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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 18 — Sep. 15, 2006
  • pp: 2707–2709

Simultaneously phase-matched second- and third-harmonic generation from 1.55 μ m radiation in annealed proton-exchanged periodically poled lithium niobate waveguides

M. Marangoni, M. Lobino, and R. Ramponi  »View Author Affiliations

Optics Letters, Vol. 31, Issue 18, pp. 2707-2709 (2006)

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Third-harmonic generation (THG) in the cw regime from C-band radiation was achieved in annealed proton-exchanged periodically poled lithium niobate (PPLN) waveguides. By suitable design of fabrication parameters and operating conditions, quasi-phase-matching (QPM) is obtained simultaneously for the second-harmonic generation process ( ω 2 ω , first-order QPM) and for the sum-frequency-generation process ( ω + 2 ω 3 ω , third-order QPM), which provides the third harmonic of the pump field. The high overlap between the field profiles of the interacting modes— TM 00 at ω and TM 10 at 2 ω and 3 ω —results in what is believed to be the highest ever reported normalized conversion efficiency for THG from telecommunication wavelengths, equal to 0.72 % W 2 cm 4 .

© 2006 Optical Society of America

OCIS Codes
(130.4310) Integrated optics : Nonlinear
(190.4160) Nonlinear optics : Multiharmonic generation
(300.6460) Spectroscopy : Spectroscopy, saturation

ToC Category:
Integrated Optics

Original Manuscript: March 23, 2006
Revised Manuscript: June 22, 2006
Manuscript Accepted: June 27, 2006
Published: August 25, 2006

M. Marangoni, M. Lobino, and R. Ramponi, "Simultaneously phase-matched second- and third-harmonic generation from 1.55 μm radiation in annealed proton-exchanged periodically poled lithium niobate waveguides," Opt. Lett. 31, 2707-2709 (2006)

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