Tunable focal depth of an apodized focusing optical system
Data(s) |
2005
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Resumo |
The axial intensity distribution and focal depth of an apoclized focusing optical system are theoretically investigated with two kinds of incident light fields: a uniform-intensity-distribution beam and a Gaussian beam. Both a low-numerical-aperture and a high-numerical-aperture optical system are considered. Numerical results show that the depth of focus can be adjusted by changing the geometrical parameters and transmissivity of the apodizer in the focusing optical system. When a Gaussian beam is employed as the incident beam, the waist width also affects the depth of focus. The tunable range of the focal depth is very considerable. (c) 2005 Society of Photo-Optical Instrumentation Engineers. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Gao XM;Fei Z;Zhang F;Yang JT;徐文东;干福熹.,Opt. Eng.,2005,44(6):63001- |
Palavras-Chave | #光存储 #depth of focus #apodizer #Gaussian beam #intensity distribution #optical data storage |
Tipo |
期刊论文 |