Related by context. Frequent words. (Click for all words.) 77 laser pulses 69 photons 69 photon 63 electron 63 electrons 62 wavelengths 60 atoms 60 electron beam 59 laser beam 59 quantum dot 59 magnetic fields 59 infrared laser 58 gamma rays 58 excitation 58 waveguide 58 hydrogen atoms 58 ions 57 laser beams 57 neutrons 57 ultraviolet light 57 filament 57 waveguides 57 oxygen atoms 57 protons 57 magnetization 57 resonator 56 molecule 56 nanorods 56 proton 56 filaments 56 nanocrystals 56 nuclei 56 qubit 56 fluorescence 55 molecules 55 nanotubes 55 gamma ray burst 55 metamaterial 55 quantum dots 55 vibrational 55 particle 55 diffraction 55 infrared radiation 55 UV light 55 nanotube 55 electrode 55 wavelength 54 particles 54 cosmic ray 54 ionized 54 magnetosphere 54 positrons 54 electrodes 53 electron spin 53 ionization 53 dipole 53 DNA strands 53 microscale 53 combustion chamber 52 nanopore 52 pulses 52 quasar 52 nanowire 52 cosmic rays 52 refractive index 52 nanowires 52 spectra 52 electromagnetic 52 neutron 52 millionths 51 infrared wavelengths 51 nanostructure 51 electrical impulses 51 radioactive decay 51 optical fibers 50 outer layers 50 optically 50 nanometer scale 50 ionosphere 50 spectroscopic 50 droplet 50 galaxy clusters 50 μm 50 gamma ray 50 neutrino 50 atomic particles 50 spectrometer 49 neutron star 49 electrical pulses 49 electrochemical 49 micrometer 49 conductance 49 piezoelectric 49 nanofibers 49 vortices 49 oscillations 49 electromagnetic waves 49 nanostructures 49 conductivity 49 gamma ray bursts 49 nanoparticles