Share Email Print
cover

Proceedings Paper • new

Adaptive optics for data recovery on optical disk fragments (Conference Presentation)
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

An adaptive optics system is designed and constructed to recover information from damaged optical media. The system is based on an Olympus IX70 microscope with custom illumination and detection. A scanning 408nm laser beam provides both the reference beam for the adaptive optics system and the data beam for imaging of data marks. A two-dimensional galvanometer system is used to scan the focused laser over the sample, and a precision z stage is used to change focus planes. The adaptive optics system is based on a Thorlabs AO kit with a Shack-Hartman wavefront sensor and a deformable mirror. A custom objective lens using a solid immersion lens is implemented that provides NA up to 1.5. Several types of data storage substrates are examined, including partial DVD and BD substrates, small 2cm-square pieces of DVD and BD substrates, and dust fragments on the order of 2mm in size. In order to view the dust fragments, they are collected on a microscope slide and melted to reflow the plastic and reveal data-containing flakes.

Paper Details

Date Published: 20 September 2017
PDF
Proc. SPIE 10384, Optical Data Storage 2017: From New Materials to New Systems, 103840J (20 September 2017); doi: 10.1117/12.2277078
Show Author Affiliations
Thomas D. Milster, College of Optical Sciences, The Univ. of Arizona (United States)
Young Sik Kim, College of Optical Sciences, The Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 10384:
Optical Data Storage 2017: From New Materials to New Systems
Ryuichi Katayama; Yuzuru Takashima, Editor(s)

Video Presentation

Adaptive-optics-for-data-recovery-on-optical-disk-fragments-Conference



© SPIE. Terms of Use
Back to Top