Author/Authors :
Stadler، نويسنده , , Stefan and Dietrich، نويسنده , , Roland and Bourhill، نويسنده , , Grant and Brنuchle، نويسنده , , Christoph and Pawlik، نويسنده , , Andreas and Grahn، نويسنده , , Walter، نويسنده ,
Abstract :
A hyper-Rayleigh scattering, HRS, system constructed around an optical parametric power oscillator and allowing wide fundamental wavelength tunability is described in detail. The design of the HRS cell, which may overcome problems inherent with other cell designs, is discussed. The potential of this HRS system for non-resonant first hyperpolarizability, β, determination is highlighted via measurement of a dipolar chromophore at 1500 nm. The magnitude of the non-linearity may be explained by either increased conjugation in the charge-transfer state or by increased magnitude in non-diagonal β-tensor elements.
