Non-Destructive Identification of Weld-Boundary and Porosity Formation During Laser Transmission Welding by Using Optical Coherence Tomography. - Kanghae Kim; Pilun Kim; Jaeyul Lee; Suwon Kim; Sungjo Park; Soo Ho Choi; Junho Hwang; Jong Hoon Lee; Ho Lee; Ruchire Eranga Wijesinghe; Mansik Jeon; Jeehyun Kim (IEEE Access, 2018)