Blue-IR hybrid laser technology

Furukawa Electric's Blue-IR hybrid laser is a hybrid laser by combination of a high-power blue oscillator equipped with a blue direct diode laser jointly developed with NICHIA CORPORATION and a near infrared (IR) single-mode fiber laser.

The following graph shows the light absorption rate of copper with respect to laser wavelength, with the horizontal axis representing the laser wavelength, and the vertical axis representing the light absorption rate of copper. When using a near infrared fiber laser, the light absorption rate is approximately 4% which requires the input of laser power with high energy density. However, this makes it difficult to achieve stable heat input, and processing defects such as spattering and blowholes occur.

With our newly-developed Blue-IR hybrid laser technology, a blue laser with excellent light absorption rate of 65% for copper is used for preheating, and the world's highest level of pure copper welding quality has been achieved by using a fiber laser for the main processing.

The Blue-IR hybrid laser focuses on improving the quality of copper laser welding.

The use of this Blue-IR hybrid laser in the manufacturing processes for lithium-ion batteries and motors, for which demand is expected to increase in the future due to the shift to EVs.
Blue-IR hybrid laser achieves the world's highest levels of quality, penetration depth, and processing speed, thereby contributing to improved productivity.