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Characterization of ion implanted waveguides in Nd:YAG

Field, S.J., Hanna, D.C., Shepherd, D.P., Tropper, A.C., Zhang, L., Chandler, P.J. and Townsend, P.D. (1991) Characterization of ion implanted waveguides in Nd:YAG Journal of Applied Physics, 69, (6), pp. 3440-3446. (doi:10.1063/1.348962).

Record type: Article


Ion implantation into Nd:YAG has been used to produce waveguides which are capable of supporting laser action. The refractive index profiles have been characterized as a function of ion dose and energy, implant temperature, and subsequent thermal annealing. Transmission losses down to 1.2 dB/cm have been obtained in the optimized waveguides. There is a temperature independent index enhancement of ~0.15% in the electronic stopping (guiding) region. The nuclear collision damage is temperature dependent, and shows an initial index increase ~0.3% for dose 1x10^16 ions/cm^2), but a subsequent decrease of up to several percent, which forms an optical barrier, as has been observed in many other crystalline materials. The best mode confinement and attenuation is obtained by utilizing the low dose nuclear index enhancement produced by several equally spaced implants (multiple energy) to give a broad well with Deltan ~ 0.25%. Several unusual features of the profiles are reported and discussed.

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Published date: 1991


Local EPrints ID: 78550
ISSN: 0021-8979
PURE UUID: 80ae9f38-2a8b-4a0c-a6f1-51f08ea407db
ORCID for D.P. Shepherd: ORCID iD

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Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:23

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Author: S.J. Field
Author: D.C. Hanna
Author: D.P. Shepherd ORCID iD
Author: A.C. Tropper
Author: L. Zhang
Author: P.J. Chandler
Author: P.D. Townsend

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