迅速凋落波浪的抽的低语的画廊模式(WGM ) 纤维激光的极化性质被调查了。有二种极化,放射激光,这被发现横梁在二不同的泵下面从迅速凋落波浪的抽的 WGM 纤维激光射出调节。当泵横梁严格地沿着一根光纤的轴的方向时,放射激光的排放是横向的电的波浪,在射出点的电的向量沿着纤维的光线的方向,它形成特殊光线的极化放射。然而,当泵横梁从纤维的轴的方向背离时,两个横向的电、横向的磁性的波浪在放射激光的排放存在,它与光线、轴的极化的元素形成混合极化放射。把迅速凋落波浪的抽的 WGM 纤维激光的放射机制基于放射激光,观察极化性质很好被解释。
The polarization properties of an evanescent-wave pumped Whispering Gallery Mode (WGM) fibre laser have been investigated. It is found that there are two kinds of polarization lasing beam emitting from the evanescent-wave pumped WGM fibre laser under two different pump conditions. When the pump beam is strictly along the axial direction of an optical fibre, the lasing emission is transverse electric wave and the electrical vectors at emitting points are along the radial direction of the fibre, which forms a special radial polarization radiation. However, when the pump beam deviates from the axial direction of the fibre, both transverse electric and transverse magnetic waves exist in the lasing emission, which forms a mixed polarization radiation with radial and axial polarized elements. Based on lasing radiation mechanism of evanescent-wave pumped WGM fibre laser, the observed polarization properties are well explained.