A modification of the geometric optics method for a wave penetrating a caustic

1966 ◽  
Vol 8 (4) ◽  
pp. 467-473 ◽  
Author(s):  
Yu. A. Kravtsov
Keyword(s):  
Geometric Optics

scholarly journals Light shaping from a physical-optics point of view

2020 ◽  
Vol 238 ◽  
pp. 02006
Author(s):  
Liangxin Yang ◽  
Irfan Badar ◽  
Christian Hellmann ◽  
Frank Wyrowski
Keyword(s):  
Fourier Transform ◽  
Optical Element ◽  
Initial Guess ◽  
Point Of View ◽  
Physical Optics ◽  
Diffraction Effect ◽  
Geometric Optics ◽  
Design Task ◽  
Tracing Techniques

In the design of optical element for light shaping, a geometric-optics assumption is usually used, where the validity of the assumption is rarely discussed in literature. In this work, the field tracing techniques for modeling light-shaping systems are presented, which reveals the optical element resulted from those geometric-base algorithm is not always accurate enough for the design task. An example is demonstrated with the functional embodiment of the element. The simulation result shows that diffraction effect may occur, especially in paraxial situation. However, the designed result start with the assumption is well-introduced initial guess for further optimization with the iterative Fourier transform algorithm (IFTA).

scholarly journals Kerr-spacetime geometric optics for vortex beams

2021 ◽  
Vol 104 (1) ◽  
Author(s):  
Fabrizio Tamburini ◽  
Fabiano Feleppa ◽  
Ignazio Licata ◽  
Bo Thidé
Keyword(s):  
Geometric Optics ◽  
Kerr Spacetime ◽  
Vortex Beams

Light scattering by biological spheroidal particles in geometric optics approximation

2007 ◽  
Author(s):  
Andrei E. Lugovtsov ◽  
Alexander V. Priezzhev ◽  
Sergei Y. Nikitin
Keyword(s):  
Light Scattering ◽  
Geometric Optics
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