Axicon is a versatile optical element for forming a zero-order Bessel beam, including high-
power laser radiation schemes. Nevertheless, it has drawbacks such as the produced …

We demonstrated and investigated, both theoretically and experimentally, the transformation
of cylindrical vector beams with an embedded phase singularity under the condition of …

We observe a series of unstable and dynamic behaviors of acoustic vortices propagating in
stratified inhomogeneous media. These behaviors include bending, stretching, distorting …

It is known that the astigmatic transformation can be used to analyze the topological charge
of a vortex beam, which can be implemented by using various optical methods. In this case …

We describe continuous-variable hyperentanglement in polarization and orbital angular
momentum modes of an optical parametric oscillator. The quantum stochastic equations for …

Transformation of Bessel beams by biaxial and uniaxial crystals is investigated
experimentally and theoretically. Experimental observations show beam symmetry changing …

We investigate theoretically and experimentally the astigmatic transformations of Bessel
beams at propagation perpendicularly to the c-axis of a uniaxial crystal. The analogy …

Polarization-resolved second harmonic generation (P-SHG) microscopy is an efficient
imaging modality for in situ observation of biopolymers structure in tissues, providing …

A method is proposed for detecting birefringence of mechanically free parabolic gradient-
index lenses based on the astigmatic transformation of the zero-order Bessel beam …

Polarization-resolved second-harmonic microscopy has recently emerged as a valuable
technique for in situ imaging of collagen structure in tissues. Nevertheless, collagen-rich …