Application of orbital angular momentum to simultaneous determination of tilt and lateral displacement of a misaligned laser beam

作者：Lin, J.; Yuan, X. -C.^*; Chen, Mingzhou; Dainty, J. C.

来源：Journal of the Optical Society of America A-Optics Image Science and Vision, 2010, 27(10): 2337-2343.

DOI：10.1364/JOSAA.27.002337

• LIGHT
• SPECTRUM
• PHOTONS

We present an analysis of the combined effects of tilt and lateral displacement on the orbital angular momentum spectrum of a laser beam. Our theory explains the symmetries and properties of the spectrum under the influence of misalignments. We apply the theory to establish a reliable and efficient method for determining and subsequently eliminating tilt and lateral displacement. An improved technique for obtaining the orbital angular momentum spectrum employing Laguerre-Gaussian modes is proposed. Finally, a numerical experiment is carried out to verify the method.

• 出版日期2010-10
• 单位南开大学; 南阳理工学院