaining two-dimensional beam smoothing. The periodic chirped pulse generated at the front end of the laser driver is dispersed in one direction and the bulk frequency modulation is used to generate another broad band. Then the beam is dispersed in the other direction. The pattern of the far-field is simulated. The result shows this method can reduce the high influence of the four outer corners. By combining a lens array, an improved uniform pattern on the target can be obtained.

• 出版日期2009-1
• 单位中国工程物理研究院; 山东大学; 中国工程物理研究院激光聚变研究中心