Bit-wise volumetric storage in transparent materials by ultrafast laser

Guanghua Cheng; Yishan Wang; Guofu Chen; Wei Zhao; Haining Men; Chuandong Sun

doi:10.1117/12.693589

10 June 2006 Bit-wise volumetric storage in transparent materials by ultrafast laser

Guanghua Cheng, Yishan Wang, Guofu Chen, Wei Zhao, Haining Men, Chuandong Sun

Proceedings Volume 6344, Advanced Laser Technologies 2005; 634417 (2006) https://doi.org/10.1117/12.693589
Event: Advanced Laser Technologies 2005, 2005, Tianjin, China

Abstract

We report on an experimental investigation into the recording and readout of 3D high-density optical data storage in transparent optical glasses using a femtosecond laser. A compact Ti:sapphire ultrafast laser amplifier as writing laser was developed to output 100mW 2.1ps at 1KHz with 1W pump laser. Laser pulses modulation is realized by modulating two circuits of trigger pulses signal which are used to control laser pulses trapping and switching out from cavity, respectively. A formatted and coded writing was realized in fused silica and doped polymethylmethacrylate(PMMA) bulk. A phase-contrast and a reflection confocal reading system with software are developed for optical readout of multi-layer data bits in parallel.

Citation Download Citation

Guanghua Cheng, Yishan Wang, Guofu Chen, Wei Zhao, Haining Men, and Chuandong Sun "Bit-wise volumetric storage in transparent materials by ultrafast laser", Proc. SPIE 6344, Advanced Laser Technologies 2005, 634417 (10 June 2006); https://doi.org/10.1117/12.693589

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