[CFA17G] Interferometric Sensing

[CFA17G-02] An instance hole measurement using a low-coherence interferometer with a high repetition rate during laser-welding process

*Neisei HAYASHI¹, Takuma FUJITA², Takahiro DEGUCHI², Ryo NOMURA², Hiroshi HASEGAWA², Takeshi MAKINO³, Takahiro HASHIMOTO³, Hideaki FURUKAWA³, Naoya WADA³, Katsuhiro ISHII¹ (1. GPI (Japan), 2. Nadex Products Co., Ltd. Laser R&D Center (Japan), 3. NICT (Japan))

[Presentation Style] Onsite

The shape of an instance hole (keyhole) created via a high-power laser was measured using a low-coherence interferometer with a 10-MHz repetition rate, a 10-um absolute spatial resolution and a 5-mm measurement range.