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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 22, Iss. 13 — Jul. 1, 1997
  • pp: 988–990

Performance of a low-loss pulsed-laser-deposited Nd:Gd3 Ga5O12 waveguide laser at 1.06 and 0.94 μm

C. L. Bonner, A. A. Anderson, R. W. Eason, D. P. Shepherd, D. S. Gill, C. Grivas, and N. Vainos  »View Author Affiliations


Optics Letters, Vol. 22, Issue 13, pp. 988-990 (1997)
http://dx.doi.org/10.1364/OL.22.000988


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Abstract

We report the laser performance of a low-propagation-loss neodymium-doped Gd3Ga5O12 (Nd:GGG) waveguide fabricated by pulsed-laser deposition. An 8- μm -thick crystalline Nd:GGG film grown upon an undoped Y3Al5O12 substrate lases at 1.060 and 1.062 µm when pumped by a Ti:sapphire laser operating at 740 or 808nm.Using a 2.2% output coupler, we observed a 1060-nm laser threshold of 4mW and a slope efficiency of 20%. Laser action was also achieved, for what we believe is the first time in Nd:GGG, on the quasi-three-level 937-nm transition. With a 2% output coupler at this wavelength a laser threshold of 17mW and a 20% slope efficiency were obtained. This demonstration of low propagation loss combined with the fact that these waveguides have a very high numerical aperture (0.75) makes pulsed-laser-deposited thin films attractive for high-power diode-pumped devices.

© 1997 Optical Society of America

Citation
C. L. Bonner, A. A. Anderson, R. W. Eason, D. P. Shepherd, D. S. Gill, C. Grivas, and N. Vainos, "Performance of a low-loss pulsed-laser-deposited Nd:Gd3 Ga5O12 waveguide laser at 1.06 and 0.94 μm," Opt. Lett. 22, 988-990 (1997)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-22-13-988


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