Optical characterization of femtosecond laser induced active channel waveguides in lithium fluoride crystals

I. Chiamenti, F. Bonfigli, A.S.L. Gomes, F. Michelotti, R.M. Montereali, H.J. Kalinowski

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Abstract

We successfully realized broad-band light-emitting color center waveguides buried in LiF crystals by using femtosecond laser pulses. The characterization of the waveguides was performed by optical microscopy, photoluminescence spectra, loss measurements and near-field profiling. The experimental results show that the direct-writing fabrication process induces low-index contrast active channel waveguides: their wavelength-dependent refractive index changes, estimated from 10-3 to 10-4 depending on the writing conditions, allow supporting few modes at visible and near-infrared wavelengths. © 2014 AIP Publishing LLC.
Original languageEnglish
Article number023108
Pages (from-to)-
JournalJournal of Applied Physics
Volume115
Issue number2
DOIs
Publication statusPublished - 14 Jan 2014
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Chiamenti, I., Bonfigli, F., Gomes, A. S. L., Michelotti, F., Montereali, R. M., & Kalinowski, H. J. (2014). Optical characterization of femtosecond laser induced active channel waveguides in lithium fluoride crystals. Journal of Applied Physics, 115(2), -. [023108]. https://doi.org/10.1063/1.4861636