Generation of an ultra-long sub-diffracted second-harmonic optical needle from a periodically poled LiNbO3 crystal
Sign Up to like & getrecommendations! Published in 2020 at "Applied Physics Letters"
DOI: 10.1063/1.5142522
Abstract: We experimentally demonstrate the use of a periodically poled LiNbO3 (PPLN) crystal to produce an ultra-long sub-diffraction optical needle via second-harmonic generation. When we input a radially polarized fundamental wave from a femtosecond laser, a… read more here.
Keywords: periodically poled; optical needle; ultra long; harmonic optical ... See more keywords
Direct generation of 523 nm orbital Poincaré mode from a diode-pumped Pr3+:LiYF4 laser with an off-axis optical needle pumping geometry.
Sign Up to like & getrecommendations! Published in 2021 at "Optics express"
DOI: 10.1364/oe.439491
Abstract: We demonstrate an ultra-compact (8 mm-long) green orbital Poincaré Pr3+:LiYF4 (YLF) laser, in which the intracavity lasing modes are represented as eigenmodes on an equivalent orbital Poincaré sphere (eOPS). This is achieved through the simple… read more here.
Keywords: orbital poincar; geometry; laser; optical needle ... See more keywords
Sinusoidal-amplitude binary phase mask and its application in achieving an ultra-long optical needle.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.463393
Abstract: Optical needle has become a hot research topic in recent years, due to the excellent properties and potential applications. To achieve a sub-diffraction optical needle, there are three common methods including planar diffractive lenses, reflective… read more here.
Keywords: optical needle; bpm; amplitude; binary phase ... See more keywords
Elliptical Supercritical Lens for Shaping Sub-Diffractive Transverse Optical Needle
Sign Up to like & getrecommendations! Published in 2023 at "Nanomaterials"
DOI: 10.3390/nano13020242
Abstract: Supercritical lens can create a sub-diffraction-limited focal spot in the far field, providing a promising route for the realization of label-free super-resolution imaging through the point scanning mechanism. However, all of the reported supercritical lenses… read more here.
Keywords: optical needle; transverse optical; sub diffractive; diffractive transverse ... See more keywords