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  • 2013 Conference on Lasers and Electro-Optics - International Quantum Electronics Conference
  • (Optica Publishing Group, 2013),
  • paper CFIE_7_2

Intra-cavity extreme ultraviolet light source based on a mode locked Ti:sapphire oscillator with 9.4 MHz repetition rate

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Abstract

Sources based on high harmonic generation (HHG) deliver line and/or continuum radiation up to few keV with excellent spatial characteristic and repetition rate up to few kHz. These sources have been successfully applied for x-ray absorption spectroscopy with sub-20 fs temporal resolution. However, for time-resolved photoelectron spectroscopy there is a need for pulsed EUV sources with MHz repetition rate. The intensity achieved at the output of an ultrafast Ti:sapphire lasers is too low for high harmonic generation. So for realizing MHz repetition rate EUV sources the peak power of femtosecond Ti:sapphire based oscillators have been enhanced by either an external enhancement cavity [1] or plasmonic field enhancement with nanostructured samples [2]. In this contribution we report on a new approach, namely the intracavity high harmonic generation in a Ti:sapphire oscillator with repetition rate of 9.4 MHz [3]. This rather simple intra-cavity EUV source will provide new opportunities in spectroscopy.

© 2013 IEEE

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