Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • CLEO/Europe and EQEC 2011 Conference Digest
  • OSA Technical Digest (CD) (Optica Publishing Group, 2011),
  • paper CE3_2

Growth and characterization of highly Yb3+-doped KY(WO4)2 thin layers

Not Accessible

Your library or personal account may give you access

Abstract

Crystals of the monoclinic double tungstates KY(WO4)2 (= KYW), KGd(WO4)2, and KLu(WO4)2 are excellent laser host materials due to their high refractive indices on the order of 2, good thermal conductivity, and large transition cross-sections of rare-earth ions, in particular Yb3+, doped into these crystals. Yb3+-doped double tungstate thin layers enable lasing with a small quantum defect [1] and high slope efficiency [2], making them well suited for high-power lasers [3] and waveguide lasers [4]. Co-doping KYW:Yb3+ layers with appropriate amounts of Lu3+ and Gd3+ increases the refractive index contrast with respect to the undoped KYW substrate, thus reducing the required layer thickness for waveguiding, while simultaneously providing lattice matching between layer and substrate [5]. On the other hand, for thin-disk laser applications highly Yb3+-doped KYW layers are needed. This can be achieved by either growing KLu(WO4)2:Yb3+ layers on undoped KLu(WO4)2 substrates because of the similar ion radii of Yb3+ and Lu3+ [3] or co-doping a KYW:Yb3+ layer with Gd3+ for compensating the induced lattice mismatch with respect to the undoped KYW substrate.

© 2011 Optical Society of America

PDF Article
More Like This
Low-threshold and highly efficient Gd3+, Lu3+ co-doped KY(WO4)2: Yb3+ planar waveguide lasers

D. Geskus, S. Aravazhi, E. Bernhardi, C. Grivas, K. Wörhoff, and M. Pollnau
ATuB2 Advanced Solid-State Photonics (ASSL) 2010

Engineering of refractive index and doping level of KY1-x-y-zGdxLuyYbz(WO4)2 layers for a cladding-side-pumped channel waveguide laser

Shanmugam Aravazhi, Dimitri Geskus, Koop van Dalfsen, Sergio A. Vázquez-Córdova, Christos Grivas, Uwe Griebner, Sonia M. García-Blanco, and Markus Pollnau
CE_6_1 The European Conference on Lasers and Electro-Optics (CLEO/Europe) 2013

Broadly tunable and low-quantum-defect Yb3+-doped double tungstate channel waveguide lasers

D. Geskus, S. Aravazhi, K. Wörhoff, and M. Pollnau
CA7_4 The European Conference on Lasers and Electro-Optics (CLEO/Europe) 2011

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved