A simple absorbing boundary algorithm for the FDTD method with arbitrary incidence angle

2003 ◽  
Author(s):  
J.E. Roy ◽  
D.H. Choi
Keyword(s):  
Incidence Angle ◽  
Fdtd Method ◽  
Absorbing Boundary

Limit Of Phase Only Approach In Micro–Lens Design

2012 ◽  
Author(s):  
Ali Jebelli ◽  
Ruzairi Abdul Rahim ◽  
Seyed H. Kazemi
Keyword(s):  
Focal Length ◽  
Fdtd Method ◽  
Absorbing Boundary Conditions ◽  
Lens Design ◽  
Diffractive Optical Elements ◽  
Absorbing Boundary ◽  
Optical Elements ◽  
Perfect Matched Layer ◽  
Difference Time ◽  
Micro Lens

Phase only approach (POA) is generally used to analyze diffractive optical elements (DOEs) such as micro–lenses. We used 3–D finite difference time domain (FDTD) method with perfect matched layer (PML) absorbing boundary conditions to test several micro–lenses that were designed based on phase only approach to evaluate the accuracy of this approach. It is shown that if the focal length is greater than 80λ and 25λ for 2π and 4π phase resets, respectively, the error in the main lobe diffraction efficiency will be less than 10%. Key words: Phase only approach (POA); diffractive optical elements (DOEs); micro–lens

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