Femtosecond-irradiation-induced refractive-index changes and channel waveguiding in bulk Ti3+: Sapphire

V. Apostolopoulos; L. Laversenne; T. Colomb; C. Depeursinge; R. P. Salathé; M. Pollnau; R. Osellame; G. Cerullo; P. Laporta

doi:10.1063/1.1781737

Femtosecond-irradiation-induced refractive-index changes and channel waveguiding in bulk Ti³⁺: Sapphire

V. Apostolopoulos^*, L. Laversenne, T. Colomb, C. Depeursinge, R. P. Salathé, M. Pollnau, R. Osellame, G. Cerullo, P. Laporta

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

115 Scopus citations

Abstract

Refractive-index changes and channel waveguides induced by femtosecond irradiation in Ti³⁺-doped sapphire were analyzed. It was observed that doping the sapphire crystal reduced the threshold for creating structural changes, which enabled the writing of waveguide structures. It was found that the waveguides were formed in those regions of the doped sapphire sample that were adjacent to the upper and lower tips of the regions damaged by femtosecond irradiation. It was also observed that the damage induced in the sapphire created an amorphous or polycrystalline region in the irradiated area resulting in a decrease of the refractive index.

Original language	English (US)
Pages (from-to)	1122-1124
Number of pages	3
Journal	Applied Physics Letters
Volume	85
Issue number	7
DOIs	https://doi.org/10.1063/1.1781737
State	Published - Aug 16 2004
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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abstract = "Refractive-index changes and channel waveguides induced by femtosecond irradiation in Ti3+-doped sapphire were analyzed. It was observed that doping the sapphire crystal reduced the threshold for creating structural changes, which enabled the writing of waveguide structures. It was found that the waveguides were formed in those regions of the doped sapphire sample that were adjacent to the upper and lower tips of the regions damaged by femtosecond irradiation. It was also observed that the damage induced in the sapphire created an amorphous or polycrystalline region in the irradiated area resulting in a decrease of the refractive index.",

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AU - Apostolopoulos, V.

AU - Laversenne, L.

AU - Colomb, T.

AU - Depeursinge, C.

AU - Salathé, R. P.

AU - Pollnau, M.

AU - Osellame, R.

AU - Cerullo, G.

AU - Laporta, P.

PY - 2004/8/16

Y1 - 2004/8/16

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AB - Refractive-index changes and channel waveguides induced by femtosecond irradiation in Ti3+-doped sapphire were analyzed. It was observed that doping the sapphire crystal reduced the threshold for creating structural changes, which enabled the writing of waveguide structures. It was found that the waveguides were formed in those regions of the doped sapphire sample that were adjacent to the upper and lower tips of the regions damaged by femtosecond irradiation. It was also observed that the damage induced in the sapphire created an amorphous or polycrystalline region in the irradiated area resulting in a decrease of the refractive index.

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JF - Applied Physics Letters

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ER -

Femtosecond-irradiation-induced refractive-index changes and channel waveguiding in bulk Ti³⁺: Sapphire

Abstract

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