Results 91 to 100 of about 134,290 (279)

Advancing Localization Optoacoustic Tomography Using Experimentally‐Derived Effective Point Spread Functions

Laser &Photonics Reviews, EarlyView.
This study presents an improved technique for Localization Optoacoustic Tomography using experimentally‐derived effective point spread functions. The method significantly enhances sub‐pixel localization performance, with applicable potential to relatively under‐sampled scenarios and other imaging modalities, paving the way for new frontiers in super ...
Hongtong Li, Haiyang Zhan, Daniil Nozdriukhin, Lin Tang, Hongjing Cao, Rui Ma, Tingkai Yan, Luyuan Feng, Zheng You, Daniel Razansky, Xose Luis Dean‐Ben, Fei Xing   +11 more
wiley   +1 more source

Compact Spectral Imaging: A Review of Miniaturized and Integrated Systems

Laser &Photonics Reviews, EarlyView.
This review explores the rapid shift toward compact spectral imaging systems by examining four key design paradigms: Do‐It‐Yourself (DIY) platforms, freeform optics, filter‐on‐chip integration, and multifunctional metasurfaces. The discussion highlights critical applications in medicine, agriculture, and environmental monitoring, providing comparative ...
Sani Mukhtar, Amir Arbabi, Jaime Viegas
wiley   +1 more source

A decametric wavelength radio telescope for interplanetary scintillation observations [PDF]

A phased array, electrically steerable radio telescope (with a total collecting area of 18 acres), constructed for the purpose of remotely sensing electron density irregularity structure in the solar wind, is presented.
Cronyn, W. M., Shawhan, S. D.
core   +1 more source

Limits on the quiescent radio emission from the black hole binaries GRO J1655-40 and XTE J1550-564

, 2010
We present the results of radio observations of the black hole binaries GRO J1655-40 and XTE J1550-564 in quiescence, with the upgraded Australia Telescope Compact Array. Neither system was detected.
Bell, M. E., Calvelo, D. E., Corbel, S., Fender, R. P., Gallo, E., Lewis, F., Maccarone, T. J., Russell, D. M., Tzioumis, A. K.   +8 more
core   +1 more source

Generation of Two‐Cycle Light Bullets With 2.0 mJ Energy via Self‐Compression of 5‐µm Pulses in Zinc Sulfide

Laser &Photonics Reviews, EarlyView.
Simultaneous temporal soliton self‐compression with simultaneous formation of a radial Townes profile is reported for millijoule pulses at 4.9 µm wavelength in ZnS. Pulses as short as 37 fs are generated in a 1‐kHz pulse train. The compression regime appears below the onset of filamentation, yielding two‐cycle pulses with 2.0 mJ energy which translates
Martin Bock, Dennis Ueberschaer, Günter Steinmeyer, Uwe Griebner   +3 more
wiley   +1 more source

Observations and properties of candidate high frequency GPS radio sources in the AT20G survey

, 2010
We used the Australia Telescope Compact Array (ATCA) to obtain 40 GHz and 95 GHz observations of a number of sources that were selected from the Australia Telescope Compact Array 20 GHz (AT20G) survey .
Agüeros, Barvainis, Burgess, Colless, Condon, Cornwell, Drake, Eisenstein, Elaine M. Sadler, Elizabeth K. Mahony, Flesch, Fomalont, Fukugita, Griffith, Hambly, Hancock, Healey, Healey, Hovatta, Jarrett, Jauncey, Johnston, Jones, Jones, Lamy, Ma, Mauch, Moorey, Murphy, O'Dea, Paul J. Hancock, Ricci, Roberto Ricci, Sadler, Sadler, Saikia, Sault, Saunders, Shimmins, Simard-Normandie, Snellen, Tago, Torniainen, Tornikoski, Turriziani, Valdes, Voges, Wolter, Wright, Wright, Wright   +50 more
core   +1 more source

Reversal Asymmetry of Reciprocal Metasurface Enables Ultra‐Compact Varifocal Reflective Lens

Laser &Photonics Reviews, EarlyView.
The possibility of breaking the reversal symmetry of a lens without violating reciprocity is demonstrated. The freedom provided is utilized to realize an ultra‐compact reflective varifocal lens‐doublet based on a flat metasurface lens and a piezoelectric actuated micromirror.
Christopher A. Dirdal, Jesil Jose, Firehun Tsige Dullo, Grégory Bouquet, Paul C. V. Thrane, Zeljko Skokic, Johannes Skaar   +6 more
wiley   +1 more source

The Sardinia Radio Telescope

, 2018
In this talk, I will review the current status of the Sardinia Radio Telescope and the near-future technical developments. In particular, I will discuss the new generation receivers and focus on the spectroscopic capabilities of the telescope and on the impact that the SRT could have in the field of star formation .
openaire   +2 more sources

Metasurfaces in Adaptive Optics: A New Opportunity in Optical Wavefront Sensing

Laser &Photonics Reviews, EarlyView.
Wavefront sensing constitutes a critical component of adaptive optics systems, aimed at quantitatively measuring distorted wavefronts and enabling closed‐loop correction in optical setups. Metasurfaces, as planar optical elements composed of nanoscale structures, provide exceptional freedom in modulating multiple dimensions of the light field.
Rundong Fan, Zichao Wang, Pei Li, Lei Huang   +3 more
wiley   +1 more source

FIRST "Winged" and X-shaped Radio Source Candidates: II. New Redshifts

, 2008
We report optical spectroscopic observations of X-shaped radio sources with the Hobby-Eberly Telescope and Multiple-Mirror Telescope, focused on the sample of candidates from the FIRST survey presented in Paper I (Cheung 2007).
Adelman-McCarthy, Andrés Jordán, Bonning, C. C. Cheung, Cheung, Condon, de Koff, de Vaucouleurs, Fanaroff, Gijs Verdoes Kleijn, Hermine Landt, Komossa, Komossa, Leahy, Leahy, Lehár, Machalski, Miller, Monet, Owen, Rottmann, Saripalli, Schlegel, Stephen E. Healey, Tadhunter, Ulrich, Urry, Zirbel   +27 more
core   +1 more source