High spatial-resolution biological tissue imaging in the second near-infrared region via optical parametric amplification pumped by an ultrafast vortex pulse [Invited]  

作　　者：Xuanke Zeng Congying Wang Yi Cai Qinggang Lin Xiaowei Lu Jiahe Lin Xinming Yuan Wenhua Cao Yuexia Ai Shixiang Xu 曾选科;王聪颖;蔡懿;林庆钢;陆小微;林家和;袁鑫明;曹文华;艾月霞;徐世祥(Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province,Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology,College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen 518060,China;College of Electronics and Information Engineering,Shenzhen University,Shenzhen 518060,China)

机构地区：[1]Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province,Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology,College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen 518060,China [2]College of Electronics and Information Engineering,Shenzhen University,Shenzhen 518060,China

出　　处：《Chinese Optics Letters》2022年第10期8-13,共6页中国光学快报（英文版）

基　　金：partially supported by the National Natural Science Foundation of China(Nos.92050203,62075138,12174264,61827815,12004261,and 61775142);Natural Science Foundation of Guangdong Province(Nos.2021A1515011909 and 2022A1515011457);Shenzhen Fundamental Research Program(Nos.JCYJ20200109105606426,JCYJ20190808164007485,JCYJ20210324095213037,JCYJ20190808121817100,JCYJ20190808143419622,and JCYJ20190808115601653);Shenzhen Key Technology Projects(Nos.JSGG20191231144201722 and JSGG20211108092800001).

摘　　要：Applying an ultrafast vortex laser as the pump,optical parametric amplification can be used for spiral phase-contrast imaging with high gain,wide spatial bandwidth,and high imaging contrast.Our experiments show that this design has realized the 1064 nm spiral phase-contrast idler imaging of biological tissues(frog egg cells and onion epidermis)with a spatial resolution at several microns level and a superior imaging contrast to both the traditional bright-or dark-field imaging under a weak illumination of 7 nW/cm^(2).This work provides a powerful way for biological tissue imaging in the second near-infrared region.

关 键 词：optical parametric amplification ultrafast vortex laser pulse spatial resolution phase-contrast imaging 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] O43[自动化与计算机技术—计算机科学与技术]