Results 191 to 200 of about 11,957 (302)

Symmetry control by Raman-mode excitations via anharmonic couplings with terahertz field-induced infrared modes in ferroaxial PbWO₄. [PDF]

Sci Adv
Yamamoto M, Sato H, Ikeda R, Kubo T, Miyamoto T, Kimura K, Nagai T, Kimura T, Okamoto H.   +8 more
europepmc   +1 more source

Toward Highest Frequency, Phase‐Sensitive Electric Field Sensing Enabled by Plasmonic Circuits

Laser &Photonics Reviews, EarlyView.
An electromagnetic field sensor using an optical sensor head for distortion‐free, high‐sensitivity measurements with potential for high‐frequency operation is presented. The frequency response is enabled by an antenna‐integrated plasmonic modulator. The sensitivity is calculated, and optimizations to obtain thermal‐background‐limited sensitivity are ...
Michael Baumann, Hande Ibili, Boris Vukovic, Tobias Blatter, Jasmin Smajic, Juerg Leuthold   +5 more
wiley   +1 more source

Octave‐Spanning, Deterministic Single Soliton Generation in 4H‐Silicon Carbide‐On‐Insulator Microring Resonators

Laser &Photonics Reviews, EarlyView.
The miniaturization of metrology and precision spectroscopy systems requires robust, turn‐key microcombs with broad bandwidth, low threshold, and high efficiency. Here, high‐Q, dispersion‐engineered microresonators in a high‐confinement nonlinear SiC platform, combined with waveguide‐enabled thermal management and laser cooling, enable deterministic ...
Yi Zheng, Liping Zhou, Chengli Wang, Yanjing Zhao, Ailun Yi, Kresten Yvind, Xin Ou, Minhao Pu   +7 more
wiley   +1 more source

High-Performance Terahertz Detection via Quasi-2D Perovskite/Weyl Semimetal Heterojunction. [PDF]

Materials (Basel)
Feng C, Liu B, Ning H, Hua L, Zheng Z, Li S, Wang W, Liu Y.   +7 more
europepmc   +1 more source

Stimulated Forward Brillouin Scattering in Subwavelength Grating Silicon Membranes

Laser &Photonics Reviews, EarlyView.
This work proposes a novel strategy to achieve large Brillouin scattering with independent control of the optical and mechanical modes using subwavelength silicon membranes. We experimentally demonstrate remarkably high Brillouin gain, resulting in an on/off Stokes gain of 3 dB and anti‐Stokes loss of 4 dB in a 6 mm‐long waveguide with 35 mW of on‐chip
Paula Nuño Ruano, Jianhao Zhang, David González‐Andrade, Daniele Melati, Eric Cassan, Pavel Cheben, Laurent Vivien, Norberto Daniel Lanzillotti‐Kimura, Carlos Alonso‐Ramos   +8 more
wiley   +1 more source

Tunable Triple-Band Terahertz Perfect Absorber and Four-Input AND Gate Based on a Graphene Metamaterial. [PDF]

Nanomaterials (Basel)
Xu S, Zeng L, Shao Z, Li B, Hu W, Tu Y, Zhu X.   +6 more
europepmc   +1 more source

Non‐Uniform Programmable Photonic Waveguide Meshes

Laser &Photonics Reviews, EarlyView.
Integrating defect cells into uniform hexagonal waveguide meshes overcomes the fundamental spectral and temporal limitations of programmable photonics. By leveraging the Vernier effect through non‐uniform coupled cavities, this architecture achieves a tenfold increase in free spectral range and ultra‐fast sampling times, paving the way for next ...
Cristina Catalá‐Lahoz, José Capmany
wiley   +1 more source

Multimode Phonon Lasing via Self‐Induced Optical Coherent Pumping

Laser &Photonics Reviews, EarlyView.
A silicon optomechanical nanobeam generates self‐sustained phonon lasing in multiple competing mechanical modes via self‐pulsing, an intrinsic optical modulation arising from cavity nonlinearity. This self‐organized mechanism enables robust multi‐frequency operation spanning periodic, quasi‐periodic, and chaotic regimes without external modulation. The
David Alonso Tomás, Carlos Mas Arabí, Carles Milián, Néstor E. Capuj, Alejandro Martínez, Daniel Navarro Urrios   +5 more
wiley   +1 more source

Multichannel wavefront manipulation via wavelength-polarization multiplexed terahertz metadevice. [PDF]

iScience
Yue Z, Li J, Zheng C, Zhang Q, Chen M, Zhang Y, Dai Z, Song X, Zhang J, Xu Z, Ye Y, Yao J.   +11 more
europepmc   +1 more source

Photoconductive terahertz generation from textured semiconductor materials. [PDF]

Sci Rep, 2016
Collier CM, Stirling TJ, Hristovski IR, Krupa JD, Holzman JF.   +4 more
europepmc   +1 more source