Efficient generation of 509 nm light by sum-frequency mixing between two tapered diode lasers

OPTICS COMMUNICATIONS

卷:339

Article

Tawfieq, Mahmoud¹  Jensen, Ole Bjarlin¹  Hansen, Anders Kragh¹  Sumpf, Bernd²  Paschke, Katrin²  Andersen, Peter E.¹ 

[1] Tech Univ Denmark, DTU Foton, Dept Photon Engn, DK-4000 Roskilde, Denmark

[2] Leibniz Inst Hochstfrequenztech, Ferdinand Braun Inst, D-12389 Berlin, Germany

关键词: Diode lasers;    Sum frequency generation;    Tapered lasers;    Visible lasers;   

DOI  :  10.1016/j.optcom.2014.11.078

来源: Elsevier

【 摘 要 】

We demonstrate a concept for visible laser sources based on sum-frequency generation of beam combined tapered diode lasers. In this specific case, a 1.7 W sum-frequency generated green laser at 509 nm is obtained, by frequency adding of 6.17W from a 978 nm tapered diode laser with 8.06W from a 1063 nm tapered diode laser, inside a periodically poled MgO doped lithium niobate crystal. This corresponds to an optical to optical conversion efficiency of 12.1%. As an example of potential applications, the generated nearly diffraction-limited green light is used for pumping a Ti:sapphire laser, thus demonstrating good beam quality and power stability. The maximum output powers achieved when pumping the Ti:sapphire laser are 226 mW (CW) and 185 mW (mode-locked) at 1.7W green pump power. The optical spectrum emitted by the mode-locked Ti:sapphire laser shows a spectral width of about 54 nm (FWHM), indicating less than 20 fs pulse width. (C) 2014 Elsevier B.V. All rights reserved.

【 授权许可】

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