Compact Blue Light Source by Single-Pass Second Harmonic Generation of DBR Tapered Laser Radiation
J.-H. Park1, D. Jedrzejczyk2, D. Feise2, A. Maaßdorf2, K. Paschke2, T.-Y. Kang1, J.-H. Ha1, G.Y. Oh1, H.-N. Jeon3, B. Yim4, and H.-Y. Lee1
Published in:
IEEE Photonics Technol. Lett., vol. 26, no. 19, pp. 1936-1939 (2014).
Abstract:
We demonstrate a continuous-wave 460-nm compact visible laser module having a footprint of 75 mm × 25 mm × 25 mm. This blue light source is achieved through single-pass second harmonic generation with a distributed Bragg reflector tapered diode laser as a single-frequency pump source at ∼920 nm in a periodically poled MgO-doped lithium niobate crystal with a planar waveguide. The compact blue laser module reached an optical output power of 286 mW with the highest optical conversion efficiency of 11.6% at room temperature. The power stability of the blue light from the laser module is measured at an output power of 268 mW with a variation of ±3.5% during a period of 1 h.
1 Korea Electronics Technology Institute, Seongnam 463-816, Korea
2 Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Straße 4, D-12489 Berlin, Germany
3 Physical Sciences Inc., Suwon 442-160, Korea
4 WikiOptics, Suwon 443-270, Korea
Index Terms:
Nonlinear optics, frequency conversion, optical waveguides, second-harmonic generation (SHG), semiconductor laser.
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