The epitaxial structure and lateral layout of the laser bars were tailored to meet the application requirements. Reliable operation peak powers of 350W and 500W are demonstrated from laser bars with fill-factor FF=75% and resonator lengths 1.5mm and 2.0mm, respectively. Moreover, 60W at current 65A with lifetime <10.000h are presented. The power scaling with fill-factor enables a cost reduction ($/W) up to 35%.
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Agnieszka Pietrzak, Martin Zorn, Jens Meusel, Ralf Huelsewede, Juergen Sebastian, "Development of highly efficient laser bars emitting at around 1060 nm for medical applications," Proc. SPIE 10514, High-Power Diode Laser Technology XVI, 105140D (19 February 2018);