Title :
Study on the focusing characteristics of off-axis parabolic mirror focusing system
Author :
Liu, Xiaoyan ; Lu, Zhiwei ; Wang, Xin ; Jiang, Zhenhua ; Li, Yan
Author_Institution :
Nat. Key Lab. of Sci. & Technol. on Tunable Laser, Harbin Inst. of Technol., Harbin, China
Abstract :
In this paper, an optical simulation model of the off-axis parabolic mirror focusing system based on the ray tracing method has been built up. By analyzing the influence of the detuning angle of the incident beam and the off-axis angle of the off-axis parabolic mirror on the energy concentration of short-pulse laser´s focal spot, the regularity conclusions are presented. The spatial position offset and the pulse broadening of the focal spot have a basic linear relationship with the incident beam detuning angle in the mrad magnitude. With the increasing of the off-axis angle of off-axis parabolic mirror, the influence of incidence beam detuning angle on focal spot diameter was strengthened, as well as less pulse broadening.
Keywords :
laser mirrors; laser tuning; optical focusing; ray tracing; energy concentration; focal spot diameter; incident beam detuning angle; off-axis angle; off-axis parabolic mirror focusing; optical simulation model; pulse broadening; ray tracing method; short-pulse laser focal spot; spatial position offset; Equations; Focusing; Laser beams; Mathematical model; Mirrors; Optical pulses; Optical reflection; off-axis parabolic mirror; ray tracing; short-pulse laser;
Conference_Titel :
Optoelectronics and Microelectronics Technology (AISOMT), 2011 Academic International Symposium on
Conference_Location :
Harbin
Print_ISBN :
978-1-4577-0794-0
DOI :
10.1109/AISMOT.2011.6159331
