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Silicon Nitride

All articles tagged with #silicon nitride

technology2 hours ago•137 min saved

AI designs ultracompact photonic components 500x smaller than engineers imagined

AI-driven inverse design shrank three photonic-chip components—mirrors, a wavelength splitter and a spatial mode sorter—by up to 500×, producing devices about 11 μm long for mirrors and ~5 μm for the splitter, made from silicon nitride (400–800 nm thick). The AI-optimized designs deliver strong light confinement and up to 98.5% reflectivity, demonstrating manufacturable, compact components that could boost on-chip performance for fiber-optic communications, data centers, AI, LiDAR and quantum computing.

via Live Science|

#artificial-intelligence #inverse-design #nanophotonics

technology2 months ago•19 min saved

Chip-scale Mamyshev oscillator delivers nanojoule ultrafast pulses on silicon nitride

Researchers demonstrate a photonic integrated, erbium-ion-implanted Mamyshev oscillator on silicon nitride that produces a 176‑MHz train of nanojoule pulses without external seeding, which can be linearly compressed to 147 fs and directly generate a 1.5‑octave supercontinuum in a Si3N4 waveguide; the same source enables THz time-domain spectroscopy with 5 THz bandwidth and 90‑dB dynamic range, underscoring potential for chip-scale metrology and portable spectroscopy.

via Nature|

#integrated-photonics #mamyshev-oscillator #mode-locked-laser

science-and-technology2 years ago•5 min saved

Revolutionary Optical Device Enabled by Conjoined 'Racetracks'

Researchers at Caltech and UC Santa Barbara have developed a new microcomb device that overcomes the optical limitations of ultra-low-loss silicon nitride (ULL nitride) by generating pulses in pairs. By creating multiple conjoined racetracks, the paired laser pulses bunch up, counteracting the dispersion and allowing the microcombs to work properly. This breakthrough could lead to the integration of microcombs into handheld devices and the creation of large photonic circuit arrays for soliton pulses. The manufacturing scalability of the complementary metal–oxide–semiconductor (CMOS) process makes it easier and more economical to produce these short-pulse microcombs.

via Phys.org|

#dispersion #microcombs #optical-devices

fashion-and-style2 years ago•6 min saved

"Omega's Silicon Nitride Seamaster Planet Ocean: A Game-Changer in Watchmaking"

Omega has unveiled the new Seamaster Planet Ocean watch in silicon nitride, incorporating unconventional materials and setting a new standard. With a bold design featuring a grey ceramic case, sandblasted titanium bezel, and orange accents on the dial, this watch is built for exploration. Powered by the Co-Axial Master Chronometer Calibre 8906 Titanium, it is anti-magnetic, water-resistant up to 600 meters, and has GMT and world timer capabilities. What sets this timepiece apart is its master chronometer certification, making it a true standout in the luxury watch market.

via The Manual|

#fashion-and-style #luxury-watch #master-chronometer

technology3 years ago•2 min saved

Revolutionizing Electronics: Laser Technology Controls Electron Emission at Unprecedented Speeds.

Scientists at EPFL and IBM have developed a hybrid integrated tunable laser by combining lithium niobate and silicon nitride, which offers low frequency noise and fast wavelength tuning. This laser has potential applications in LiDAR, telecommunications, and quantum computing due to its unique combination of properties. The hybrid platform has the potential to realize integrated transceivers for telecommunications as well as microwave-optical transducers for use in quantum computing.

via SciTechDaily|

#laser #lidar #lithium-niobate