Abstract

We report on individual wavelength locking of a multiplet of 100-μm broad-area laser diode emitters arranged on a 50% fill-factor bar by means of a single external multi-laser cavity using an ultra-narrowband thin-film filter as a dispersive optical element. The achieved wavelength-locked output power is 216 W, corresponding to an electrical-to-optical conversion efficiency of about 49.7%. The 45 emitters of the laser diode bar are stabilized within a spectral range of about 6.4 nm. Our approach is suited for killowatt-class dense wavelength beam combining of direct diode lasers.

© 2015 Optical Society of America

Thin-film filter wavelength-stabilized, grating combined, high-brightness kW-class direct diode laser

Matthias Haas, Simon Rauch, Simon Nagel, Lukas Irmler, Thomas Dekorsy, and Hagen Zimer
Opt. Express 25(15) 17657-17670 (2017)

Spectral linewidth narrowing of broad-area blue diode bar in V-shape external Talbot cavity

Parashu R. Nyuaupane, Patrick L. Likamwa, and Yehuda Braiman
Opt. Lett. 47(11) 2802-2805 (2022)

Generation of blue light by sum-frequency generation of a spectrally combined broad-area diode laser array

Zhanda Zhu, Menghua Jiang, Haoyang Yu, Yongling Hui, Hong Lei, and Qiang Li
Opt. Lett. 41(20) 4712-4714 (2016)

Simultaneous frequency stabilization, wavelength multiplexing and improvement of beam quality using a self-optimizing external cavity diode laser

Stefan Hengesbach, Sarah Klein, Martin Traub, and Ulrich Witte
Opt. Lett. 41(3) 595-598 (2016)

Suppression of cross coupling in an external resonator for a diode laser bar with 19 single emitters

Sarah Klein, Stefan Hengesbach, Thomas Westphalen, Martin Traub, and Dieter Hoffmann
Opt. Lett. 40(4) 641-644 (2015)