633 nm single-mode laser-diode module with PM fiber output
G. Blume1, D. Jedrzejczyk1, J. Pohl1, D. Feise1, A. Sahm1, B. Eppich1, C. Nölleke2, P. Leisching2, and K. Paschke1
Published in:
Proc. SPIE 10100, Photonics West, San Francisco, USA, Jan 28 - Feb 02, 1010018 (2017).
Abstract:
Several holographic and interferometric applications would benefit significantly from a diode laser based coherent light source near 633 nm. For this purpose a laser diode based on an AlGaAs/AlGaInP structure for emission in the red spectral range was developed. The laser chip features a ridge waveguide and a DBR surface grating at the rear side with a peak reflectivity at 633 nm. The laser was mounted in a butterfly-style package for temperature stabilization. The beam emitted by the laser diode was shaped with two cylindrical micro-lenses and passed through a custom-built CdMnTebased micro-optical isolator. The beam behind the isolator was coupled into a polarization maintaining (PM) singlemode fiber using an aspherical lens. The optical output power of the fiber was about 1.7 mW at 100 mA.
1 Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Straße 4, 12489 Berlin, Germany
2 TOPTICA Photonics AG, Lochhamer Schlag 19, 82166 Graefelfing, Germany
Keywords:
distributed Bragg reflector, diode laser, red-emitting, linewidth, coherence length, package, fiber port.
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