Ultrafast heterodyne mode imaging and refractive index mapping of a femtosecond laser written multimode waveguide

Wu, S; Gao, ZH; Wu, TW; Zhang, ZF; Feng, L

Feng, L (通讯作者),Univ Penn, Dept Mat Sci & Engn, 3231 Walnut St, Philadelphia, PA 19104 USA.;Feng, L (通讯作者),Univ Penn, Dept Elect & Syst Engn, Philadelphia, PA 19104 USA.

OPTICS LETTERS, 2022; 47 (2): 214