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Título
Femtosecond-laser-written superficial cladding waveguides in Nd:CaF 2 crystal
Autor(es)
Materia
Optical waveguides
Nd:CaF2 crystal
Femtosecond laser writing
Fecha de publicación
2017-07
Citación
Li, R., Nie, W., Lu, Q., Cheng, C., Shang, Z., Vázquez de Aldana, J. R., & Chen, F. (2017). Femtosecond-laser-written superficial cladding waveguides in Nd:CaF2 crystal. Optics & Laser Technology, 92, 163-167. https://doi.org/10.1016/j.optlastec.2017.01.026
Resumen
We report on the superficial cladding waveguides fabricated by direct femtosecond laser writing in Nd: CaF2 crystal with three different groups of parameters. The lowest propagation loss of waveguides has been determined to be 0.7 dB/cm at wavelength of 632.8 nm along TE polarization. The near fundamental modal distributions have been imaged through the end-face coupling technique. The guidance of the waveguides is found to possess low sensitivity on polarization of the probe light. By using a confocal microscope system, the micro-photoluminescence mappings and micro-fluorescence spectra are also obtained, which indicates the photoluminescence features of the Nd3+ ions are well preserved in the waveguide cores after direct femtosecond laser writing.
URI
ISSN
0030-3992
DOI
10.1016/j.optlastec.2017.01.026
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- ALF. Artículos [314]
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