Recent advances in the physics and technology of light generation via free-electron proximity and impact interactions with nanostructures (gratings, photonic crystals, nano-undulators, metamaterials and antenna arrays) have enabled the development of nanoscale-resolution techniques for such applications as mapping plasmons, studying nanoparticle structural transformations and characterizing lum...

The Pohang Light Source (PLS) is a national users’ facility for basic and applied science research using synchrotron radiation. It consists of a 2-GeV linac as a full-energy injector and a low-emittance, thirdgeneration storage ring. It has been serving users since September of 1995. The beamlines have been increased from two to eight units as the increased number of users. The first undulator,...