Image (IMAGE) Higher Education Press Caption Cascaded MNF spectral broadening Credit Hao Chi, Xinying He, Dezhou Lu, Shuoyang Wang, Jiahui Wu, Mengyang Jin, Xueliang Li, Zhuning Wang, Yaoguang Ma Usage Restrictions none License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.