Nonvolatile plasmonic holographic memory based on photo-driven ion migration

Shuangyan Liu; Shencheng Fu; Xiuxiu Han; Xinnong Wang; Ruiya Ji; Xintong Zhang; Yichun Liu

doi:10.1364/AO.56.006942

Applied Optics
Vol. 56,
Issue 24,
pp. 6942-6948
(2017)
•https://doi.org/10.1364/AO.56.006942

Nonvolatile plasmonic holographic memory based on photo-driven ion migration

Shuangyan Liu, Shencheng Fu, Xiuxiu Han, Xinnong Wang, Ruiya Ji, Xintong Zhang, and Yichun Liu

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Shuangyan Liu, Shencheng Fu, Xiuxiu Han, Xinnong Wang, Ruiya Ji, Xintong Zhang, and Yichun Liu, "Nonvolatile plasmonic holographic memory based on photo-driven ion migration," Appl. Opt. 56, 6942-6948 (2017)

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Abstract

Stability of data storage is essential for optical information processing. ${TiO}_{2}$ nanoporous films loaded with small-sized Ag nanoparticles thus attracted much attention due to their fast and polarization-sensitive photochemical response, which is able to realize optical phase modulation and high-density optical memory. However, little attention was given to the modulation of the silver ion migration, which plays a key role in anti-erasure of the recorded hologram. In this paper, the strong coupling of two phase gratings was achieved by long-term recording in the $Ag - {TiO}_{2}$ film irradiated with a pair of coherent left- and right-hand circular polarization lights from a Blu-ray ( $\sim 405 nm$ ) laser. The migration of ${Ag}^{+}$ ions was enhanced by the electronic field gradient force. A stable polarization holographic grating was obtained by this method and observed by a polarizing microscope. This work provided a strategy for a nonvolatile device based on photo-driven ion migration.

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Polarization Configuration	Variable	RCP-LCP	$s - s$
Maximum APG grating amplitudes	$Δ n_{1, \max}$	0.34	0.44
Maximum MDG grating amplitudes	$Δ n_{2, \max}$	0.977	0.10
Phase grating recording rate constants ( $s^{- 1}$ )	$R_{1}$	$5.32 \times 10^{- 4}$	$1.06 \times 10^{- 8}$
Phase grating recording rate constants ( $s^{- 1}$ )	$R_{2}$	$0.50 \times 10^{- 4}$	$9.38 \times 10^{- 4}$
Phase grating erasure rate constants ( $s^{- 1}$ )	$R_{1 p}$	$4.17 \times 10^{- 4}$	$0.53 \times 10^{- 8}$
Phase grating erasure rate constants ( $s^{- 1}$ )	$R_{2 p}$	$2.08 \times 10^{- 4}$	$0.43 \times 10^{- 4}$
Maximum absorption grating amplitudes ( ${um}^{- 1}$ )	$Δ α_{\max}$	$a$	0.04
Absorption grating recording rate constants ( $s^{- 1}$ )	$R_{3}$	$0.02 \times 10^{- 2}$	0.10
Absorption grating erasure rate constants ( $s^{- 1}$ )	$R_{4}$	$0.02 \times 10^{- 2}$	$1.48 \times 10^{- 3}$

Polarization Configuration	Variable	RCP-LCP	$s - s$
Maximum APG grating amplitudes	$Δ n_{1, \max}$	0.34	0.44
Maximum MDG grating amplitudes	$Δ n_{2, \max}$	0.977	0.10
Phase grating recording rate constants ( $s^{- 1}$ )	$R_{1}$	$5.32 \times 10^{- 4}$	$1.06 \times 10^{- 8}$
Phase grating recording rate constants ( $s^{- 1}$ )	$R_{2}$	$0.50 \times 10^{- 4}$	$9.38 \times 10^{- 4}$
Phase grating erasure rate constants ( $s^{- 1}$ )	$R_{1 p}$	$4.17 \times 10^{- 4}$	$0.53 \times 10^{- 8}$
Phase grating erasure rate constants ( $s^{- 1}$ )	$R_{2 p}$	$2.08 \times 10^{- 4}$	$0.43 \times 10^{- 4}$
Maximum absorption grating amplitudes ( ${um}^{- 1}$ )	$Δ α_{\max}$	$a$	0.04
Absorption grating recording rate constants ( $s^{- 1}$ )	$R_{3}$	$0.02 \times 10^{- 2}$	0.10
Absorption grating erasure rate constants ( $s^{- 1}$ )	$R_{4}$	$0.02 \times 10^{- 2}$	$1.48 \times 10^{- 3}$

Abstract

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Applied Optics