Article

Applied Physics B

, Volume 82, Issue 3, pp 431-437

First online:

Characterization of second and third order optical nonlinearities of ZnO sputtered films

  • M.C. LarcipreteAffiliated withDipartimento di Energetica, INFM at Università di Roma “La Sapienza” Email author 
  • , D. HaertleAffiliated withNonlinear Optics Laboratory, Institute of Quantum Electronics, ETH Hönggerberg
  • , A. BelardiniAffiliated withDipartimento di Energetica, INFM at Università di Roma “La Sapienza”Dipartimento di Fisica, Rome, Italy and Università di Roma Tre
  • , M. BertolottiAffiliated withDipartimento di Energetica, INFM at Università di Roma “La Sapienza”
  • , F. SartoAffiliated withDivision of Advanced Physics Technologies, ENEA
  • , P. GünterAffiliated withNonlinear Optics Laboratory, Institute of Quantum Electronics, ETH Hönggerberg

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Abstract

We measured the second and third order optical nonlinearity of zinc oxide, grown on glass substrates by the ion beam sputtering technique. Second and third harmonic generation measurements were performed by means of the rotational Maker fringes technique for different polarization configurations, thus allowing the determination of all non-zero components of the second order susceptibility at three different fundamental beam wavelengths, i.e., 1064 nm, 1542 nm and 1907 nm. The dispersion of the nonlinear optical coefficients has been evaluated, while the nonlinear optical coefficients were found to range between 0.9 pm/V and 0.16 pm/V for d33, 0.53 pm/V and 0.08 pm/V for |d15|, 0.31 and 0.08 pm/V for |d31|, with increasing wavelength. Finally, one third order susceptibility, χijkl (3), has been determined by third harmonic generation measurements at a fundamental wavelength λ=1907 nm and a value for χ3333 (3) of 185×10-20 m2/V2 has been found.