  Much of the richness in nature arises due to the connection between classical
and quantum mechanics. In advanced science, the tools of quantum mechanics was
not only applied in microscopic description but also found its efficacy in
classical phenomena, broadening the fundamental scientific frontier. A
pioneering inspiration is substituting Fock state with structured spatial modes
to reconstruct a novel Hilbert space. Based on this idea, here we propose the
classical analogy of squeezed coherent state for the first time, deriving
classical wave-packets by applying squeezed and displacement operators on free
space structured modes. Such a generalized structured light not only creates
new degrees of freedom into structured light, including tunable squeezed degree
and displacement degree but also exhibits direct correlation between quadrature
operator space and real space. Versatile generalized classical squeezed states
could be experimentally generated by a simple large-aperture off-axis-pumped
solid-state laser. On account of its tunablity, we initially put forward a
blueprint using classical structured light, an analogy of squeezed states to
realize super-resolution imaging, providing an alternative way to beat
diffraction limit as well as opening an original page for subsequent
applications of high-dimensional structured light, such as high-sensitive
measurement and ultra-precise optical manipulation.
