Results 41 to 50 of about 97 (96)
Shining a Light on the Future of Biophotonics
Journal of Biophotonics, EarlyView.ABSTRACT Biophotonics—the interdisciplinary fusion of light‐based technologies with biology and medicine—is rapidly transforming research, diagnostics, and therapy across various domains. This white paper, developed in conjunction with the International Congress on Biophotonics 2024, offers a comprehensive overview of the current landscape and future ...
Francesco Baldini +9 more
wiley +1 more source
Large Beam Size Grating Coupler in Silicon‐on‐Insulator Using Fully Etched Subwavelength Gratings
Laser &Photonics Reviews, EarlyView.A fully etched, double‐period subwavelength structure is used to design a silicon‐on‐insulator grating coupler for large, well‐collimated off‐chip beams. The work experimentally demonstrates the generation of a 350‐micron wide beam, with a 54% radiation efficiency, thereby enabling efficient interaction with targets centimeters away from the chip ...
Miguel Barona‐Ruiz +7 more
wiley +1 more source
High‐Speed Multimode Fiber Imaging Using Binary‐Modulated Silicon Photonics Optical Phased Array
Laser &Photonics Reviews, EarlyView.A multimode fiber imaging system at 500 frames per second is experimentally demonstrated. It is enabled by a p‐i‐n diode‐based silicon photonics optical phased array. To simplify the electrical driving of p‐i‐n diodes, a binary modulation method with a costumed‐designed digital driver circuit is proposed. Reconstruction of each frame takes only 0.1 ms,
Gaolei Hu +3 more
wiley +1 more source
Laser &Photonics Reviews, EarlyView.A mid‐infrared frequency‐swept source operating is presented at 50 MScans s−1 using frequency down‐conversion of time‐stretched 1.5‐µm pulses generated from an Er‐doped mode‐locked fiber laser. The developed source enables high‐resolution gas‐phase MIR spectroscopy with a bandwidth of 15 cm−1 and a resolution of 0.086 cm−1 at a measurement rate of 50 ...
Makoto Shoshin +4 more
wiley +1 more source
All‐Fiber 2 µm Mamyshev Oscillator: Mapping of Different Operating Regimes
Laser &Photonics Reviews, EarlyView.An all‐fiber 2 µm Mamyshev oscillator is presented based on Tm‐doped fiber amplifiers separated by a broadband fixed wavelength filter and a tunable narrow bandwidth filter, which delivers 309 fs directly out of standard silica fiber. The different regimes of interaction are demonstrated, including how the mode‐locking region in terms of pump powers ...
Song Yang +3 more
wiley +1 more source
Laser &Photonics Reviews, EarlyView.Polarization standing waves (PSWs) created by broadband counter‐propagating light beams offer a flexible and efficient method for encoding complex and customizable structures in photosensitive materials with finely tunable periodicities and nanometric resolution.
Biagio Audia +3 more
wiley +1 more source
1 PHz of Coherent Bandwidth from a Compact Fiber Device
Laser &Photonics Reviews, EarlyView.A coherent comb spectrum with an unprecedented bandwidth of 1 PHz, spanning from the deep ultraviolet (280 nm) to the mid‐infrared (2700 nm), is generated by a compact fiber device. The integrated, novel pulse purification technology enables broadband dispersion control and the synthesis of low‐noise, single‐cycle near‐infrared pulses with a clean ...
Sarah R. Hutter +4 more
wiley +1 more source
Narrow Linewidth Laser Based on Extended Topological Interface States in 1D Photonic Crystals
Laser &Photonics Reviews, EarlyView.This work introduces a novel 1D‐TISE‐PhC semiconductor laser structure achieving uniform photon distribution, reduced linewidth (126 kHz), robust single‐mode performance (SMSR up to 50 dB), precise wavelength control, and tolerance to fabrication variations, demonstrated experimentally in an eight‐channel array.
Xiao Sun +8 more
wiley +1 more source
PLANTS, PEOPLE, PLANET, EarlyView.The UK's horticultural industry is shifting from reliance on unsustainable peat‐based growing media to products that contain alternative constituents, including coir, bark, wood fibre and composted green waste. Some peat‐alternatives carry an elevated risk of harbouring plant pathogens, including the potential to introduce novel pathogens from overseas,
Audrey M. Litterick +3 more
wiley +1 more source
physica status solidi (b), EarlyView.Bulk rutile GeO2 single crystals of 5–15 mm in diameter are grown by the top‐seeded solution growth. Among different dopants, Sb5+ is a very efficient n‐type donor enabling free electron concentrations above 1020 cm−3. Prepared wafers show full width at half maximum values of rocking curves below 30 arcsec and root mean square roughness of 0.15 nm. The
Zbigniew Galazka +17 more
wiley +1 more source