On-axis diffraction-limited design of bi-parabolic singlet lenses
Sign Up to like & getrecommendations! Published in 2019 at "Optik"
DOI: 10.1016/j.ijleo.2019.162970
Abstract: Abstract A lens limited by diffraction and having two parabolic surfaces is presented. The knowledge of the following parameters: object distance, relative refractive index, lens thickness, and image distance, enables to analytically calculate the parabolic… read more here.
Keywords: design parabolic; parabolic singlet; diffraction limited; limited design ... See more keywords
Diffraction-free light droplets for axially-resolved volume imaging
Sign Up to like & getrecommendations! Published in 2017 at "Scientific Reports"
DOI: 10.1038/s41598-017-00042-w
Abstract: An ideal direct imaging system entails a method to illuminate on command a single diffraction-limited region in a generally thick and turbid volume. The best approximation to this is the use of large-aperture lenses that… read more here.
Keywords: free light; diffraction free; diffraction limited; volume ... See more keywords
Diffraction-limited axial scanning in thick biological tissue with an aberration-correcting adaptive lens
Sign Up to like & getrecommendations! Published in 2019 at "Scientific Reports"
DOI: 10.1038/s41598-019-45993-4
Abstract: Diffraction-limited deep focusing into biological tissue is challenging due to aberrations that lead to a broadening of the focal spot. The diffraction limit can be restored by employing aberration correction for example with a deformable… read more here.
Keywords: biological tissue; diffraction limited; axial scanning; limited axial ... See more keywords
3 kW power-level all-fiberized superfluorescent fiber source with linear polarization and near-diffraction-limited beam quality.
Sign Up to like & getrecommendations! Published in 2022 at "Applied optics"
DOI: 10.1364/ao.457968
Abstract: In this paper, we demonstrate a high-power linearly polarized all-fiberized superfluorescent fiber source (SFS) with near-diffraction-limited beam quality. The laser system is based on a master oscillator power amplifier configuration, which mainly consists of a… read more here.
Keywords: diffraction limited; fiber; power; near diffraction ... See more keywords
Nearly diffraction-limited hard X-ray line focusing with hybrid adaptive X-ray mirror based on mechanical and piezo-driven deformation.
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DOI: 10.1364/oe.26.017477
Abstract: We have developed the new hybrid adaptive X-ray mirror based on mechanical and piezo-driven deformation to realize precise shape controllability on a long-length mirror. The mechanical bender approximately provides the required ellipse, while the piezoelectric… read more here.
Keywords: diffraction limited; hybrid adaptive; adaptive ray; mirror ... See more keywords
Diffraction limited mid-infrared reflectance microspectroscopy with a supercontinuum laser.
Sign Up to like & getrecommendations! Published in 2018 at "Optics express"
DOI: 10.1364/oe.26.030644
Abstract: Chemical mapping was demonstrated with a mid-infrared (MIR) microspectroscopy setup based on a supercontinuum source (SC) emitting in the spectral range from 1.55 to 4.5 µm and a MEMS-based Fabry-Pérot filter spectrometer. Diffraction limited spatial… read more here.
Keywords: mid infrared; supercontinuum; microspectroscopy; diffraction limited ... See more keywords
Phase-sensitive lock-in detection for high-contrast mid-infrared photothermal imaging with sub-diffraction limited resolution.
Sign Up to like & getrecommendations! Published in 2019 at "Optics express"
DOI: 10.1364/oe.27.002643
Abstract: Imaging of the phase output of a lock-in amplifier in mid-infrared photothermal vibrational microscopy is demonstrated for the first time in combination with nonlinear demodulation. In general, thermal blurring and heat transport phenomena contribute to… read more here.
Keywords: resolution; mid infrared; diffraction limited; infrared photothermal ... See more keywords
151W monolithic diffraction-limited Yb-doped photonic bandgap fiber laser at ~978nm.
Sign Up to like & getrecommendations! Published in 2019 at "Optics express"
DOI: 10.1364/oe.27.024972
Abstract: We demonstrate that the strong 4-level Yb emission in a fiber laser can be almost completely suppressed in an Yb all-solid double-clad photonic bandgap fiber, resulting in highly efficient high-power monolithic Yb fiber lasers operating… read more here.
Keywords: bandgap fiber; diffraction limited; fiber laser; photonic bandgap ... See more keywords
Pupil inversion Mach-Zehnder interferometry for diffraction-limited optical astronomical imaging.
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DOI: 10.1364/oe.396338
Abstract: We present theoretical and laboratory experimental results on a robust interferometric device based on pupil inversion, or 180° rotational shearing interferometry. The image of an astronomical object degraded by the atmosphere turbulence can be restored… read more here.
Keywords: interferometry; mach zehnder; pupil inversion; diffraction limited ... See more keywords
Design of a metal-based deformable mirror for orthogonal beam deflection and highly dynamic beam oscillation.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.457364
Abstract: We report on an opto-mechanical metal mirror design for highly dynamic, diffraction-limited focus shifting. Here, the mechanical geometry of the membrane is of crucial interest as it must provide sufficient optical performance to allow for… read more here.
Keywords: highly dynamic; diffraction limited; mirror; beam ... See more keywords
Power scaling limits of diffraction-limited fiber amplifiers considering transverse mode instability.
Sign Up to like & getrecommendations! Published in 2023 at "Optics express"
DOI: 10.1364/oe.483808
Abstract: An empirical TMI threshold formula is derived based on a recently developed model and used to analyze the power-scaling performance of ytterbium-doped silica glass and YAG (Y3Al5O12) and lutetia (Lu2O3) single-crystalline fiber amplifiers. Overall, the… read more here.
Keywords: diffraction limited; limits diffraction; power scaling; power ... See more keywords