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Optics Letters

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  • Vol. 27, Iss. 21 — Nov. 1, 2002
  • pp: 1938–1940

Femtosecond micromachining of symmetric waveguides at 1.5 µm by astigmatic beam focusing

G. Cerullo, R. Osellame, S. Taccheo, M. Marangoni, D. Polli, R. Ramponi, P. Laporta, and S. De Silvestri  »View Author Affiliations


Optics Letters, Vol. 27, Issue 21, pp. 1938-1940 (2002)
http://dx.doi.org/10.1364/OL.27.001938


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Abstract

We report on a new spatial beam-shaping approach for fabrication of waveguides with a circular transverse profile by femtosecond laser pulses, using an astigmatic beam and controlling both beam waist and focal position in the tangential and sagittal planes. We apply this technique to write single-mode active waveguides at 1.5µm in Er:Yb-doped glass substrates. The experimental results are well described by a simple nonlinear absorption model.

© 2002 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(220.4000) Optical design and fabrication : Microstructure fabrication
(320.7110) Ultrafast optics : Ultrafast nonlinear optics

Citation
G. Cerullo, R. Osellame, S. Taccheo, M. Marangoni, D. Polli, R. Ramponi, P. Laporta, and S. De Silvestri, "Femtosecond micromachining of symmetric waveguides at 1.5 µm by astigmatic beam focusing," Opt. Lett. 27, 1938-1940 (2002)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-27-21-1938


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