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  • Received: Jul. 14, 2020

    Accepted: Dec. 24, 2020

    Posted: Apr. 2, 2021

    Published Online: Apr. 2, 2021

    The Author Email: Jörg Körner (joerg.koerner@uni-jena.de)

    DOI: 10.1017/hpl.2020.53

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    Jörg Körner, Venkatesan Jambunathan, Fangxin Yue, Jürgen Reiter, Ondřej Slezák, Petr Navrátil, Samuel Paul David, Antonio Lucianetti, Joachim Hein, Tomáš Mocek, Malte C. Kaluza. Diode-pumped, electro-optically Q-switched, cryogenic Tm:YAG laser operating at 1.88 μm[J]. High Power Laser Science and Engineering, 2021, 9(1): 01000e11

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High Power Laser Science and Engineering, Vol. 9, Issue 1, 01000e11 (2021)

Diode-pumped, electro-optically Q-switched, cryogenic Tm:YAG laser operating at 1.88 μm

Jörg Körner1,2,3,*, Venkatesan Jambunathan1, Fangxin Yue1, Jürgen Reiter2,3, Ondřej Slezák1, Petr Navrátil1, Samuel Paul David1, Antonio Lucianetti1, Joachim Hein2,3, Tomáš Mocek1, and Malte C. Kaluza2,3

Author Affiliations

  • 1HiLASE Centre, Institute of Physics of the Czech Academy of Sciences, Dolní Břežany, Czech Republic
  • 2Institute of Optics and Quantum Electronics, Friedrich Schiller University Jena, Jena, Germany
  • 3Helmholz Institute Jena, Jena, Germany

Abstract

We present a diode-pumped, electro-optically Q-switched Tm:YAG laser with a cryogenically cooled laser crystal at 120 K. Output pulses of up to 2.55 mJ and 650 ns duration were demonstrated in an actively Q-switched configuration with a repetition rate of 1 Hz. By using cavity dumping the pulse duration was shortened to 18 ns with only a slightly lower output energy of 2.22 mJ. Furthermore, using a simplified rate equation model, we discuss design constraints on the pump fluence in a pulse pump approach for Tm:YAG to maximize the energy storage capability at a given pump power.

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