Abstract
Laser experiments were performed on buried, ridge-type channel waveguides in an 8 at. % thulium-doped, yttrium-gadolinium-lutetium codoped monoclinic double tungstate. A maximum slope efficiency of 70% and output powers up to 300 mW about 2.0 μm were obtained in a mirrorless laser resonator, by pumping with a Ti:sapphire laser near 800 nm. To the best of our knowledge, this result represents the most efficient 2 μm channel waveguide laser to date. Lasing is obtained at various wavelengths between 1810 nm and 2037 nm.
Original language | English |
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Pages (from-to) | 887-889 |
Number of pages | 3 |
Journal | Optics letters |
Volume | 37 |
Issue number | 5 |
DOIs | |
Publication status | Published - 1 Mar 2012 |
Keywords
- IOMS-APD: Active Photonic Devices
- Waveguides
- Thin film devices and applications
- Channeled
- Infrared and far-infrared lasers
- Integrated optics materials