Related by context. Frequent words. (Click for all words.) 60 electromagnetic waves 59 terahertz radiation 59 electrical currents 58 Photons 57 magnetic fields 57 infrared radiation 57 milliwatt 56 photodetector 56 microwave frequencies 56 terahertz 56 infrared rays 56 shorter wavelengths 55 laser pulses 55 visible wavelengths 55 electron beams 55 interferometry 55 X ray beam 55 photons 55 photodiode 55 wavelengths 54 electromagnetic radiation 54 MeV 54 resonant frequency 54 absorbance 53 ultrasonic waves 53 electromagnetic 53 frequency comb 53 InGaAs 53 bandgap 53 impedance 53 milliwatts 53 THz 53 photonic crystal 53 diffraction 52 radiations 52 amplitudes 52 photodetectors 52 infrared beam 52 infrared 52 magnetic pulses 52 wavelength 52 photonic crystals 52 omnidirectional 52 voltages 51 CCD camera 51 #μm [001] 51 transmittance 51 excitations 51 infra red 51 photodiodes 51 resonators 51 ionizing 51 alpha particles 51 millimeter wave 51 thermal dissipation 51 SQUID 51 optical microscopy 51 vibrational 51 plasmons 51 fluorescence 51 redshift 51 electromagnetic interference EMI 51 solar corona 51 dye molecules 50 cosmic rays 50 microwaves 50 gamma rays 50 refractive index 50 X ray beams 50 radiometer 50 photon 50 sensor 50 conductance 50 picosecond 50 optical telescopes 50 dielectric constant 50 isotropic 50 infrared wavelengths 50 bone conduction 50 infrared laser 50 reflectance 50 temperature coefficient 50 waveguides 50 dopant 50 Terahertz 50 irradiance 50 cosmic radiation 50 plasmonic 49 photonic devices 49 radiative 49 waveguide 49 CCD sensor 49 confocal microscopy 49 ionosphere 49 fluorescence microscopy 49 6GHz 49 TFTs 49 ultra violet rays 49 magnetic flux 49 spatial resolution 49 spectrometry