Results 251 to 260 of about 3,060,494 (349)

Graphene as Infrared and Electron Transparent Electrode Applied to the Design of Narrow Bandgap Nanocrystal‐Based Photodiode

open access: yesAdvanced Optical Materials, EarlyView.
The article explores the need for transparent conductive electrode in the context of nanocrystal based infrared photodetectors beyond traditional transparent conductive oxide and metallic grids. Use of such sensor for imaging where the diode is deposited on a read‐out integrated circuit raised the need for top transparent electrode.
Dario Mastrippolito   +17 more
wiley   +1 more source

Self‐Aligned Waveguide Array Integrated with Flat Microlenses for Environment‐Adaptive and High‐Resolution Compound Eye Vision

open access: yesAdvanced Optical Materials, EarlyView.
For an amphibious high‐resolution compound eye vision system, environment‐adaptive self‐aligned waveguides are integrated with high‐density flat microlenses. Fabrication, optical performance, and environmental adaptability are investigated, demonstrating stable focusing, efficient light collection, and enhanced spatial resolution.
Hyuk Jae Jang   +4 more
wiley   +1 more source

Carbon‐Coated Moth‐Eye Structure: An Ultrabroadband THz‐DUV Near‐Perfect Absorber

open access: yesAdvanced Optical Materials, EarlyView.
A silicon moth‐eye surface coated with pyrolytic carbon achieves >98% absorption from 1 to 1200 THz by combining gradient‐index matching with PyC's broadband conductivity, forming an ultra‐broadband absorber from THz to deep UV. Experimental results and simulations agreed well.
Yuki Hakamada   +18 more
wiley   +1 more source

Q‐Switched Mode‐Locking in Er‐Doped ZrF4‐BaF2‐LaF3‐AlF3‐NaF Fiber Lasers Using Carbon Nanotube–Saturable Absorber and GaSb‐Based Semiconductor‐Saturable Absorber Mirror

open access: yesAdvanced Photonics Research, EarlyView.
We compare Q‐switched mode‐locking in Er‐doped ZrF4‐BaF2‐LaF3‐AlF3‐NaF fiber lasers using an aerosol‐synthesized carbon nanotube (CNT)‐saturable absorber with a GaSb‐based semiconductor‐saturable absorber mirror (SESAM). While SESAM enables shorter pulses with higher peak power, CNT absorbers offer tunability and cost‐effectiveness.
Boris Perminov   +5 more
wiley   +1 more source

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