Chinese Journal of Lasers B, 2002, 11 (6): 425, 网络出版: 2006-08-08
Studies on the Aero-optical Phenomena of Free-vortex Aerodynamic Window′s Jet
Studies on the Aero-optical Phenomena of Free-vortex Aerodynamic Window′s Jet
high power laser free-vortex aerodynamic window aero-optical phenomena beam quality lateral shearing interferometry far-field beam profile measurement shadowgraphy supersonic jet
摘要
Abstract
The concept of the free-vortex aerodynamic windows(FADW) is one of the best effective methods taking the place of the conventional beam output crystal windows of high power laser. An experimental model of the supersonic free-vortex aerodynamic window has been designed and made in our latest study. This paper studies the aero-optical phenomena of the FADW′s supersonic jet to study the laser optical quality degradation caused by the free-vortex jet, and to find out the relation of output laser beam quality through the FADW to the structure of the FADW′s supersonic jet. First it studies the beam quality using the methods of far-field beam profile measurement and lateral shearing interferometry, and then it uses the principle of matrix-optics interpreting the large-scale phase distortion in detail. At last the structure of FADW′s jet has been studied by means of shadowgraphy.
刘天华, 姜宗福, 李文煜, 王云萍, 刘泽金, 赵伊君. Studies on the Aero-optical Phenomena of Free-vortex Aerodynamic Window′s Jet[J]. Chinese Journal of Lasers B, 2002, 11(6): 425. LIU Tianhua, JIANG Zongfu, LI Wenyu, WANG Yunping, LIU Zejin, ZHAO Yijun. Studies on the Aero-optical Phenomena of Free-vortex Aerodynamic Window′s Jet[J]. 中国激光(英文版), 2002, 11(6): 425.