Calculation of Focal Positions in an Optical Head for Parallel Data Processing with a Monolithic Four-Beam Laser Diode
Applied Optics, Vol. 40, Issue 7, pp. 1065-1073 (2001)
http://dx.doi.org/10.1364/AO.40.001065
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Abstract
A method for calculating focal positions in a multibeam optical head by use of a multibeam laser diode, in which conditions for misalignment of the light source are taken into consideration, is introduced. One calculates the focal positions by using the practical characteristics of a monolithic four-beam laser diode and the practical specifications of the optics in an optical head. The results show that each focal position is defocused mainly as a result of curvature of the fields of the lenses. The adaptability of focal positions for various calculated conditions is discussed from the standpoint of depth of focus.
© 2001 Optical Society of America
[Optical Society of America ]
OCIS Codes
(080.3630) Geometric optics : Lenses
(140.2010) Lasers and laser optics : Diode laser arrays
(210.0210) Optical data storage : Optical data storage
(210.4770) Optical data storage : Optical recording
(220.2740) Optical design and fabrication : Geometric optical design
(220.4830) Optical design and fabrication : Systems design
Citation
Masahisa Shinoda, "Calculation of Focal Positions in an Optical Head for Parallel Data Processing with a Monolithic Four-Beam Laser Diode," Appl. Opt. 40, 1065-1073 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-7-1065
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