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Optics Letters

Optics Letters


  • Vol. 32, Iss. 5 — Mar. 1, 2007
  • pp: 488–490

Lu, Gd codoped K Y ( W O 4 ) 2 : Yb epitaxial layers: towards integrated optics based on K Y ( W O 4 ) 2

Florent Gardillou, Yaroslav E. Romanyuk, Camelia N. Borca, René-Paul Salathé, and Markus Pollnau  »View Author Affiliations

Optics Letters, Vol. 32, Issue 5, pp. 488-490 (2007)

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Codoping K Y ( W O 4 ) 2 : Yb layers with optically inert Lu and Gd ions allows a large increase of the refractive index contrast with respect to K Y ( W O 4 ) 2 substrates. This paves the way for the realization of integrated optical circuits based on this very promising material. First riblike waveguide structures have been fabricated and propagation losses below 1 dB cm have been evaluated. A Y-junction with a splitting ratio close to 1:1 and additional losses of 1.4 dB has also been demonstrated.

© 2007 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(130.3130) Integrated optics : Integrated optics materials
(140.3380) Lasers and laser optics : Laser materials
(140.5680) Lasers and laser optics : Rare earth and transition metal solid-state lasers
(230.1360) Optical devices : Beam splitters
(230.7370) Optical devices : Waveguides

ToC Category:
Integrated Optics

Original Manuscript: August 17, 2006
Manuscript Accepted: December 4, 2006
Published: February 2, 2007

Florent Gardillou, Yaroslav E. Romanyuk, Camelia N. Borca, René-Paul Salathé, and Markus Pollnau, "Lu, Gd codoped KY(WO4)2:Yb epitaxial layers: towards integrated optics based on KY(WO4)2," Opt. Lett. 32, 488-490 (2007)

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