Controllable speckle compression in atomic vapor by frequency modulation and its application in ghost imaging

• 来源期刊: 中国科学（物理学 力学 天文学）
• 年，卷（期）: 2018,（9）
• 页码范围: 91-94
• 页数: 4页
• 语种: 中文

摘要

An image undergoes a paraxial diffraction spreading when propagating in free space.The reduction of diffraction is critical for many potential applications [1-3].Recently,it has been recognized that optical diffraction can be greatly suppressed or even eliminated by using atomic coherence effects [4-9].Several experimental attempts to extent the application to efficient transfer and conversion of small images [10,11],optical manipulation of light beams [12],and arbitrary optical image cloning [13].