The newest commercially available Fibre Array Package (FAP) diode lasers from Coherent deliver the highest efficiency in the industry today
Now available at 940 nm and 980 nm, these new generation FAPs deliver 40W of CW power through an 800um fiber bundle with a numerical aperture of <0.11.
These FAPs are conduction cooled and boast a wall-plug efficiency (WPE) 50%, which is significantly higher than the 35% WPE of earlier generation FAPs.
These FAPs are the most recent addition to the FAP family, which boasts an installed base in excess of ten thousand lasers and proven product performance of more than five years.
This high-efficiency FAP is first in a series of high-brightness products being developed that utilize high-efficiency epitaxy bars.
The high efficiency offers the customer several important benefits.
First, the high efficiency lowers the power supply requirements of the FAP itself, resulting in reduced system cost, size and weight.
Second, the high efficiency of the FAP reduces the amount of dissipated heat, minimizing the number and/or power of thermo-electric coolers (TECs) required in the system, again reducing the overall system power requirements and cost.
A third benefit of the new FAP's high efficiency is increased lifetime, due to decreased junction temperature rise of the device.
The new generation 940nm and 980nm FAP products are primarily targeted at medical applications and fibre-laser pumping.
Medical uses include therapeutic applications in dermatology and surgery, where these FAPs enable new developments in laser-enabled cardiac surgery.
As pump lasers, these new lasers are also ideal for both erbium- and ytterbium-doped fibre lasers.
