고출력 레이저 시스템의 반사경 열변형에 관한 연구
Thermally Induce Mirror Deformation by a High-power Laser System
4
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
The laser power has been continually increased since the laser was developed in the mid-20th century. Achieving higher laser power requires not only enhancing the cooling performance of laser systems but also addressing the potential degradation of optical characteristics due to thermal deformation induced by laser beam absorption in a mirror. This study delves into the thermal deformation characteristics of mirrors in high-power laser systems. To minimize thermal deformation by heat absorption, Zerodur, known for its low coefficient of thermal expansion, was employed as the mirror material. Various configurations including circular, rectangular, and spline shapes were implemented on a solid mirror structure. Furthermore, two different diameter of a mirror, 300mm and 400mm, were considered to investigate the size effect of the high-power laser beams. Also, three different transmitted beam power were adopted: 50W, 250W, and 500W. Based on the finite element analysis for the thermal deformation, the deformation characteristics of the different types of mirror structures were investigated and analyzed for high-power laser systems.
Abstract
The laser power has been continually increased since the laser was developed in the mid-20th century. Achieving higher laser power requires not only enhancing the cooling performance of laser systems but also addressing the potential degradation of optical characteristics due to thermal deformation induced by laser beam absorption in a mirror. This study delves into the thermal deformation characteristics of mirrors in high-power laser systems. To minimize thermal deformation by heat absorption, Zerodur, known for its low coefficient of thermal expansion, was employed as the mirror material. Various configurations including circular, rectangular, and spline shapes were implemented on a solid mirror structure. Furthermore, two different diameter of a mirror, 300mm and 400mm, were considered to investigate the size effect of the high-power laser beams. Also, three different transmitted beam power were adopted: 50W, 250W, and 500W. Based on the finite element analysis for the thermal deformation, the deformation characteristics of the different types of mirror structures were investigated and analyzed for high-power laser systems.
참고문헌 (13)
- Y. Kim, "A Study on Fiber Laser Weldability for Aluminum 6061 Alloy", Journal of Korean Society of Mechanical Technology, 19(2), pp.216~221 (2017)
- Y. Kim, "A Basic Study on the Laser Weldability of Ti-6Al-4V Alloys(Part I : Analysis of the Influence of Laser Power and Welding Speed)", Journal of Korean Society of Mechanical Technology, 25(6), pp.1179~1185 (2023)
- J. Lee, "A Study on the Optimization of DED Additive Manufacturing Condition and Path for Repairing Aero Parts", Journal of Korean Society of Mechanical Technology, 24(5), pp.942~947 (2022)
- P. Khatak, "Laser cutting technique : A liter-ature review", Materials Today : Proceedings, 56, pp.2484~2489 (2022)
- B. Azadgoli, "Laser applications in surgery", Annals of Translational Medicine, 4(23) (2016)
- Goodwin FE, "A review of operational laser communication systems", Proceedings of the IEEE, 58(10), pp.1746~1752 (1970)
- C. Lyu, "Global analysis of active de-fense technologies for unmanned aerial ve-hicle", IEEE Aerospace and Electronic Systems Magazine, 37(1), pp.6~31 (2022)
- K. Lee, "A Study on the Defense System of the Hypersonic Missile Systems", Journal of Aerospace System Engineering, 16(5), pp.43~48 (2022)
- D. Kim, "Weapon System Development Trend and Defense Strategic Technology Development Direction of Defense and Space field", Journal of the Korea Academia-Industrial cooperation Society, 24(9), pp.581~588 (2023)
- Y. Peng, "Influence of thermal deformations of the output win-dows of high-power laser systems on beam characteristics", Applied Optics, 43(35), pp.6465~6472 (2004)
- A. Cutolo, "Mirror Deformations and Wavefront Aberrations Caused by C. w. High Power Laser Beams", Optica Acta : International Journal of Optics, 27(8), pp.1105~1116 (1980)
- H. Wang, "Simulation and experimental study of laser-induced thermal deformation of spectral beam combination grating", Optics Express, 28(22), pp.33334~33345 (2020)
- T. Ha, "A Study on Honeycomb Structures of a Spherical Mirror using Finite Element Analysis", Journal of Korean Society of Mechanical Technology, 25(4), pp.515~521 (2023)