Manifestation of nano-sized effects in photoinduced nonlinear optics of CdI2-Cu layered single crystals
2004 (English)In: Optics and lasers in engineering, ISSN 0143-8166, E-ISSN 1873-0302, Vol. 42, no 1, 85-89 p.Article in journal (Refereed) Published
The infrared (IR) induced second harmonic generation in the thin CdI2-Cu crystalline layers was discovered. With decreasing thickness of the CdI2-Cu Crystals Lip to several nanometers value of second-order nonlinear optical susceptibility d(14) (at wavelength chi = 2.76 mum) for the output IR-induced SHG significantly increases. For the Cu content about 0.4% the output SHG signal achieves its maximum at the sample thickness below 2 nm. It is important that for the samples with larger film thickness the corresponding changes have substantially different properties. Limitation of the d(14) at the larger concentration is probably caused by formation of the Cu Clusters limiting the enhancement of the hyperpolarizability for particular cluster Lis well as total nonlinear dielectric susceptibility.
Place, publisher, year, edition, pages
2004. Vol. 42, no 1, 85-89 p.
photoinduced optics, second harmonic generation
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-103682DOI: 10.1016/S0143-8166(03)00070-8ISI: 000220936200009ScopusID: 2-s2.0-1842612391OAI: oai:DiVA.org:kth-103682DiVA: diva2:561149
QC 201210172012-10-172012-10-17Bibliographically approved