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Optics Letters

Optics Letters


  • Vol. 25, Iss. 19 — Oct. 1, 2000
  • pp: 1433–1435

Ion-exchanged tapered-waveguide laser in neodymium-doped BK7 glass

S. J. Hettrick, J. I. Mackenzie, R. D. Harris, J. S. Wilkinson, D. P. Shepherd, and A. C. Tropper  »View Author Affiliations

Optics Letters, Vol. 25, Issue 19, pp. 1433-1435 (2000)

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We report what is to our knowledge the first operation of a planar dielectric tapered-waveguide laser. The waveguide laser is fabricated by potassium-ion exchange in Nd3+ -doped BK7 glass and consists of a single-mode channel waveguide of a few micrometers' width followed by a linear taper up to a broad region with a width of ∼180µm . A slope efficiency of 42% is found both in the tapers and in standard channel waveguides fabricated upon the same substrate, indicating that the tapers and the channels have similar internal losses; hence the low-loss nature of the tapered beam expansion. The output from either end of the tapered structure is found to be nearly diffraction limited.

© 2000 Optical Society of America

OCIS Codes
(140.3410) Lasers and laser optics : Laser resonators
(140.3460) Lasers and laser optics : Lasers
(140.3580) Lasers and laser optics : Lasers, solid-state
(230.7370) Optical devices : Waveguides

S. J. Hettrick, J. I. Mackenzie, R. D. Harris, J. S. Wilkinson, D. P. Shepherd, and A. C. Tropper, "Ion-exchanged tapered-waveguide laser in neodymium-doped BK7 glass," Opt. Lett. 25, 1433-1435 (2000)

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