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Compact 35μm fiber coupled diode laser module based on dense wavelength division multiplexing of NBA mini-bars

: Witte, U.; Traub, M.; Meo, A. di; Rubel, D.; Hamann, M.; Hengesbach, S.; Hoffmann, D.

Postprint urn:nbn:de:0011-n-3829895 (1.4 MByte PDF)
MD5 Fingerprint: 3dd09b84c087aef78e68a60dc6821b65
Copyright Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Erstellt am: 8.4.2016

Zediker, M.S. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
High-Power Diode Laser Technology and Applications XIV : San Francisco, California, February 2016
Bellingham, WA: SPIE, 2016 (Proceedings of SPIE 9733)
Paper 97330H, 12 S.
Conference "High-Power Diode Laser Technology and Applications" <14, 2016, San Francisco/Calif.>
Konferenzbeitrag, Elektronische Publikation
Fraunhofer ILT ()

We present a compact, modular and cross talk free approach for dense wavelength division multiplexing of high power diode lasers based on ultra-steep dielectric filters. The mini bars consist of 5 narrow stripe broad area emitters with a beam parameter product in the range of 2 mm mrad and a wavelength spacing of 2.5 nm between 2 adjacent emitters. Experimental results for fiber coupling (35 μm core diameter, NA < 0.2) of internally and externally stabilized diode lasers are presented. Optical losses are analyzed and alternative optical designs to overcome the current limitations of the setup are discussed.