Related by context. Frequent words. (Click for all words.) 60 wavelengths 54 photons 54 blue violet 54 infrared wavelengths 52 phosphors 52 wavelength 51 laser diodes 51 reflectivity 51 redshift 50 fluorescent dyes 49 diode lasers 49 photon 48 interferometry 48 bandgap 48 fluorescence 48 quantum dots 48 #nm [002] 48 electron spin 48 spatial resolution 48 photodiodes 48 light emitting diodes LEDs 48 positrons 48 rewritable 48 infrared radiation 47 X ray emission 47 photonic crystals 47 denser 47 optical telescopes 47 distant galaxies 47 infrared 47 diffraction 47 nanocrystal 47 spectroscopic 46 polycrystalline 46 fluoresce 46 multispectral 46 CCDs 46 reflectance 46 photodiode 46 deuterium 46 phosphor 46 titanium oxide 46 fluorescent proteins 46 optical 45 quasars 45 electron mobility 45 tunable 45 neutrons 45 HD #b [002] 45 Double Layer 45 CMOS sensors 45 lasers 45 quantum dot 45 semiconductor lasers 45 ultraviolet light 45 LEDs 45 #μm [001] 45 laser pulses 45 THz 45 unaided eye 45 ultraviolet 45 waveguides 45 GRBs 45 elliptical galaxies 44 supernova remnant 44 nm 44 radiative 44 silicon germanium 44 nanocrystals 44 supernovae 44 photolithography 44 laser diode 44 light emitting 44 gamma rays 44 spectra 44 magnetization 44 nanorods 44 light emitting diodes 44 terahertz 44 Fluorescence 44 ferroelectric 44 gravitational lensing 44 ferromagnetic 44 neutrinos 44 electrons 44 diodes 44 brightness 44 fainter 43 femtosecond 43 nuclei 43 nanometers 43 cosmic rays 43 magnetic fields 43 pixels 43 interstellar dust 43 nitride 43 refractive index 43 qubit 43 spectroscopy 43 hydrogen atoms 43 plasmonic