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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 15 — Aug. 1, 2014
  • pp: 4553–4556

Efficient laser emission from cladding waveguide inscribed in Nd:GdVO4 crystal by direct femtosecond laser writing

Hongliang Liu, Yang Tan, Javier R. Vázquez de Aldana, and Feng Chen  »View Author Affiliations

Optics Letters, Vol. 39, Issue 15, pp. 4553-4556 (2014)

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We report on the fabrication of depressed cladding waveguides in Nd:GdVO4 laser crystal by using femtosecond laser inscription. The cross section of the structure is a circular shape with a diameter of 150 μm. Under the optical pump at 808 nm, the continuous wave (cw) as well as pulsed (Q-switched by graphene saturable absorber) waveguide lasing at 1064 nm has been realized, supporting guidance of both TE and TM polarizations. The maximum output power of 0.57 W was obtained in the cw regime, while the maximum pulse energy of the pulsed laser emissions was up to 19 nJ (corresponding to a maximum average output power of 0.33 W, at a resonant frequency of 18 MHz). The slope efficiencies achieved for the cw and pulsed Nd:GdVO4 waveguide lasers were as high as 68% and 52%, respectively.

© 2014 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(140.3390) Lasers and laser optics : Laser materials processing
(230.7370) Optical devices : Waveguides

ToC Category:
Optical Devices

Original Manuscript: April 1, 2014
Revised Manuscript: June 24, 2014
Manuscript Accepted: June 29, 2014
Published: July 29, 2014

Hongliang Liu, Yang Tan, Javier R. Vázquez de Aldana, and Feng Chen, "Efficient laser emission from cladding waveguide inscribed in Nd:GdVO4 crystal by direct femtosecond laser writing," Opt. Lett. 39, 4553-4556 (2014)

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