Results 71 to 80 of about 1,257 (176)

Passivated SiC Surfaces for Photonic and Quantum Applications: Balancing Chemical Stability and Surface Luminescence

Advanced Materials Interfaces, Volume 13, Issue 11, 9 June 2026.
Low‐temperature passivation of SiC reveals that optical surface quality and chemical stability are not directly correlated. Ar plasma‐treated and SiNx‐passivated surfaces yield the lowest photoluminescence background, whereas CF4 plasma and ALD‐grown dielectrics introduce higher emission.
Marina Scharin‐Mehlmann, Sarah Saarmann, Christian Gobert, Robert Köhler, Patrick Berwian   +4 more
wiley   +1 more source

Broadband Reflective Terahertz Quarter‐Wave Metasurface Enabled by Two‐Photon Polymerization 3D‐Printing

Advanced Photonics Research, Volume 7, Issue 6, June 2026.
A compact reflective terahertz quarter‐wave metasurface fabricated via 2PP‐3D printing method is experimentally demonstrated near 1 THz frequency. Broadband linear‐to‐circular polarization conversion is achieved over 0.75–1.30 THz (∼54% fractional bandwidth), with axial ratio below 3 dB and ellipticity approaching −1.
Anjali Chaudhary, Anju Sajan, Rohit Chikkaraddy, Sunil Kumar, Ravendra Kumar Varshney, Miguel Navarro‐Cía   +5 more
wiley   +1 more source

Gain functionalization of silica microresonators [PDF]

Optics Letters, 2003
Erbium-doped solgel films are applied to the surface of silica microspheres to create low-threshold microactivity lasers. This gain functionalization can be applied by use of a number of different dopants, thereby extending the wavelength range of this class of device. Also, by varying the doping concentration and thickness of the applied solgel layer,
Lan, Yang, K J, Vahala
openaire   +2 more sources

Dissipative Kerr soliton formation in dual-mode interaction Si3N4 microresonators

APL Photonics
Dissipative Kerr soliton (DKS) microcombs based on multi-mode Si3N4 waveguides turn into an ideal tool that is compact and has precision for optical communication, precision spectroscopy, and frequency metrology.
Yurun Zhai, Junchen Liu, Linhua Jia, Fumin Zhang   +3 more
doaj   +1 more source

Quantum Dot Sensitized Whisperonic Solar Cells—Improving Efficiency Through Whispering Gallery Modes

Frontiers in Materials, 2019
Environmental deterioration and depletion in conventional energy resources greatly demand the need for photovoltaic devices, which use solar radiation to meet future energy demands.
Athrey Cholasettyhalli Dakshinamurthy, Tapan Kumar Das, P. Ilaiyaraja, Chandran Sudakar   +3 more
doaj   +1 more source

Study of Free‐Space Optical Quantum Network: Review and Prospectives

Advanced Science, Volume 13, Issue 36, 29 June 2026.
Free from the constraints of fiber connections, free‐space quantum network enables longer and more flexible quantum network connections. This review summarizes and comparatively analyzes free‐space quantum network experiments based on ground stations, satellites, and mobile platforms.
Hua‐Ying Liu, Zhenda Xie, Shining Zhu
wiley   +1 more source

Lithium Niobate Quadratic Integrated Nonlinear Photonics: Enabling Ultra‐Wide Bandwidth and Ultrafast Photonic Engines

Nanophotonics, Volume 15, Issue 9, 13 May 2026.
This perspective surveys emerging quantum and classical photonic applications across operating wavelengths and timescales, highlighting persistent technological gaps in integrated light sources. We examine the unique advantages of quadratic nonlinear photonics on the thin‐film lithium niobate (TFLN) platform and discuss strategies for realizing ...
Meng Tian, Guanyu Han, Ziyao Feng, Yu Liu, Yu Wang, Wenjun Deng, Ayed Al Sayem, Qiushi Guo   +7 more
wiley   +1 more source

Terahertz-Rate Kerr-Microresonator Optical Clockwork

Physical Review X, 2019
Kerr microresonators generate interesting and useful fundamental states of electromagnetic radiation through nonlinear interactions of continuous-wave (CW) laser light.
Tara E. Drake, Travis C. Briles, Jordan R. Stone, Daryl T. Spencer, David R. Carlson, Daniel D. Hickstein, Qing Li, Daron Westly, Kartik Srinivasan, Scott A. Diddams, Scott B. Papp   +10 more
doaj   +1 more source

Chameleonic Color‐Variable Microbead Emitters for Multilevel Spectroscopic Encryption from Visible to Infrared Wavelengths

Advanced Optical Materials, Volume 14, Issue 19, 22 May 2026.
Whispering‐gallery‐mode microresonators with sharp resonant peaks enable photonic barcoding. Similar to a chameleon, a rare‐earth‐free microcavity with π‐conjugated PAHs enables visibleto‐near infrared color generation from a single microbead. The unique resonat emission (spectral barcode) can be dynamically transformed via excitation wavelength change,
Barun Kumar Barman, Keisuke Watanabe, Kenzo Deguchi, Shinobu Ohki, Kenjiro Hashi, Atsushi Goto, Tadaaki Nagao   +6 more
wiley   +1 more source

Pixelated Laser with Tailored Emission Spectrum Photopatterned by Digital Holographic Microscopy

Advanced Optical Materials, Volume 14, Issue 17, 8 May 2026.
Azobenzene‐based surface‐relief gratings inscribed via DHM‐integrated holographic lithography enable programmable pixelated DFB laser architectures. This approach allows independent control of grating parameters across a 2D array, enabling spatially tailored emission spectra.
Sudharsana Bhashyam Pillailokam, Alex Berdin, Arri Priimagi   +2 more
wiley   +1 more source