Microholographic memory is an attractive storage system for its capability to hold high-density data and for its access time. Using a photochromic chromophore (diarylethene)-doped recording medium can give rise to microholographic memory’s durability and contrast. In addition, it is possible to increase the microholographic memory’s density by shift-multiplexed recording, since a hologram pit is constructed in a small area. The microhologram was fabricated in the diarylethene-based sample with two counterpropagating focused beams. Also, surface images and cross-sectional images scanned by a confocal microscope indicated that shift-multiplexed recording was achieved in high contrast.
© 2012 Optical Society of America
Original Manuscript: November 9, 2011
Revised Manuscript: January 19, 2012
Manuscript Accepted: January 20, 2012
Published: May 15, 2012
Yuta Shiga and Chikara Egami, "Shift-multiplexed microhologram fabrication with photoisomeric chromophores," Appl. Opt. 51, 2847-2855 (2012)