Translator Disclaimer
13 March 2015 Assessment of high-power kW-class single-diode bars for use in highly efficient pulsed solid state laser systems
Author Affiliations +
Abstract
In this work, we present measurements of efficiency-optimized 940 nm diode laser bars with long resonators that are constructed with robustly passivated output facets at the Ferdinand-Braun-Institut (FBH). The measurements were performed at room temperature on a test bench developed at HiLASE Centre, as a function of operating condition. The single-diode bars generated < 1.0 kW when tested with 1 ms pulses at 1-10Hz operating frequency, corresponding to < 1 J per pulse. The maximum electrical-to-optical efficiency was < 60 %, with operating efficiency at 1 kW of < 50%, limited by the ~ 200 μΩ resistance of the bar packaging. In addition, slow axis divergence at 1 kW was below 6° FWHM and spectral width at 1 kW was below 7 nm FWHM, as needed for pumping Yb-doped solid state amplifier crystals.
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Antonio Lucianetti, Jan Pilar, Alina Pranovich, Martin Divoky, Tomas Mocek, K. Ertel, Helena Jelinkova, P. Crump, C. Frevert, R. Staske, Götz Erbert, and Günther Traenkle "Assessment of high-power kW-class single-diode bars for use in highly efficient pulsed solid state laser systems", Proc. SPIE 9348, High-Power Diode Laser Technology and Applications XIII, 934811 (13 March 2015); https://doi.org/10.1117/12.2077558
PROCEEDINGS
7 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

Fiber-coupled air-cooled high-power diode laser systems
Proceedings of SPIE (February 12 2008)
12-KW high-power diode–pumped laser module
Proceedings of SPIE (January 25 2005)
6.5-kW high-power diode-pumped laser module
Proceedings of SPIE (June 20 2004)

Back to Top