TITLE

Difference in the nonlinear optical response of epitaxial Si on Ge(100) grown from SiH4 at 500 °C and from Si3H8 at 350 °C due to segregation of Ge

AUTHOR(S)
Valev, V. K.; Leys, F. E.; Caymax, M.; Verbiest, T.
PUB. DATE
February 2009
SOURCE
Applied Physics Letters;2/9/2009, Vol. 94 Issue 6, pN.PAG
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The properties of epitaxial strained Si on Ge (001) grown from SiH4 at 500 °C and from Si3H8 at 350 °C have been investigated as a function of film thickness using second harmonic generation (SHG). A clear difference in the corresponding signal amplitude, for both the interface and the “bulk” contributions, is observed. After analysis of the nonlinear susceptibility tensor components, this difference is attributed to the segregation of Ge to the SiO2/Si interface. It is demonstrated that when employed in combination with more standard experimental techniques, SHG can be a valuable tool for probing and characterizing the SiO2/Si/Ge interfaces.
ACCESSION #
36609453

 

Related Articles

  • Simultaneous corona poling of multiple glass layers for enhanced effective second-order optical nonlinearities. Yadav, K.; Smelser, C. W.; Jacob, S.; Blanchetiere, C.; Callender, C. L.; Albert, J. // Applied Physics Letters;7/18/2011, Vol. 99 Issue 3, p031109 

    Silica-based thin-film multilayers are investigated as a means to enhance the effective second-order nonlinearity induced in silica glass structures by corona poling. Structures consisting of phosphorus-doped and undoped silica glass layers exhibit second harmonic generation (SHG) that is higher...

  • Linear and nonlinear optical properties of hydrated and dehydrated silica micro-spheres under an electric bias. Pang, C. P.; Lue, J. T. // European Physical Journal B -- Condensed Matter;Jun2006, Vol. 51 Issue 4, p593 

    The linear refractive indices and nonlinear second-order susceptibility of hydrated and dehydrated silica micro-spheres are studied using attenuated total reflectance (ATR) and the second harmonic generation (SHG) method in direct transmission, respectively. A dramatic change of the effective...

  • Influence of the SiO2 interlayer thickness on the density and polarity of charges in Si/SiO2/Al2O3 stacks as studied by optical second-harmonic generation. Terlinden, N. M.; Dingemans, G.; Vandalon, V.; Bosch, R. H. E. C.; Kessels, W. M. M. // Journal of Applied Physics;2014, Vol. 115 Issue 3, p1 

    By accurately tuning the SiO2 interlayer thickness the density and polarity of charges in Si/SiO2/Al2O3 stacks can be controlled. We report on the number density, polarity, and physical location of charges present in the stacks as studied by optical second-harmonic generation (SHG). Depending on...

  • Oscillatory optical second-harmonic generation from Si(001) surface during thin-film epitaxy. Tok, E. S.; Price, R. W.; Taylor, A. G.; Zhang, J. // Applied Physics Letters;2/14/2000, Vol. 76 Issue 7 

    Periodic variation in optical second-harmonic generation during homoepitaxial growth of silicon on singular Si(001) surface is reported. The period of the oscillations corresponds to bilayer growth, and the oscillations are correlated with the mechanism associated with a two-dimensional...

  • Second harmonic generation from Si[sub m]Ge[sub n] superlattices. Bottomley, D.J.; Lupke, G.; Ledgerwood, M.L.; Zhou, X.Q.; van Driel, H.M. // Applied Physics Letters;10/25/1993, Vol. 63 Issue 17, p2324 

    Investigates the second harmonic generation (SHG) from Si[sub m]Ge[sub n] strained layer superlattices (SLS). Details on the SHG signals of odd-odd, even-even and even-odd specimens for a 775 nanometer fundamental beam; Lack of a large bulk dipole-allowed signal in odd-odd SLS; Advantage of SLS...

  • Electric quadrupole second-harmonic generation spectra in epitaxial vanadyl and titanyl phthalocyanine films grown by molecular-beam epitaxy. Hoshi, Hajime; Yamada, Toshiki; Ishikawa, Ken; Takezoe, Hideo; Fukuda, Atsuo // Journal of Chemical Physics;8/8/1997, Vol. 107 Issue 6, p1687 

    For epitaxial vanadyl and titanyl phthalocyanine films with Laue symmetry 4/mmm, second-harmonic generation (SHG) spectra due to only electric quadrupole and electric quadrupole coupling mechanisms were obtained under a suitable geometry, while the contributions of electric dipole, magnetic...

  • Second-harmonic generation from Si/SiO2/Hf(1-x)SixO2 structures. Carriles, R.; Kwon, J.; An, Y. Q.; Miller, J. C.; Downer, M. C.; Price, J.; Diebold, A. C. // Applied Physics Letters;4/17/2006, Vol. 88 Issue 16, p161120 

    Optical second-harmonic generation (SHG) is used to characterize thin films of Hf(1-x)SixO2 (x=0, 0.3, 0.45, 0.65, and 1) deposited by atomic layer epitaxy at 375 °C on Si substrates with 11 Å SiO2 buffer layers. Reflected SHG intensity measured at room temperature increases monotonically...

  • Second harmonic generation induced by mechanical stresses in silicon. Aktsipetrov, O. A.; Bessonov, V. O.; Dolgova, T. V.; Maidykovskii, A. I. // JETP Letters;Feb2010, Vol. 90 Issue 11, p718 

    The optical second-harmonic generation induced by the external mechanical tension of the (001 ) silicon surface has been detected. A change in the spectrum of the second harmonic, which is caused by the modification of the band structure of silicon near the critical points E’o and E1...

  • Harnessing second-order optical nonlinearities at interfaces in multilayer silicon-oxy-nitride waveguides. Logan, Dylan F.; Alamin Dow, Ali B.; Stepanov, Dmitri; Abolghasem, Payam; Kherani, Nazir P.; Helmy, Amr S. // Applied Physics Letters;2/11/2013, Vol. 102 Issue 6, p061106 

    We demonstrate multi-layer silicon-oxy-nitride (SiON) waveguides as a platform for broadband tunable phase-matching of second-order nonlinear interactions arising at material interfaces. Second-harmonic generation (SHG) is measured with a 2 ps pulsed pump of 1515-1535 nm wavelength, where 6 nW...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics