Highly efficient dual-grating 3-channel spectral beam combining of narrow-linewidth monolithic cw Yb-doped fiber amplifiers up to 5.5 kW

Strecker M, Ploetner M, Stutzki F, Walbaum T, Ehrhardt S, Benkenstein T, Zeitner U, Schreiber T, Eberhardt R, Tunnermann A, Stuhr U, Jung M, Ludewigt K (2019)

Publication Type: Conference contribution

Publication year: 2019

Journal

Proceedings of SPIE Society of Photo-optical Instrumentation Engineers (SPIE)

Publisher: SPIE

Book Volume: 10897

Conference Proceedings Title: Proceedings of SPIE - The International Society for Optical Engineering

Event location: San Francisco, CA, USA

ISBN: 9781510624368

DOI: 10.1117/12.2508674

Abstract

We present highly efficient three-channel dual-grating spectral beam combining with a combined signal output power of 5.5 kW at an excellent beam quality of M2 = 1.5. Three 2-kW all-fiber narrow-linewidth continuous-wave Ytterbium-doped fiber amplifiers at 1050 nm, 1070 nm and 1090 nm were combined using in-house fabricated polarizationindependent dielectric reflection gratings. The total combining efficiency was 94% at full power level, which is close to the expected value referred to the incorporated grating's efficiency in a dual-grating setup.

Involved external institutions

Fraunhofer-Institut für Angewandte Optik und Feinmechanik (IOF) / Fraunhofer Institute for Applied Optics and Precision Engineering DE Germany (DE) Rheinmetall Waffe Munition GmbH DE Germany (DE)

How to cite

APA:

Strecker, M., Ploetner, M., Stutzki, F., Walbaum, T., Ehrhardt, S., Benkenstein, T.,... Ludewigt, K. (2019). Highly efficient dual-grating 3-channel spectral beam combining of narrow-linewidth monolithic cw Yb-doped fiber amplifiers up to 5.5 kW. In Adrian L. Carter, Liang Dong (Eds.), Proceedings of SPIE - The International Society for Optical Engineering. San Francisco, CA, USA: SPIE.

MLA:

Strecker, Maximilian, et al. "Highly efficient dual-grating 3-channel spectral beam combining of narrow-linewidth monolithic cw Yb-doped fiber amplifiers up to 5.5 kW." Proceedings of the Fiber Lasers XVI: Technology and Systems 2019, San Francisco, CA, USA Ed. Adrian L. Carter, Liang Dong, SPIE, 2019.

BibTeX: Download