Results 41 to 50 of about 8,275,469 (344)

Detection of second-order nonlinear optical magnetization by mapping normalized Stokes parameters [PDF]

open access: yes, 2013
A measurable magnetic (nonlocal) contribution to the second harmonic generation (SHG) of nonmagnetic materials is an intriguing issue related to chiral materials, such as biomolecules.
Larciprete, Maria Cristina   +11 more
core   +1 more source

Optical trapping: optical interferometric metrology and nanophotonics [PDF]

open access: yes, 2010
The two main themes in this thesis are the implementation of interference methods with optically trapped particles for measurements of position and optical phase (optical interferometric metrology) and the optical manipulation of nanoparticles for ...
Lee, Woei Ming
core   +2 more sources

Study on Optical Properties of Micro-Modulator Through $Z$-Scanning Method

open access: yesIEEE Photonics Journal, 2016
Stokes polarimeters and scanning slit optical beam profilers are used to measure the polarization properties and optical spot intensities of a laser beam, which go through the micromodulator by the $Z$-scanning method. The polarization properties of a $
X. B. Jiao   +4 more
doaj   +1 more source

Femtosecond Red and Near-Infrared Lasers Due to Cascaded-Raman-Assisted Four-Wave Mixing in a Nonlinear Yb-Doped Fiber Amplifier

open access: yesApplied Sciences, 2020
We demonstrated a straightforward approach to generate red and near-infrared laser emissions by a Raman-assisted four wave mixing (FWM) process in a nonlinear Yb-doped fiber amplifier, delivering 342 fs pulses of 241 nJ at 864 nm, 834 fs pulses of 21 nJ ...
Hui Xu   +9 more
doaj   +1 more source

Optimized Fresnel lens design for enhanced Passive infrared sensors in advanced security monitoring systems

open access: yesResults in Optics
Passive Infrared (PIR) motion sensors are integral to modern residential and commercial security systems, valued for their reliability, cost-effectiveness, and ability to detect motion through infrared radiation.
Vo Quang Sang   +2 more
doaj   +1 more source

Polarization Controllable Device for Simultaneous Generation of Surface Plasmon Polariton Bessel-Like Beams and Bottle Beams

open access: yesNanomaterials, 2018
Realizing multiple beam shaping functionalities in a single plasmonic device is crucial for photonic integration. Both plasmonic Bessel-like beams and bottle beams have potential applications in nanophotonics, particularly in plasmonic based circuits ...
Peizhen Qiu   +6 more
doaj   +1 more source

Thermally Tunable Orbital Angular Momentum Mode Generator Based on Dual-Core Photonic Crystal Fibers

open access: yesNanomaterials, 2021
The combination of mode division multiplexing (MDM) based on orbital angular momentum (OAM) modes with wavelength division multiplexing (WDM) has attracted considerable attention due to its ability to increase optical transmission capacity.
Lianzhen Zhang   +6 more
doaj   +1 more source

A Short-Distance Thermally Driven Double-Helix Transverse Thermoelectric Generator Based on LTCC Technology

open access: yesIEEE Journal of the Electron Devices Society
Based on LTCC technology, a single through-hole double-helix transverse thermoelectric generator (TEG) structure with short-distance vertical thermal drive is proposed.
Hong-Zhi Jia   +5 more
doaj   +1 more source

Wavelength-diversity transmission for fading mitigation in the atmospheric optical communication channel [PDF]

open access: yes, 2006
Mitigation of index of refraction turbulence (IRT) effects is crucial in long-range atmospheric communication links. Diversity-transmission is one favorable way for fading compensation.
Perlot, Nicolas   +7 more
core   +1 more source

Optical calibration of the SuperCam instrument body unit spectrometers

open access: yes, 2022
International audienceThe SuperCam remote sensing instrument on NASA's Perseverance rover is capable of four spectroscopic techniques, remote micro-imaging, and audio recording.
Forni, Olivier   +13 more
core   +1 more source

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