Spot size and depth of focus in optical data storage system

Haifeng Wang; Gaoqiang Yuan; Weilian Tan; Luping Shi; Chong Tow Chong

doi:10.1117/1.2744063

1 June 2007 Spot size and depth of focus in optical data storage system

Haifeng Wang, Gaoqiang Yuan, Weilian Tan, Luping Shi, Chong Tow Chong

Author Affiliations +

Optical Engineering, Vol. 46, Issue 6, 065201 (June 2007). https://doi.org/10.1117/1.2744063

Abstract

Different definitions of spot size and depth of focus in optical data storage systems are analyzed and compared numerically. It appears that the differences between the definitions become more significant as the numerical aperture of the optical system increases. The relationship between spherical aberration and axial intensity is studied, and a general definition of the depth of focus based on this analysis is proposed.

©(2007) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Haifeng Wang, Gaoqiang Yuan, Weilian Tan, Luping Shi, and Chong Tow Chong "Spot size and depth of focus in optical data storage system," Optical Engineering 46(6), 065201 (1 June 2007). https://doi.org/10.1117/1.2744063

Published: 1 June 2007

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