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Microstructural and optical analysis of superresolution phenomena due to Ge2Sb2Te5 thin films at blue light regime
- Lee, Hyun Seok;
- Lee, Taek Sung;
- Lee, Yongwoon;
- Kim, Jooho;
- Lee, Suyoun;
- ... Huh, Joo-Youl;
- 외 2명
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12초록
Superresolution (SR) phenomena due to Ge2Sb2Te5 films were examined by combined analysis of the transmission electron microscopy (TEM) microstructures of the laser-irradiated films and the results from dynamic and static tests using blue lasers. A new finding was made that comprises a complementary case of the classical SR readout by Ge2Sb2Te5 film; an amorphous band instead of a closed aperture of melt in the crystalline background forms behind a moving laser but still produces a high SR signal. A complete carrier-to-noise-ratio curve of a SR-read-only memory employing Ge2Sb2Te5 may be derived from a nonlinear optical effect, specifically thermally assisted saturable absorption.
키워드
antimony alloys; germanium alloys; laser beam effects; optical saturation; tellurium alloys; thin films; transmission electron microscopy; NEAR-FIELD STRUCTURE; DISK; RESOLUTION; MEMORY
- 제목
- Microstructural and optical analysis of superresolution phenomena due to Ge2Sb2Te5 thin films at blue light regime
- 저자
- Lee, Hyun Seok; Lee, Taek Sung; Lee, Yongwoon; Kim, Jooho; Lee, Suyoun; Huh, Joo-Youl; Kim, Donghwan; Cheong, Byung-ki
- 발행일
- 2008-12-01
- 유형
- Article
- 권
- 93
- 호
- 22
- 언어
- ENG
- 출판사
- AMER INST PHYSICS
- 발행국가
- 미국
- ISSN
- E 1077-3118
P 0003-6951