Frontiers of Optoelectronics, Volume. 7, Issue 4, 425(2014)
Optical design in high density and high capacity multi-layer data storage system
Fundamental requirements for optical system design for volume recording system is identified. Anastigmatic objective lens design is required for conventional page-based system, whereas for multi-layer volume recording systems, an Aplanatic and zoom optical design is needed with an afocal sub-optical system including a high numerical aperture (NA) objective element. An NA 0.4 and four element design is feasible by only using offthe-shelf components. Recording depth ranges of 0.4 mm for wavelength 532 nm and 0.2 mm for 405 nm. The design demonstrates sufficiently small as-built wavefront error, less than 0.1 waves while implementing focusing and tracking capabilities to the design.
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Yuzuru TAKASHIMA. Optical design in high density and high capacity multi-layer data storage system[J]. Frontiers of Optoelectronics, 2014, 7(4): 425
Category: RESEARCH ARTICLE
Received: Jan. 31, 2014
Accepted: Jul. 24, 2014
Published Online: Jan. 27, 2015
The Author Email: TAKASHIMA Yuzuru (ytakashima@optics.arizona.edu)