High-power broad area (BA) laser diodes in the NIR around 1500nm become more and more interesting for material processing, medical and security applications, and pumping of crystals to realise solid state lasers. Efficient light coupling is a stringent requirement in all these applications and necessitates lasers with a narrow and preferably symmetric optical far-field

1480nm InGaAsP large optical cavity broad-area laser diodes have been developed and optimized for pulsed and CW operation. The optical output powers at 20 degrees C are 18 W and 3.7 W, respectively. In accelerated ageing tests no noticeable degradation was observed

No abstract

 Users may download and print one copy of any publication from the public portal for the purpose of private study or research.  You may not further distribute the material or use it for any profit-making activity or commercial gain  You may freely distribute the URL identifying the publication in the public portal If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.