摘要
设计出不同相移步长的多焦点光子筛阵列,利用相移数字全息术对USAF1951分辨率板进行成像,在光学波段验证了光子筛阵列的相移功能。实验结果表明,多焦点光子筛阵列在不同相移步长下均可消除零级像和共轭像,系统分辨率均与理论预期结果一致。作为一种振幅型衍射透镜,多焦点光子筛阵列在X射线全息术和生物细胞显微等领域有着广阔的应用前景。
Multi-focal photon-sieve arrays with different phase shift steps are designed.The imaging of the USAF1951 resolution board is obtained by phase-shifting digital holography,and the phase-shifting function of the photon-sieve array is verified in optical waveband.The experimental results shows that multi-focal photon-sieve arrays can eliminate zero-order image and conjugate image under different phase shift steps,and the system resolution is consistent with theoretical expected result.As a kind of amplitude diffractive lens,the multi-focal photon-sieve array has a wide application prospect in the fields of X-ray holography and biological cell microscopy.
作者
李优
张军勇
张艳丽
周申蕾
朱健强
Li You;Zhang Junyong;Zhang Yanli;Zhou Shenlei;Zhu Jianqiang(Key Laboratory of High Power Laser and Physics,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;University of Chinese Academy of Sciences t Beijing 100049,China)
出处
《中国激光》
EI
CAS
CSCD
北大核心
2019年第3期256-261,共6页
Chinese Journal of Lasers
基金
国家自然科学基金(61775222)
中国科学院青年创新促进会(2017292)
关键词
全息
数字全息
相移
衍射透镜
X射线成像
holography
digital holography
phase shift
diffractive lenses
X-ray imaging