Imaging properties of axicon in a scanning optical system

Abstract

The imaging properties of a scanning optical system that incorporates an axicon are presented. Beamshape characteristics including the axial distribution of the J(0) beam and its control and aberration effects arising from off-axis illumination are experimentally studied. These parameters are relevant when the axicon is used in an imaging system operating in the beam-scanning mode. The J(0) pattern produced by a blazed axicon transmittance grating is also presented.

Polarization control of non-diffractive helical optical beams through subwavelength metallic apertures

“…carry orbital angular momentum [23]. The combination of these non-diffractive and singular properties might have interesting implications for imaging techniques [24]- [26], superresolution techniques [27], quantum optics [28] and optical trapping [29,30]. Furthermore, with annular concentric rings, SPs are resonantly excited on the grating.…”

A new microscope optics for laser dark-field illumination applied to high precision two dimensional measurement of specimen displacement

“…It appeared to be similar to that of the intensity profile of a J 0 Bessel beam that is expected to be produced at the focal plane. 41,43 Our preliminary simulation of optics ͑data not shown͒ showed similar intensity profiles.…”

“…[37][38][39][40] Such beams were practically used as the optics for microfabrication 41 and laser surgical knives 42 as well as for scanning microscopy, 43 optical trapping, [44][45][46][47] and evanescent field microscopy. 48 Axicons can also be useful to convert a single Gaussian laser beam into a beam of conical shape, i.e., a beam of ring-shape pattern with fixed aperture angle.…”

Nonparaxial analysis of continuous self-imaging gratings in oblique illumination

“…This optical component provides a long depth of focus with a good resolution and is a good candidate for many applications. For example, it has been integrated into scanning optical systems [8,9]. However, despite these two qualities, axicons seem to have limitations for wideangle imaging applications.…”