Integrated planar and channel waveguide lasers in the KY(WO4)2 (= KYW) host material is a subject of heavy investigation. Waveguide lasers based on Yb3+-doped KYW with slope efficiencies as high as 82.3% and output powers of several hundreds of milli-Watts have demonstrated the potential for highly efficient integrated lasers in this material, as well as low thresholds [1, 2]. Recently, lasers based on Tm3+-doped KYW with planar and channel geometries reported maximum slope efficiencies of 13% and maximum output powers of 32 mW [3, 4]. The higher efficiencies of the lasers based on Yb3+ compared to the ones based on Tm3+ can partly be attributed to the absence of detrimental up-conversion effects in Yb3+. However, slope efficiencies of 44% and 68% in thulium-doped bulk KGd(WO4)2 crystals and also fiber lasers suggest that there is significant room for improvement in terms of slope efficiency in thulium-doped KYW [5, 6].

© 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 (ASSP) 2010

Microstructured Channel Waveguide Lasers in KY(WO4)2:Gd3+,Lu3+,Yb3+

D. Geskus, S. Aravazhi, C. Grivas, K. Wörhoff, and M. Pollnau
FWD3 Frontiers in Optics (FiO) 2010

High-power Yb- and Tm-doped Double Tungstate Channel Waveguide Lasers

K. van Dalfsen, D. Geskus, F. Ay, K. Wörhoff, S. Aravazhi, and M. Pollnau
C168 Conference on Lasers and Electro-Optics/Pacific Rim (CLEOPR) 2011


You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access Optica Member Subscription