Daniel Jedrzejczyk

Publications (2)6.8 Total impact

• Article: Efficient high-power frequency doubling of distributed Bragg reflector tapered laser radiation in a periodically poled MgO-doped lithium niobate planar waveguide.

  Daniel Jedrzejczyk, Reiner Güther, Katrin Paschke, Woo-Jin Jeong, Han-Young Lee, Götz Erbert
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  ABSTRACT: We report on efficient single-pass, high-power second-harmonic generation in a periodically poled MgO-doped LiNbO3 planar waveguide using a distributed Bragg reflector tapered diode laser as a pump source. A coupling efficiency into the planar waveguide of 73% was realized, and 1.07 W of visible laser light at 532 nm was generated. Corresponding optical and electro-optical conversion efficiencies of 26% and 8.4%, respectively, were achieved. Good agreement between the experimental data and the theoretical predictions was observed.
  Optics Letters 02/2011; 36(3):367-9. · 3.40 Impact Factor
• Article: Second-harmonic-generation microsystem light source at 488 nm for Raman spectroscopy.

  Martin Maiwald, Daniel Jedrzejczyk, Alexander Sahm, Katrin Paschke, Reiner Güther, Bernd Sumpf, Götz Erbert, Günther Tränkle
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  ABSTRACT: A microsystem excitation light source emitting at 488 nm is presented. A direct single-pass nonlinear frequency conversion using a diode laser emission at 976 nm and a periodically poled lithium niobate waveguide crystal for efficient second-harmonic generation is demonstrated. This was realized on a micro-optical bench with a combined thermal management and a footprint of (25 mm x 5 mm). At 217 mW fundamental power a generated power of 56 mW at 488 nm with a conversion efficiency of 26% was achieved. With a power stability below 1%, this wavelength stabilized compact device is well suited for Raman spectroscopy.
  Optics Letters 02/2009; 34(2):217-9. · 3.40 Impact Factor