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“#Physicist optimizes DNA microscopy technique to improve imaging speed, add color” Credit: S. Strauss/MPI of Biochemistry Super-resolution fluorescence microscopy can be used to visualize structures smaller than 200 nanometers, i.e., below the diffraction limit of light. One of the microscopy techniques, called DNA-PAINT, was developed by Ralf Jungmann, research group leader at the MPI of…
“#On-chip spin-Hall nanograting for simultaneously detecting phase and polarization singularities” Schematic of the designed structure under illumination of two OAM beams with different polarization states and topological charges Credit: Fu Feng, Guangyuan Si, Changjun Min, Xiaocong Yuan, Michael Somekh A plasmonic spin-Hall nanograting structure that simultaneously detects both the polarization and phase singularities of the…
“#Liquid crystal integrated metalens for versatile color focus” Liquid-crystal integrated metalens. Credit: Zhixiong Shen et al., Nanjing University. The development of metasurfaces opened a horizon for the advance of planar optics. Among metadevices, the metalens has attracted widespread attention for practical applications in imaging and spectroscopy, as it provides multifunctional wavefront manipulations for improved focus….
“#Leap in lidar could improve safety, security of new technology” A silicon chip with a tiled array of serpentine optical phased array (SOPA) tiles. The 32 tiles in the 8-by-4 array have slightly differing grating designs, showing here two matching pairs of tiles “lighting up” at this viewing angle. Drawn superimposed are beams from two…
“#Highest peak power and excellent stability demonstrated in a laser” Long term stability of the Ho:YLF chirped pulse amplifier at a 1 kHz repetition rate. The average pulse energy Emean=52.5 mJ was measured over a period of 120 minutes. The standard deviation has a value of σrms=0.23%, the pulse-to-pulse energy fluctuations are ΔEp-to-p=2.1%. Left inset:…
“#Red-light LEDs for next-generation displays” Optimizing the geometry, fabrication and electrical contacts is vital to maximizing the efficiency of the LED. Credit: Zhuag et al. Novel red LEDs are more temperature stable than those made using the conventional semiconductor of choice. In efforts to optimize the performance of light-emitting diodes (LEDs), King Abdullah University of…
“#Toward lasers powerful enough to investigate a new kind of physics” Credit: Pixabay/CC0 Public Domain In a paper that made the cover of the journal Applied Physics Letters, an international team of researchers has demonstrated an innovative technique for increasing the intensity of lasers. This approach, based on the compression of light pulses, would make…
“#New method measures temperature within 3-D objects” An infrared image of the fused silica window used to test the depth thermography concept. For the project, the team heated the silica, a type of glass, and analyzed it using a spectrometer. They then measured temperature readings from various depths of the sample. Credit: Mikhail Kats University…
“#Looping X-rays to produce higher quality laser pulses” Schematic arrangement of the experiment. The researchers send an X-ray pulse from LCLS through a liquid jet, where it creates excited atoms that emit a pulse of radiation at one distinct color moving in the same direction. This pulse is reflected through a series of mirrors arranged…
“#Laser takes pictures of electrons in crystals” by E. Goulielmakis, H. Lakhotia, H.-Y. Kim, M. Zhan, S. Hu, S. Meng, University of Rostock </p><div> <div> <div data-src=”https://scx2.b-cdn.net/gfx/news/2020/lasertakespi.jpg” data-sub-html=”Electrons in the crystal of calcium fluoride. Credit: Christian Hackenberger/University of Rostock” data-thumb=”https://scx1.b-cdn.net/csz/news/tmb/2020/lasertakespi.jpg”> <figure><img alt=”Laser takes pictures of electrons in crystals” height=”480″ src=”https://scx1.b-cdn.net/csz/news/800/2020/lasertakespi.jpg” title=”Electrons in the crystal of…