Results 151 to 160 of about 9,812 (256)

Reassessing Rujm el-Hiri: Aerial imagery and stone circles in the proto-historic Southern Levant. [PDF]

PLoS One
Birkenfeld M, Khabarova O, Eppelbaum LV, Berger U.   +3 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

Ultrahigh‐Order Harmonic Mode‐Locked Optoelectronic Oscillator

Laser &Photonics Reviews, EarlyView.
This article demonstrates a record‐breaking microwave frequency comb generator using an ultrahigh‐harmonic‐order mode‐locked optoelectronic oscillator. By integrating dual recirculating loops into a low‐coherence system, the researchers achieved a harmonic order of 956 with superior noise suppression.
Zhuoran Wang, Santiago Bernal, David V. Plant, Lawrence R. Chen   +3 more
wiley   +1 more source

Textual interpretation of transient image classifications from large language models. [PDF]

Nat Astron
Stoppa F, Bulmus T, Bloemen S, Smartt SJ, Groot PJ, Vreeswijk P, Smith KW.   +6 more
europepmc   +1 more source

Modern techniques in astronomical photography proceedings of the ESO Workshop on Modern Techniques in Astronomical Photography held in Geneva, Switzerland, May 16-18, 1978

, 1978
West, Richard M. 1941-, Workshop on Modern Techniques in Astronomical Photography 1978 Genf   +1 more
core  

Optical Skyrmions with Tunable or Reconfigurable Topology Using Spin‐Decoupled Metaoptics

Laser &Photonics Reviews, EarlyView.
The work introduces advanced optical elements capable of generating and dynamically reconfiguring complex light patterns known as optical skyrmions. By precisely shaping light polarization at the nanoscale, a single engineered metasurface can generate and manipulate robust and tunable polarization textures in an efficient and scalable way.
Andrea Vogliardi, Daniele Bonaldo, Simone Dal Zilio, Vittorio Apolloni, Filippo Romanato, Gianluca Ruffato   +5 more
wiley   +1 more source

Experimental Verification of Model-Based Wavefront Sensorless Adaptive Optics System for Large Aberrations. [PDF]

Micromachines (Basel)
Yang H, Miao Y, Chen P, Zhang Z, Yan Z.
europepmc   +1 more source

A review of source detection approaches in astronomical images

Astronomical images provide information about the great variety of celestial objects in the Universe, the physical processes taking place in it, and the formation and evolution of the cosmos.
Peracaula i Bosch, Marta, Masias Moyset, Marc, Freixenet i Bosch, Jordi, Lladó Bardera, Xavier   +3 more
core  

Near‐Infrared Polarimetric Imaging With Nonlinear Flat‐Optics

Laser &Photonics Reviews, EarlyView.
ABSTRACT A compact and broadband polarimetric imaging platform is presented, based on second‐harmonic generation (SHG) in nonlinear flat‐optics. The system employs periodic all‐dielectric AlGaAs gratings to induce polarization‐dependent SH emission, enabling pixel by pixel direct retrieval of the full Stokes vector from an input intensity distribution ...
Evgenii Menshikov, Marco A. López Sánchez, Paolo Franceschini, Andrea Tognazzi, Domenico de Ceglia, Kristina Frizyuk, Costantino De Angelis   +6 more
wiley   +1 more source

A Tunable Catadioptric Spectrometer with Bragg-Condition-Preserving Rotation for High-Resolution Spectroscopy. [PDF]

Sensors (Basel)
Yao Z, Ren S, Wang X, Zuo D.
europepmc   +1 more source