Related by context. Frequent words. (Click for all words.) 65 laser pulse 59 infrared laser 59 laser pulses 58 infrared beam 58 X ray beam 58 photodetector 58 exciton 56 dye molecules 56 millivolts 56 interferometric 55 excitons 55 microelectrodes 55 ultrasonic waves 55 picosecond 55 frequency comb 54 resonator 54 X ray beams 54 Earth magnetosphere 54 terahertz radiation 54 electron spins 54 electrode 54 femtoseconds 54 electrically conducting 54 electrodes 54 photonic crystal 54 silicon atoms 53 antiprotons 53 photon 53 spectrographs 53 waveguides 53 atomic nuclei 53 near infrared NIR 53 magnetic fields 53 picoseconds 53 fluorophores 53 photons 53 micron thick 53 infrared rays 53 angstrom 53 photometry 53 fluorescing 53 gold nanorods 52 shorter wavelengths 52 micrometres 52 interferometers 52 collimator 52 laser beams 52 Gamma rays 52 micrometer 52 muon 52 optical microscope 52 oxygen atom 52 scanning tunneling microscope 52 photometer 52 optical wavelengths 52 infrared wavelengths 52 femtosecond 52 chromophores 52 visible wavelengths 52 hydrogen atoms 52 subatomic particle 51 GeV 51 interferometer 51 electromagnet 51 photocell 51 filament 51 Photons 51 trillionths 51 resonant frequency 51 nanoshells 51 particle beam 51 solar corona 51 ionized gas 51 keV 51 colliders 51 dipole 51 oxygen atoms 51 atoms 50 quantum dot 50 nanowire 50 particle beams 50 pulsed laser 50 nanorods 50 femtosecond laser 50 quartz crystal 50 nanocrystal 50 nanospheres 50 WIMPs 50 planet orbits 50 electrochemical reaction 50 dipoles 50 photodiodes 50 milliwatt 50 millionths 50 muons 50 oscillatory 50 alpha particles 50 absorbance 50 nanometers nm 50 nanotube 50 ionised