Penninck L, Beeckman J, De Visschere P, Neyts K
ELIS (Electronics and Information Systems Department), Ghent University, St. Pietersnieuwstraat 41, Ghent, Belgium.
Phys Rev E Stat Nonlin Soft Matter Phys. 2012 Apr;85(4 Pt 1):041702. doi: 10.1103/PhysRevE.85.041702. Epub 2012 Apr 9.
Dye-doped cholesteric liquid crystals with a helical pitch of the order of a wavelength have a strong effect on the fluorescence properties of dye molecules. This is a promising system for realizing tunable lasers at low cost. We apply a plane wave model to simulate the spontaneous emission from a layer of cholesteric liquid crystal. We simulate the spectral and angle dependence and the polarization of the emitted light as a function of the order parameter of the dye in the liquid crystal. Measurements of the angle dependent emission spectra and polarization are in good agreement with the simulations.
螺旋节距为波长量级的染料掺杂胆甾相液晶对染料分子的荧光特性有强烈影响。这是一个有望低成本实现可调谐激光器的系统。我们应用平面波模型来模拟胆甾相液晶层的自发发射。我们模拟发射光的光谱、角度依赖性和偏振作为液晶中染料序参量的函数。角度依赖发射光谱和偏振的测量结果与模拟结果吻合良好。
