An insight into optical beam induced current microscopy: Concepts and applications
Sign Up to like & getrecommendations! Published in 2022 at "Microscopy Research and Technique"
DOI: 10.1002/jemt.24212
Abstract: Laser scanning optical beam induced current (OBIC) microscopy has become a powerful and nondestructive alternative to other complicated methods like electron beam induced current (EBIC) microscopy, for high resolution defect analysis of electronic devices. OBIC… read more here.
Keywords: obic microscopy; beam; beam induced; microscopy ... See more keywords
An all-optical off-beam quartz-enhanced photoacoustic spectroscopy employing double-pass acoustic microresonators
Sign Up to like & getrecommendations! Published in 2022 at "Optics Communications"
DOI: 10.1016/j.optcom.2021.127447
Abstract: Abstract An all-optical off-beam quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor employing double-pass acoustic microresonators was proposed and experimentally investigated. An optical fiber Fabry–Perot interferometric sensor with quadrature point self-stabilization was employed for the detection of quartz… read more here.
Keywords: quartz; optical beam; pass; spectroscopy ... See more keywords
A 30 Gb/s PAM4 underwater wireless laser transmission system with optical beam reducer/expander
Sign Up to like & getrecommendations! Published in 2019 at "Scientific Reports"
DOI: 10.1038/s41598-019-45125-y
Abstract: We have, so far as we know, proposed and demonstrated the first 30 Gb/s four-level pulse amplitude modulation (PAM4) underwater wireless laser transmission (UWLT) system with an optical beam reducer/expander over 12.5-m piped underwater channel/2.5-m high-turbidity… read more here.
Keywords: transmission; reducer expander; beam reducer; optical beam ... See more keywords
Wavelength and chemical potential dependence of optical beam shifts in graphene
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Modern Optics"
DOI: 10.1080/09500340.2021.1881635
Abstract: We predict the spatial and angular Goos-Hänchen (GH) and Imbert-Fedorov (IF) shifts in partial (PR) and total internal reflection (TIR) conditions for fundamental Gaussian mode beams of a wide range of wavelength (400–1300 nm) impinging… read more here.
Keywords: shifts graphene; chemical potential; beam shifts; optical beam ... See more keywords
A 2D Pixelated Optical Beam Scanner Controlled by the Laser Wavelength
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Journal of Selected Topics in Quantum Electronics"
DOI: 10.1109/jstqe.2020.3017230
Abstract: We present a chip-based optical beam scanner based on a dispersive optical phased array (OPA) that illuminates the far field with a pixelated pattern. To scale up the OPA to a large number of antennas,… read more here.
Keywords: tex math; optical beam; beam scanner; inline formula ... See more keywords
1.55-μm Sidewall Grating DFB Lasers Integrated with a Waveguide Crossing for an Optical Beam Forming Network
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Photonics Technology Letters"
DOI: 10.1109/lpt.2023.3278880
Abstract: By using asymmetric twin-waveguide technology, a 1.55- $\mu \text{m}$ sidewall grating distributed feedback laser monolithically integrated with a passive waveguide crossing was for the first time demonstrated for an optical beam forming network, which needs… read more here.
Keywords: sidewall grating; forming network; beam forming; optical beam ... See more keywords
Coherence of Pseudo-Bessel Beams in a Turbulent Atmosphere
Sign Up to like & getrecommendations! Published in 2018 at "Atmospheric and Oceanic Optics"
DOI: 10.1134/s1024856019010093
Abstract: Coherent properties of nondiffracting pseudo-Bessel optical beams propagating in a turbulent atmosphere are studied theoretically. The solution of the equation formulated based on the paraxial approximation of the scalar wave equation for the second-order transverse… read more here.
Keywords: pseudo bessel; optical beam; coherence; turbulent atmosphere ... See more keywords
Simple precision measurements of optical beam sizes.
Sign Up to like & getrecommendations! Published in 2018 at "Applied optics"
DOI: 10.1364/ao.57.009863
Abstract: We present a simple high-precision method to quickly and accurately measure the diameters of Gaussian beams, Airy spots, and central peaks of Bessel beams ranging from sub-millimeter to many centimeters without specialized equipment. By simply… read more here.
Keywords: measurements optical; precision measurements; simple precision; optical beam ... See more keywords
Highly efficient all-optical beam modulation utilizing thermo-optic effects.
Sign Up to like & getrecommendations! Published in 2018 at "Optics express"
DOI: 10.1364/oe.26.009502
Abstract: Suspensions of plasmonic nanoparticles can diffract optical beams due to the combination of thermal lensing and self-phase modulation. Here, we demonstrate extremely efficient optical continuous wave (CW) beam switching across the visible range in optimized… read more here.
Keywords: modulation; thermo optic; optical beam; efficient optical ... See more keywords
Adaptive optical beam alignment and link protection switching for 5G-over-FSO.
Sign Up to like & getrecommendations! Published in 2021 at "Optics express"
DOI: 10.1364/oe.426551
Abstract: Free-space optics (FSO) convey an enormous potential for ultra-high-capacity seamless fiber-wireless transmission in 5G and beyond communication systems. However, for its practical exploitation in future deployments, FSO still requires the development of very high-precision and… read more here.
Keywords: optical beam; beam alignment; fso; alignment ... See more keywords
Photothermal Optical Beam Steering Using Large Deformation Multi-Layer Thin Film Structures
Sign Up to like & getrecommendations! Published in 2021 at "Micromachines"
DOI: 10.3390/mi12040428
Abstract: Photothermal actuation of microstructures remains an active area of research for microsystems that demand electrically isolated, remote, on-chip manipulation. In this study, large-deformation structures constructed from thin films traditional to microsystems were explored through both… read more here.
Keywords: mechanical tilt; photothermal optical; optical beam; large deformation ... See more keywords