Multi‐Level Optical Switching by Amorphization in Single‐ and Multi‐Phase Change Material Structures Article Swipe
Simon Wredh
,
Yunzheng Wang
,
Joel K. W. Yang
,
Robert E. Simpson
·
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.1002/adom.202301835
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.1002/adom.202301835
The optical properties of phase‐change materials (PCMs) can be tuned to multiple levels by controlling the transition between their amorphous and crystalline phases. In multi‐material PCM structures, the number of discrete reflectance levels can be increased according to the number of PCM layers. However, the effect of increasing the number of layers on quenching and reversibility has not been thoroughly studied. In this work, the phase‐change physics and thermal conditions required for reversible switching of single and multi‐material PCM switches are discussed based on thermo‐optical phase‐change models and laser switching experiments. By using nanosecond laser pulses, 16 different reflectance levels in Ge 2 Sb 2 Te 5 are demonstrated via amorphization. Furthermore, a multi‐material switch based on Ge 2 Sb 2 Te 5 and GeTe with four discrete reflectance levels is experimentally proven with a reversible multi‐level response. The results and design principles presented herein will impact active photonics applications that rely on dynamic multi‐level operation, such as optical computing, beam steering, and next‐generation display technologies.
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1002/adom.202301835
- https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/adom.202301835
- OA Status
- hybrid
- Cited By
- 16
- References
- 48
- Related Works
- 10
- OpenAlex ID
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All OpenAlex metadata
Raw OpenAlex JSON
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- DOI
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https://doi.org/10.1002/adom.202301835Digital Object Identifier
- Title
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Multi‐Level Optical Switching by Amorphization in Single‐ and Multi‐Phase Change Material StructuresWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2023Year of publication
- Publication date
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2023-11-13Full publication date if available
- Authors
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Simon Wredh, Yunzheng Wang, Joel K. W. Yang, Robert E. SimpsonList of authors in order
- Landing page
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https://doi.org/10.1002/adom.202301835Publisher landing page
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https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/adom.202301835Direct link to full text PDF
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YesWhether a free full text is available
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hybridOpen access status per OpenAlex
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https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/adom.202301835Direct OA link when available
- Concepts
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Materials science, Nanosecond, Photonics, Amorphous solid, Phase-change material, Optical switch, Laser, Optoelectronics, Phase (matter), Phase change, Thermal, Phase transition, Quenching (fluorescence), Optics, Engineering physics, Thermodynamics, Fluorescence, Physics, Engineering, Organic chemistry, ChemistryTop concepts (fields/topics) attached by OpenAlex
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16Total citation count in OpenAlex
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2025: 11, 2024: 5Per-year citation counts (last 5 years)
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10Other works algorithmically related by OpenAlex
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