充氩空芯光子晶体光纤中压力控制的三次谐波相位匹配。

Pressure-controlled phase matching to third harmonic in Ar-filled hollow-core photonic crystal fiber.

机构信息

Max Planck Institute for the Science of Light, Günther-Scharowsky-Strasse 1, 91058 Erlangen, Germany.

出版信息

Opt Lett. 2010 Sep 1;35(17):2922-4. doi: 10.1364/OL.35.002922.

DOI:10.1364/OL.35.002922

PMID:20808370

Abstract

We report tunable third-harmonic generation (THG) in an Ar-filled hollow-core photonic crystal fiber, pumped by broadband <2 microJ, 30 fs pulses from an amplified Ti:sapphire laser system. The overall dispersion is precisely controlled by balancing the negative dielectric susceptibility of the waveguide against the positive susceptibility of the gas. We demonstrate THG to a higher-order guided mode and show that the phase-matched UV wavelength is tunable by adjusting the gas pressure.

摘要

我们报告了在充氩空芯光子晶体光纤中可调谐的三次谐波产生（THG），该光纤由放大的钛宝石激光系统泵浦产生的宽带 <2 μJ、30 fs 脉冲。通过平衡波导的负介电常数与气体的正介电常数，整体色散得到精确控制。我们将 THG 转换到更高阶导模，并展示了通过调整气体压力可以调谐相位匹配的紫外波长。