26 February 2013 Brightness-enhanced high-efficiency single emitters for fiber laser pumping
Author Affiliations +
Reliable single emitters delivering <10W in the 9xx nm spectral range, are common energy sources for fiber laser pumps. The brightness (radiance) of a single emitter, which connotes the angular concentration of the emitted energy, is just as important a parameter as the output power alone for fiber coupling applications. We report on the development of high-brightness single emitters that demonstrate <12W output with 60% wall-plug efficiency and a lateral emission angle that is compatible with coupling into 0.15 NA delivery fiber. Using a purpose developed active laser model, simulation of far-field patterns in the lateral (slow) axis can be performed for different epitaxial wafer structures. By optimizing both the wafer and chip designs, we have both increased the device efficiency and improved the slow-axis divergence in high-current operation. Device reliability data are presented. The next-generation emitters will be integrated in SCD's NEON fiber pump modules to upgrade the pump output towards higher ex-fiber powers with high efficiency.
© (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Dan Yanson, Dan Yanson, Noam Rappaport, Noam Rappaport, Moshe Shamay, Moshe Shamay, Shalom Cohen, Shalom Cohen, Yuri Berk, Yuri Berk, Genadi Klumel, Genadi Klumel, Yaroslav Don, Yaroslav Don, Ophir Peleg, Ophir Peleg, Moshe Levy, Moshe Levy, "Brightness-enhanced high-efficiency single emitters for fiber laser pumping ", Proc. SPIE 8605, High-Power Diode Laser Technology and Applications XI, 860505 (26 February 2013); doi: 10.1117/12.2003838; https://doi.org/10.1117/12.2003838


High-brightness 800nm fiber-coupled laser diodes
Proceedings of SPIE (March 11 2014)
High-power 1060-nm InGaAs/GaAs single-mode laser diodes
Proceedings of SPIE (March 16 2005)
WDM laser development at Ortel
Proceedings of SPIE (April 30 1996)

Back to Top