Frontiers in Physics (Sep 2021)

Enhanced Raman Spectra in Femtosecond Laser Inscribed Yb:YVO4 Channel Waveguides

  • Yi-Fei Bao,
  • Tao Liu,
  • Wei-Jin Kong,
  • Hao-Qi Luo,
  • Yong Liu,
  • Fei-Ran Liu,
  • Lin Cheng

DOI
https://doi.org/10.3389/fphy.2021.758071
Journal volume & issue
Vol. 9

Abstract

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The femtosecond laser writing with double-line technique was employed to fabricate buried channel waveguides with different widths in Yb:YVO4 crystal. Model profiles of the waveguides were captured using the endface coupling setup at the wavelength of 633 nm under TE and TM polarization. Furthermore, the confocal micro-Raman spectra in bulk and waveguide areas were studied at the wavelength of 633 nm. The enhanced Raman intensity were performed in waveguide areas.

Keywords