1 June 2005 Tunable focal depth of an apodized focusing optical system
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Abstract
The axial intensity distribution and focal depth of an apodized 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.
© (2005) Society of Photo-Optical Instrumentation Engineers (SPIE)
Xiumin Gao, Xiumin Gao, Zhou Fei, Zhou Fei, Feng Zhang, Feng Zhang, Jintao Yang, Jintao Yang, Wendong Xu, Wendong Xu, Fuxi Gan, Fuxi Gan, } "Tunable focal depth of an apodized focusing optical system," Optical Engineering 44(6), 063001 (1 June 2005). https://doi.org/10.1117/1.1928282 . Submission:
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