optics   3929

« earlier    

One measure of spatial resolution is known as the Full-Width at Half Max (FWHM) resolution, and is probably the correct method to accurately determine the resolving Power of the camera.
22 days ago by agmarrugo
Angular-momentum nanometrology in an ultrathin plasmonic topological insulator film | Nature Communications
New detector size of normal laser detectors can now detect "twist" of light, to add new encoding dimension for data compression on optical fiber
CMOS  optical  angular  momentum  plasmonic  nanometrology  topological  insulator  materials  science  optics  research  OAM 
25 days ago by asteroza
Single-shot real-time femtosecond imaging of temporal focusing | Light: Science & Applications
While the concept of focusing usually applies to the spatial domain, it is equally applicable to the time domain. Real-time imaging of temporal focusing of single ultrashort laser pulses is of great significance in exploring the physics of the space–time duality and finding diverse applications. The drastic changes in the width and intensity of an ultrashort laser pulse during temporal focusing impose a requirement for femtosecond-level exposure to capture the instantaneous light patterns generated in this exquisite phenomenon. Thus far, established ultrafast imaging techniques either struggle to reach the desired exposure time or require repeatable measurements. We have developed single-shot 10-trillion-frame-per-second compressed ultrafast photography (T-CUP), which passively captures dynamic events with 100-fs frame intervals in a single camera exposure. The synergy between compressed sensing and the Radon transformation empowers T-CUP to significantly reduce the number of projections needed for reconstructing a high-quality three-dimensional spatiotemporal datacube. As the only currently available real-time, passive imaging modality with a femtosecond exposure time, T-CUP was used to record the first-ever movie of non-repeatable temporal focusing of a single ultrashort laser pulse in a dynamic scattering medium. T-CUP’s unprecedented ability to clearly reveal the complex evolution in the shape, intensity, and width of a temporally focused pulse in a single measurement paves the way for single-shot characterization of ultrashort pulses, experimental investigation of nonlinear light-matter interactions, and real-time wavefront engineering for deep-tissue light focusing.
optics  physics 
5 weeks ago by whitequark

« earlier    

related tags

-  1656  1st  2masto  3d  aesthetics  angular  ar  artist  assembly  astronomy  autofocus  beam  birdbath  blogs  camera  camera_lucida  camera_obscura  cameras  cars  center  christiaanhuygens  cmos  cnn  color  colour  communications  companies  company  computation  computational  computing  concentrator  conference  consistency  constraints  continuous  controls  convolution  cs  cubesate  culture  custom  darkmatter  data  datacenter  deeplearning  design  devices  diamond  diffraction  diffractive  directed  display  displays  diy  dof  ebook  edge  editing  education  elearning  electronics  engineering  explained  extraterrestrial  eyes  eyesight  fabbing  fast  favorites  fibres  filter  focus  focusing  focusshift  fp  france  free  fresnel  fso  future  glasses  google  grating  gravity  gyroscope  hardware  haskell  haskellx  health  history  hmd  hologram  holographic  holography  homemade  howto  illusions  image  imaging  imaing  information  infrared  insulator  internet  ir  kedsupply  landscape  laser  lasercomm  layering  lecture  lectures  led  lens  lense  lenses  lidar  life  light  lightguide  lighting  machine_learning  manualfocus  manufacturing  materials  math  mechanics  medicine  mems  meta-lens  metafilm  metamaterial  metamaterials  micromirror  mirasol  mirror  mit  momentum  motion  mri  muscle  music  nanometrology  nanophotonic  network  neural  neutron  newport  nuclear  nvidia  oam  object  observation  ophthalmology  optical  optimization  optometry  oxygen  painting  parameters  paris  particle  particles  pendulum  people  photography  physics  plasmonic  point  portable  printing  probability  profunctor  programming  projection  propulsion  quantum  quantumcommunication  quantumcomputing  qubit  read-later  recovery  reference  reflector  remote  renedescartes  research  retinal  rotation  sail  satellite  scalability  scanning  science  sciencefiction  selfdrivingcars  sensing  sensor  simulator  sketching18  sled  solar  solid  sound  spac  space  spookyactionatadistance  sportstech  standardmodel  startup  state  steering  style  sustainable  teaching  technology  telescope  thermal  tools  topological  toroidal  training  tutorial  variance  varifocal  video  visible  vision  visual  vlc  wafer  water  wave  waveguide  wearable  webcam  weird  wet  zoom  ★★★★☆ 

Copy this bookmark: