Yao Fengfeng, Hong Rongqu, Zhang Boao, Pei Yanbo, Hou Chunfeng, Sun Xiudong
Opt Lett. 2020 Nov 15;45(22):6118-6121. doi: 10.1364/OL.402660.
Tunable polarizing direction of random lasing emission by an applied electric field which radiated from the lateral end face of homogeneously aligned, dye-doped nematic liquid crystal (NLC) cell was demonstrated for the first time, to the best of our knowledge. The lasing emission was partially polarized in the direction along the director of the NLC without the applied electric field. By tuning the applied electric field, the NLC director could be rotated to arbitrary direction from homogeneous to homeotropic alignment, resulting in the polarizing direction of lasing emission to any direction from parallel to perpendicular to the substrate surface in the end face.
据我们所知，首次证明了通过施加电场可调节从均匀排列、染料掺杂的向列相液晶（NLC）盒侧面辐射出的随机激光发射的偏振方向。在没有施加电场的情况下，激光发射在沿NLC指向矢的方向上部分偏振偏振偏振。通过调节施加的电场，NLC指向矢可以从均匀排列旋转到任意方向，直至垂直排列，从而使端面中激光发射的偏振方向从平行于衬底表面到垂直于衬底表面的任意方向。
