Laser for solar cell processing

Mamba from Coherent is a diode-pumped, solid-state laser that delivers a combination of high reliability, long lifetime, and minimal maintenance downtime, and is primarily intended for high throughput materials processing applications such as edge deletion of solar panels and ITO patterning.

The Mamba from Coherent Inc. (Santa Clara, CA; www.coherent.com) is a 525 W (at 1064 nm), diode-pumped, solid-state laser that delivers a combination of high reliability, long lifetime, and minimal maintenance downtime, and is primarily intended for high throughput materials processing applications such as edge deletion of solar panels and ITO patterning. The reliability of the Mamba derives from several factors including PermAlign construction for drift-free, long term alignment of its resonator optics, pump diodes fabricated using Coherent's long lived AAA material, and indium-free hard solder pump diode packaging for extended lifetime. Furthermore, when pump diode replacement is finally required, the pump modules can easily be replaced in the field for minimal downtime and reduced cost of ownership.

The Mamba is configured as a compact laser head and separate power supply, simplifying integration into production machinery where space is a consideration. In addition, the laser is offered with a fiber delivery option. This 600 µm or 800 µm square cross section fiber is specifically designed to optimize process throughput for tasks such as edge deletion. In addition, Mamba boasts a number of other features that maximize throughput, process quality, and operational flexibility. These include Pulse OnDemand, which is a suite of features (including single shot and burst mode operation, and first pulse equalization) that make it possible to utilize every pulse produced by the laser. Plus, a patented, optical attenuator is integrated inside the main laser housing, and further facilitates process development and optimization.

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