Nanosecond diode laser at kilowatt power

Nanosecond diode laser at kilowatt power

by E. Mendez(a) , A. Leyva(a) , G. Viera(a)

(a) MONOCROM S.L., 6 Vilanoveta Street, 08800 Vilanova i la Geltrú, Barcelona, Spain

Published in CitySeerX


High Power Diode Lasers (HPDL) have become more and more important in the last few years. They are now used for a wide range of applications that include pumping of solid state or fibre lasers, material processing or medical applications. The reasons that explain their success are a good price per watt, a very high efficiency, easy control of the laser power and a compact size. However, the poor functioning of HPDL in pulse mode has been an important barrier which has limited the use of HPDL mainly to applications in continuous wave (CW) mode. Lasers are normally modulated rather than operated CW, because the pulse format can be tailored to a specific application. The use of HPDL lasers is normally limited to CW due to their usual mounting process. HPDL are usually mounted using a soldering process in which the laser diode bar is soldered between two copper blocks which serve both as electrodes and heat sinks 1. The thermal expansion mismatch between the laser bar material (GaAs) and the copper heat sinks causes a fatigue effect on solder and bar material when the laser is operated in pulse operation (on/off cycles or quasi-continuous wave QCW). Monocrom SL has developed a mounting technology for HPDL which eliminates the use of solder between the laser diode and the heat sink

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Analysis of the imaging method for assessment of the smile of laser diode bars – Luis Martí-lópez, José A. Ramos-de-campos, Walter D. Furlan – 2009


1. Interferometric method for characterizing the smile of laser diode bars,” Opt – Martí-López, Ramos-de-Campos, et al. – 2007

2. New features from non-soldered clamp-mounted diode laser bars – Viera, Galan, et al. – 2005