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

fYear

2011

fDate

12-16 Oct. 2011

Firstpage

116

Lastpage

119

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Optoelectronics and Microelectronics Technology (AISOMT), 2011 Academic International Symposium on

Conference_Location

Harbin

Print_ISBN

978-1-4577-0794-0

Type

conf

DOI

10.1109/AISMOT.2011.6159331

Filename

6159331