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PreprintCC BY 4.0arXiv

Optical design for implementing non-collinear circularly polarized high harmonic generation in an enhancement cavity

  • Pranshu Dave
  • Thierry Auguste
  • Olivier Girard
  • Thierry Ruchon
  • David Bresteau
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Abstract

We introduce an original optical cavity design intended to efficiently output-couple extreme ultraviolet (XUV) light produced via cavity-enhanced high harmonic generation (CE-HHG). It supports the amplification of oppositely circularly polarized modes, crossing with a small angle in the high finesse cavity, where circularly polarized HHG scheme (NCP-HHG) will be implemented. We present an analytical model, numerical simulations, and experimental results obtained with a low-power continuous (CW) laser, demonstrating the strong potential of the cavity as an efficient XUV output coupling method. In particular, it is well suited for producing the 7th harmonic (H7) from an Ytterbium frequency comb at 8.4 eV, which is of particular interest for precision nuclear spectroscopy of Thorium.

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Cite

BibTeXRIS
BibTeX
@misc{dave2026optical,
  title = {{Optical design for implementing non-collinear circularly polarized high harmonic generation in an enhancement cavity}},
  author = {Pranshu Dave and Thierry Auguste and Olivier Girard and Thierry Ruchon and David Bresteau},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.10235},
  eprint = {2609.10235},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.10235},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Optical design for implementing non-collinear circularly polarized high harmonic generation in an enhancement cavity
AU  - Pranshu Dave
AU  - Thierry Auguste
AU  - Olivier Girard
AU  - Thierry Ruchon
AU  - David Bresteau
PY  - 2026
DA  - 2026/09/09
PB  - arXiv
DO  - 10.48550/arxiv.2609.10235
UR  - https://arxiv.org/abs/2609.10235
AB  - We introduce an original optical cavity design intended to efficiently output-couple extreme ultraviolet (XUV) light produced via cavity-enhanced high harmonic generation (CE-HHG). It supports the amplification of oppositely circularly polarized modes, crossing with a small angle in the high finesse cavity, where circularly polarized HHG scheme (NCP-HHG) will be implemented. We present an analytical model, numerical simulations, and experimental results obtained with a low-power continuous (CW) laser, demonstrating the strong potential of the cavity as an efficient XUV output coupling method. In particular, it is well suited for producing the 7th harmonic (H7) from an Ytterbium frequency comb at 8.4 eV, which is of particular interest for precision nuclear spectroscopy of Thorium.
ER  -