St. John's Daily Star, 1920-11-22

The St. John's Daily Star was published daily except Sunday between 17 April 1915 - 23 July 1921

Western Star, 1913-03-05

The Western Star began publication on Newfoundland's west coast on 4 April 1900, appearing weekly with brief semiweekly periods up to 1952, when it became a daily. As of 17 April 2019 it continues as a free weekly community paper

Third harmonic generation of laser radiation in Fe- and Zn-doped polyvinylpyrrolidone

The results of third-order nonlinear susceptibilities studies of Fe- and Zn-doped polyvinylpyrrolidone (PVP) aqueous solution in processes of third harmonic generation of Nd:YAG laser radiation are presented. Nonlinear susceptibilities of PVP:Fe and PVP:Zn were calculated to be $5\times10^{-13}$ esu and $3\times10^{-13}$ esu respectively. Third harmonic conversion efficiencies in these metallocomplexes were measured to be $8\times 10^{-7}$ and $5\times 10^{-7}$ respectively. The Z-scan method was applied to determine Kerr effect influence on frequency conversion process. The value of nonlinear refractive index of PVP:Fe at the wavelength of $\lambda = 1\,064$ nm was measured to be $n_2 = - 6.7\times 10^{-13}$ esu