O. Krupka, A. El-Ghayoury, I. Rau, B. Sahraoui, J. G. Grote and F. Kajzar, “NLO Properties of Functionalized DNA Thin Films,” Thin Solid Films, Vol. 516, No. 24, 2008, pp. 8932-8936. doi:10.1016/j.tsf.2007.11.089

has been cited by the following article:

• TITLE: Nonlinear Optical Studies of DNA Doped Rhodamine 6G-PVA Films Using Picosecond Pulses

  AUTHORS: Sasidharan Sreeja, Balan Nityaja, Debasis Swain, Vadakkedathu Parameswaran Narayana Nampoori, Padmanabhan Radhakrishnan, Soma Venugopal Rao

  KEYWORDS: DNA; Thin Films; Z-Scan; Picosecond; Two-Photon Absorption

  JOURNAL NAME: Optics and Photonics Journal, Vol.2 No.3, September 20, 2012

  ABSTRACT: We present our results from the measurements of third-order optical nonlinearity in DNA doped Rhodamine 6G/PVA films achieved through Z-scan measurements using ~2 picosecond (ps) pulses at a wavelength of 800 nm. The films demonstrated negative nonlinear refractive index (n2) with magnitudes of (0.065 - 2.89) × 10–14 cm2/W with varying concentration of DNA. Open aperture data demonstrated strong two-photon absorption with a magnitude of ~1.6 cm/GW for films doped with 2 wt% of DNA. The recovery time of excited state population, retrieved from the degenerate pump-probe experimental data, was