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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 23 — Nov. 7, 2011
  • pp: 23029–23035

Thermal optimization of second harmonic generation at high pump powers

Alexander Sahm, Mirko Uebernickel, Katrin Paschke, Götz Erbert, and Günther Tränkle  »View Author Affiliations

Optics Express, Vol. 19, Issue 23, pp. 23029-23035 (2011)

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We measure the temperature distribution of a 3 cm long periodically poled LiNbO3 crystal in a single-pass second harmonic generation (SHG) setup at 488 nm. By means of three resistance heaters and directly mounted Pt100 sensors the crystal is subdivided in three sections. 9.4 W infrared pump light and 1.3 W of SHG light cause a de-homogenized temperature distribution of 0.2 K between the middle and back section. A sectional offset heating is used to homogenize the temperature in those two sections and thus increasing the conversion efficiency. A 15% higher SHG output power matching the prediction of our theoretical model is achieved.

© 2011 OSA

OCIS Codes
(140.2020) Lasers and laser optics : Diode lasers
(140.6810) Lasers and laser optics : Thermal effects
(190.2620) Nonlinear optics : Harmonic generation and mixing
(140.3515) Lasers and laser optics : Lasers, frequency doubled

ToC Category:
Nonlinear Optics

Original Manuscript: July 26, 2011
Revised Manuscript: August 26, 2011
Manuscript Accepted: August 26, 2011
Published: October 28, 2011

Alexander Sahm, Mirko Uebernickel, Katrin Paschke, Götz Erbert, and Günther Tränkle, "Thermal optimization of second harmonic generation at high pump powers," Opt. Express 19, 23029-23035 (2011)

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  1. M. Maiwald, D. Jedrzejczyk, A. Sahm, K. Paschke, R. Güther, B. Sumpf, G. Erbert, and G. Tränkle, “Second-harmonic-generation microsystem light source at 488 nm for Raman spectroscopy,” Opt. Lett. 34(2), 217–219 (2009). [CrossRef] [PubMed]
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