Generation of a cylindrically symmetric, polarized laser beam with narrow linewidth and fine tunability.
Generation of a cylindrically symmetric, polarized laser beam with narrow linewidth and fine tunability.
复制标题
DOI：
10.1364/oe.14.012839
复制
发表时间：
2006-12
期刊：
影响因子：
3.8
通讯作者：
T. Hirayama;Y. Kozawa;Takahiro Nakamura;S. Sato
中科院分区：
文献类型：
--
作者：
T. Hirayama;Y. Kozawa;Takahiro Nakamura;S. Sato
我们演示了一种具有窄线宽和精细可调谐性的圆柱对称偏振激光束的产生。由于光纤中的LP 11模光束是HE 21（混合）模光束和TE 01或TM 01模光束的叠加，因此首先，从与相位调节板结合的外腔二极管激光器（ECDL）产生具有窄线宽和精细可调谐性的高阶横模（TEM 01或TEM 10）激光光束。然后，所产生的光束在双模光纤中通过。通过在光纤中适当增加应力双折射，得到了具有圆柱对称偏振态的环形激光束（径向或方位偏振光束）。
We demonstrated a generation of cylindrically symmetric, polarized laser beams with narrow linewidth and fine tunability. Since an LP11 mode beam in an optical fiber is a superposition of an HE21 (hybrid) mode beam and a TE01 or TM01 mode beam, firstly, a higher order transverse (TEM01 or TEM10) mode laser beam with narrow linewidth and fine tunability was generated from an external cavity diode laser (ECDL) in conjunction with a phase adjustment plate. Then the beam generated was passed in a two mode optical fiber. A doughnut shaped laser beam with the cylindrically symmetric polarization (a radially or azimuthally polarized beam) was obtained by properly adding stress-induced birefringence in the optical fiber.