Blue NUBURU high power laser with 650 W for laser material processing

High Power Blue Lasers AO-650

The 450 nm laser AO-650 is a water-cooled diode laser with 650 W output power. The diodes are coupled into a 400µm fiber with a QBH termination. The laser operates in cw mode and can also be modulated with up to 500 Hz. Especially suitable for battery production and because the copper welding with lasers.

Properties of the blue AO-650 laser

This new generation of blue laser diodes was developed for micro and macro material processing of copper and its alloys as well as for nobel metals. Several high reflective metals have a limited absorption in the IR and the green wavelength. In this spectral width the blue wavelength has significant advantages.

By a microscopic and macroscopic inspection of the welding spot the homogeneous liquid phase of the weld pool shows a more wax-like behaviour than the common well known one of metals.

In all types of welding, a possible spatter-free machining process is of great importance. This applies to the actual welding as well as LMD wel-
ding and drilling already with a powerfrom 200 W for the NUBURU AO-200. With the 650 W version, significantly higher welding depths are
achievable and thanks to the beam parameter product of < 30 mm * mrad, they can be called unique in the market.

AO-650 Optical Specifications	Values
Wavelength (in nm)	450
Bandwidth (in nm)	10
Output Power (in W)	650
Power Adjustment (in %)	0 - 100
Power Stability (in %)	< 3
Fiber Core Diameter (in µm)	400
Fiber Numerical Aperture (in NA)	0.22
Beam Product Parameter BPP (in mm * mrad)	< 30
Standard Fiber Length (in m)	5
Connector Type	QBH

Advantages of High Power Blue Lasers (compared to IR lasers)

The application-oriented platform of blue high-power lasers will be changing the metal welding of non-ferrous metals, as well as the additive 
manufacturing production decisively.

•     Significantly higher absorption: the energy transfer of blue lasers is 2 to 20 times higher as for most materials
•     Increased throughput: blue lasers deliver 3 to 10 times faster material processing speeds
•     Higher precision, resolution and manufacturing quality due to wavelength-dependent, improved focusability
•     Better manufacturing quality due to spatter-free performance in material welding

Applications for the blue laser AO-650

The advantages of the blue wavelength are especially the spatter-free welding of copper and dissimilar metals (Cu, SS, Al, Ni).

•     micro material processing
•     welding batterieles (i.e. foils, tabs,..)
•     welding of electric/electronic components
•     additive manufacturing and surface structuring

More information in the Nuburu White Paper.