Results 191 to 200 of about 11,658 (306)

Hyperspectral terahertz imaging and optical clearance for cancer classification in breast tumor surgical specimen. [PDF]

J Med Imaging (Bellingham), 2022
Vohra N, Liu H, Nelson AH, Bailey K, El-Shenawee M.   +4 more
europepmc   +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

Simulation-assisted multimodal deep learning (Sim-MDL) fusion models for the evaluation of thermal barrier coatings using infrared thermography and Terahertz imaging. [PDF]

Sci Rep
Purayil SKK, Aroliveetil S, Chaturvedi A, Balasubramaniam K.   +3 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

Non-destructive detection of early wheat germination via deep learning-optimized terahertz imaging. [PDF]

Plant Methods
Li G, Ge H, Jiang Y, Zhang Y, Jin X.
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

Terahertz Imaging Detects Oral Cariogenic Microbial Domains Characteristics. [PDF]

J Dent Res
Zhang A, Lei L, Cheng L, Yin H, Zhang C, Luo J, Wu F, Hu M, Cheng R, Hu T.   +9 more
europepmc   +1 more source

Terahertz imaging demonstrates its diagnostic potential and reveals a relationship between cutaneous dehydration and neuropathy for diabetic foot syndrome patients. [PDF]

Sci Rep, 2022
Hernandez-Cardoso GG, Amador-Medina LF, Gutierrez-Torres G, Reyes-Reyes ES, Benavides Martínez CA, Cardona Espinoza C, Arce Cruz J, Salas-Gutierrez I, Murillo-Ortíz BO, Castro-Camus E.   +9 more
europepmc   +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

High-Impact Polystyrene Structured Light Components for Terahertz Imaging Applications. [PDF]

Sensors (Basel)
Stanaitis K, Čižas V, Bielevičiūtė A, Grigelionis I, Minkevičius L.   +4 more
europepmc   +1 more source