Last years, structured light attracts much attention. There are several review papers that describe generation and detection of such light. Such light fields can be generated both by using lasers and by adopting out-of-resonator optical components (for instance, an astigmatic converter). Structured light is a light field that has some structure, i.e. either transverse spatial structure (for example, Hermite-Gaussian (HG) or Laguerre-Gaussian beams), or longitudinal (for example, Airy beams), polarizational (for example, radially or azimuthally polarized beams), temporal (for example, space–time optical vortices) structure.