請用此 Handle URI 來引用此文件: http://hdl.handle.net/11455/94695
標題: Uniformity and Collimation of Incoherence Gaussian Beam With Divergence Based on Only One Fresnel Surface
作者: C. M. Tsai
蔡政穆
關鍵字: Detectors
Ray tracing
Power distribution
Standards
Surface treatment
Lenses
Laser beams
摘要: An incoherence Gaussian beam with divergence is converted to uniformity and collimation simultaneously at a desirable spot size requirement by using one Fresnel surface. The design process is simplified to one-dimension (1-D) with respect to the incoherence Gaussian beam having revolution symmetry. Such a 1-D Gaussian profile is divided into several parts from the center to the outside. The divided power corresponds to a height difference, i.e., to provide uniformity, the power to the corresponding height difference ratio is constant. The ray passing through the boundary of each part is regarded as the incident ray that would be refracted to run parallel to the optical axis through a piece of surface designed for implementing collimation. An incoherence collimated Gaussian beam is demonstrated to verify the conversion beam with uniformity and collimation simultaneously. The simulation results show that the uniformity is around 95% and the collimation is less than 0.1°.
URI: http://hdl.handle.net/11455/94695
顯示於類別:精密工程研究所

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