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Oscillations In An LC Circuit01:30

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An idealized LC circuit of zero resistance can oscillate without any source of emf by shifting the energy stored in the circuit between the electric and magnetic fields. In such an LC circuit, if the capacitor contains a charge q before the switch is closed, then all the energy of the circuit is initially stored in the electric field of the capacitor. This energy is given by
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20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
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Dual-comb thin-disk oscillator.

Kilian Fritsch1, Tobias Hofer2, Jonathan Brons3,4

  • 1Helmut-Schmidt-Universität/Universität der Bundeswehr Hamburg, Holstenhofweg 85, D-22043, Hamburg, Germany. kilian.fritsch@hsu-hh.de.

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Summary
This summary is machine-generated.

We developed a high-power, passive dual-comb laser system using thin-disk technology. This breakthrough enables practical applications and frequency conversion into deep UV and VUV ranges.

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Area of Science:

  • Laser Physics
  • Spectroscopy

Background:

  • Traditional dual-comb spectroscopy (DCS) relies on two independent, low-power lasers, limiting practical use and frequency conversion.
  • Existing systems face challenges in achieving high power output and stability for advanced applications.

Purpose of the Study:

  • To report a novel, high-power, fully passive dual-comb laser system.
  • To demonstrate its application in direct frequency comb spectroscopy.
  • To overcome limitations of previous DCS systems for broader implementation.

Main Methods:

  • Utilized a Yb:YAG thin-disk laser architecture for a dual-comb system.
  • Achieved a fully passive design, eliminating the need for active synchronization.
  • Leveraged shared cavity components for enhanced mutual stability.

Main Results:

  • Generated a dual-comb system with peak power of 1.2 MW and average power of 15 W, exceeding previous systems by over an order of magnitude.
  • Demonstrated easy adjustment of the repetition frequency difference during operation.
  • Obtained resolved individual comb lines from a 10 ms time-domain signal without active stabilization.

Conclusions:

  • The developed passive, high-power dual-comb laser system significantly advances DCS capabilities.
  • This technology facilitates practical implementations and enables frequency conversion into deep UV and VUV spectral ranges.
  • The system's high power, stability, and ease of operation pave the way for new spectroscopic applications.