Results 191 to 200 of about 374,441 (328)

Extremely sensitive multi-order mode refractive index sensor using TiO2 nanograss film and weakly bounded waveguide modes

open access: gold, 2021
Qiu-Shun Li   +7 more
openalex   +1 more source

Metalens Array for Complex‐Valued Optical Discrete Fourier Transform

open access: yesAdvanced Optical Materials, EarlyView.
A single‐layer metalens‐array device performs complex‐to‐complex discrete Fourier transforms (DFTs) optically with O(N) digital time complexity. Integrated interferometric phase retrieval and error mitigation scheme enables accurate, compact, and low‐power optical computing. The approach provides a versatile framework for implementing arbitrary complex‐
Randy Stefan Tanuwijaya   +6 more
wiley   +1 more source

Demonstration of multiple-wavelength-band photonic integrated circuits using a silicon and silicon nitride 2.5D integration method. [PDF]

open access: yesNanophotonics
Fu M   +12 more
europepmc   +1 more source

Mid‐Infrared Intersubband Transitions in p‐Type SiGe Parabolic Quantum Wells

open access: yesAdvanced Optical Materials, EarlyView.
The design, growth, and characterization of hole‐doped Ge‐rich SiGe parabolic quantum wells exhibiting mid‐infrared intersubband transitions are reported. Structural analyses confirm the parabolic compositional profile, while optical spectroscopy supported by tight‐binding simulations demonstrates strong and temperature‐stable absorption up to room ...
Marco Faverzani   +10 more
wiley   +1 more source

Harnessing Ultrafast Optical Pulses for 3D Microfabrication by Selective Tweezing and Immobilization of Colloidal Particles in an Integrated System

open access: yesAdvanced Photonics Research, Volume 6, Issue 5, May 2025.
Microfabrication using nano‐ to micron‐sized blocks has transformative potential for next‐gen electronics, optoelectronics, and materials. Traditional methods are limited by scalability and precision. STIC, a single‐laser system for precise colloid manipulation and immobilization using femtosecond lasers, is introduced that enables efficient 3D ...
Krishangi Krishna   +4 more
wiley   +1 more source

Light-amplification-assisted sum-frequency generation in erbium-doped thin-film lithium niobate optical waveguides. [PDF]

open access: yesNanophotonics
Liu Y   +11 more
europepmc   +1 more source

Accelerating Luminescence in Nanostructures: Exploring the Physical Limits and Impact of Ultrafast Emission in Nanoscale Materials

open access: yesAdvanced Photonics Research, EarlyView.
This review highlights recent advances in accelerating luminescence in nanostructures through cooperative emission, resonator coupling, and nonlocal light–matter interactions. By unifying concepts such as excitonic superradiance, superfluorescence, and the plasmonic Purcell effect, it reveals physical limits of ultrafast emission and their potential ...
Masaaki Ashida   +3 more
wiley   +1 more source

Squeezed light generation in periodically poled thin-film lithium niobate waveguides. [PDF]

open access: yesNanophotonics
Shi X   +14 more
europepmc   +1 more source

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