상세정보
학술지
Rewritable Full-color Computer-generated Holograms based on Color-selective Diffractive Optical Components including Phase-change Materials
- 발행일
- 201812
- 출처
- Nanoscale, v.10 no.46, pp.21537-22068
- ISSN
- 2040-3364
- 출판사
- Royal Society of Chemistry (RSC)
- 협약과제
- 18MF1200, 디지털 홀로그래픽 테이블탑형 단말 기술 개발, 김진웅
- 초록
- We propose rewritable full-color computer-generated holograms (CGHs) based on color-selective diffraction using the diffractive optical component with the resonant characteristic. The structure includes an ultrathin layer of phase-change material Ge2Sb2Te5 (GST) on which a spatial binary pattern of amorphous and crystalline states can be recorded. The CGH patterns can be easily erased and rewritten by the pulsed ultraviolet laser writing technique owing to the thermally reconfigurable characteristic of GST. We experimentally demonstrate that the fabricated CGH, having a fine pixel pitch of 2 μm and a size of 32.8 × 32.8 mm2, reconstructs the three-dimensional holographic images. In addition, the feasibility of the rewritable property is verified by erasing and rewriting part of the CGH.
- KSP 제안 키워드
- Binary pattern, Computer generated holograms(CGH), Phase Change Material(PCM), Three dimensional(3D), Ultraviolet laser, color-selective, erasing and rewriting, full-color, laser writing, optical components, ultrathin layer