Multi-bit subnanocesond optical switching of GST225 for photonic memory and computing

IF 0.7 4区物理与天体物理 Q4 OPTICS

Journal of Russian Laser Research Pub Date : 2025-02-12 DOI:10.1007/s10946-024-10224-3

Alexey V. Kiselev, Anton A. Burtsev, Vladimir A. Mikhalevsky, Alexey A. Nevzorov, Nikolay N. Eliseev, Vitaly V. Ionin, Andrey A. Lotin

引用次数: 0

Abstract

In this work, we demonstrate stable multi-bit (discrete) modulations of the optical properties of thin-film GST₂₂₅ (Ge₂Sb₂Te₅ or GST) samples as a result of phase transitions induced by femtosecond (≈ 50 fs) laser pulses. An ultra-high crystallization rate of the SET material is shown, ~13 m/s. One- and many-step modulations of optical properties are obtained during crystallization of the sample material. Reamorphization or RESET of the samples occurs at a rate of 5–6 m/s; it is realized in several impacting pulses. This fact indicates the thermal nature of the phase transitions.

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用于光子存储和计算的GST225多比特亚纳秒光开关

在这项工作中，我们证明了薄膜GST225 （Ge2Sb2Te5或GST）样品的光学特性是由飞秒（≈ 50 fs）激光脉冲诱导的相变引起的稳定的多比特（离散）调制。SET材料具有超高的结晶速率，~13 m/s。在样品材料的结晶过程中获得了光学性质的一阶和多阶调制。样品的再晶化或RESET以5-6 m/s的速率发生；它是在几个冲击脉冲中实现的。这一事实表明了相变的热性质。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Russian Laser Research 物理-光学

CiteScore

1.50

自引率

22.20%

发文量

审稿时长

2 months

期刊介绍： The journal publishes original, high-quality articles that follow new developments in all areas of laser research, including: laser physics; laser interaction with matter; properties of laser beams; laser thermonuclear fusion; laser chemistry; quantum and nonlinear optics; optoelectronics; solid state, gas, liquid, chemical, and semiconductor lasers.