4 March 2013 Power blue and green laser diodes and their applications
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Proceedings Volume 8640, Novel In-Plane Semiconductor Lasers XII; 86400G (2013) https://doi.org/10.1117/12.2006220
Event: SPIE OPTO, 2013, San Francisco, California, United States
Abstract
InGaN based green laser diodes with output powers up to 50mW are now well established for variety of applications ranging from leveling to special lighting effects and mobile projection of 12lm brightness. In future the highest market potential for visible single mode profile lasers might be laser projection of 20lm. Therefore direct green single-mode laser diodes with higher power are required. We found that self heating was the limiting factor for higher current operation. We present power-current characteristics of improved R and D samples with up to 200mW in cw-operation. An optical output power of 100mW is reached at 215mA, a current level which is suitable for long term operation. Blue InGaN laser diodes are also the ideal source for phosphor based generation of green light sources of high luminance. We present a light engine based on LARP (Laser Activated Remote Phosphor) which can be used in business projectors of several thousand lumens on screen. We discuss the advantages of a laser based systems in comparison with LED light engines. LARP requires highly efficient blue power laser diodes with output power above 1W. Future market penetration of LARP will require lower costs. Therefore we studied new designs for higher powers levels. R and D chips with power-current characteristics up to 4W in continuous wave operation on C-mount at 25°C are presented.
© (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Thomas Hager, Thomas Hager, Uwe Strauß, Uwe Strauß, Christoph Eichler, Christoph Eichler, Clemens Vierheilig, Clemens Vierheilig, Sönke Tautz, Sönke Tautz, Georg Brüderl, Georg Brüderl, Bernhard Stojetz, Bernhard Stojetz, Teresa Wurm, Teresa Wurm, Adrian Avramescu, Adrian Avramescu, André Somers, André Somers, Jelena Ristic, Jelena Ristic, Sven Gerhard, Sven Gerhard, Alfred Lell, Alfred Lell, Stefan Morgott, Stefan Morgott, Oliver Mehl, Oliver Mehl, } "Power blue and green laser diodes and their applications", Proc. SPIE 8640, Novel In-Plane Semiconductor Lasers XII, 86400G (4 March 2013); doi: 10.1117/12.2006220; https://doi.org/10.1117/12.2006220
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