Collection Of theses on high power laser and plasma physics, 2007, 5 (1): 138, Published Online: Sep. 18, 2008  

Beam smoothing by lens array with spectral dispersion

Author Affiliations
National Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science, Shanghai 201800, People’s Republic of China
Abstract
A scheme of combining technology of lens array (LA) and smoothing by spectral dispersion (SSD) is introduced to improve the irradiation uniformity in laser fusion based on the earlier works on LA. The feasibility of the scheme is also analyzed by numerical simulation. It shows that a focal pattern with flat-top and sharp-edge profile could be obtained, and the irradiation nonuniformity can fall down from 14% with only LA to 3% with both SSD and LA. And this smoothing scheme is depended less on the incidence comparing to other smoothing methods. The preliminary experiment has demonstrated its effectiveness.

Shenlei Zhou, Zunqi Lin, Xiujuan Jiang. Beam smoothing by lens array with spectral dispersion[J]. Collection Of theses on high power laser and plasma physics, 2007, 5(1): 138.

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