physics.optics physics.app-ph
Observation of polaronic state assisted sub-bandgap saturable absorption
Li Zhou Yiduo Wang Jianlong Kang Xin Li Quan Long Xianming Zhong Zhihui Chen Chuanjia Tong Keqiang Chen Zi-Lan Deng Zhengwei Zhang Chuan-Cun Shu Yongbo Yuan Xiang Ni Si Xiao Xiangping Li Yingwei Wang Jun He