Related by context. Frequent words. (Click for all words.) 57 beam splitter 57 X ray beam 57 electrophoretic 57 terahertz radiation 56 visible wavelengths 56 diffraction pattern 55 collimator 55 absorbance 55 shorter wavelengths 54 near infrared NIR 54 interferometric 54 transmittance 54 ultraviolet wavelengths 53 photoluminescence 53 photonic crystal 53 electron density 53 phonon 53 fluorescing 53 interferometers 52 photodetector 52 spectrographs 52 photocatalyst 52 fluorescent molecules 52 optical wavelengths 52 fluoresces 51 coronal 51 confocal microscopy 51 ionised 51 fluorophores 51 photometer 51 anisotropy 51 plasmons 51 InGaAs 51 diffractive 51 Ultraviolet light 51 irradiance 51 pulsed laser 51 dispersive 51 fluorescent dyes 51 transmissive 51 ganglion cells 51 surface plasmons 51 crystal lattice 50 spectrally 50 optically 50 dye molecules 50 scanning electron microscopy 50 chromophores 50 chromophore 50 electron spins 50 plasmonic 50 microscale 50 confocal 50 muon 50 rhodopsin 50 InGaN 50 excitons 50 reflectance 50 laser beams 50 fluorescent probes 50 anisotropic 50 diffraction limit 49 electrically conducting 49 fused silica 49 ultraviolet light 49 nm wavelength 49 microwave radiation 49 cyan 49 wavelengths 49 ultrasonic waves 49 SWNTs 49 microwave frequencies 49 crystallographic 49 MeV 49 Photons 49 rubidium atoms 49 sensor arrays 49 emissivity 49 Terahertz 49 scintillation 49 fluorescence 48 keV 48 laser pulses 48 silicon nitride 48 superlens 48 infrared beam 48 waveguides 48 luminescence 48 frequency comb 48 radially 48 excitation 48 infrared radiation 48 FRET 48 confocal microscope 48 gravitational lens 48 nanobubbles 48 UV light 48 laser pulse 48 bilayer 48 TFTs 48 entangled photons