Related by context. Frequent words. (Click for all words.) 53 photodetector 51 microwave frequencies 50 lasing 50 electromagnetic 49 radiative 49 nm wavelength 49 diffraction 48 photonic crystal 48 visible wavelengths 48 Pulsed 48 infrared beam 47 refractive index 47 shorter wavelengths 47 InGaAs 47 resonators 47 sensor detects 47 dopants 47 absorbance 46 bandgap 46 infrared 46 anisotropy 46 ionospheric 46 interferometry 46 isotropic 46 picosecond 46 auroral 46 ionizing 46 ionization 46 dipole 46 laser beams 45 dopant 45 phonons 45 SQUID 45 conductivity 45 infrared IR 45 directional antenna 45 photodiode 45 ferromagnetic 45 magnetization 45 laser pulse 45 terahertz radiation 44 FOV 44 multispectral 44 excitons 44 plasmons 44 photon 44 laser pulses 44 spectrometry 44 sinusoidal 44 electro magnetic 44 anisotropic 44 surface roughness 44 electromagnetics 44 exciton 44 spectroscopy 44 Photons 44 detector 44 diffractive 43 excitation 43 electron beams 43 amplitudes 43 interferometer 43 inertial navigation 43 ultrasonic waves 43 infra red 43 ionosphere 43 parallax 43 spectroscopic 43 scalar 43 reflectivity 43 refraction 43 Electrostatic 43 cosmic ray 43 sensor 42 vibrational 42 lasers 42 vaporize 42 reticle 42 alpha particles 42 #μm [002] 42 wavefront 42 radiometer 42 waveguides 42 piezo 42 femtosecond 42 ionized 42 adsorbed 42 THz 42 ion beam 42 optical microscopy 42 infrared radiation 42 spectra 42 conductance 42 electron 41 synthetic aperture radar 41 muons 41 femtosecond laser 41 bosons 41 synchrotron radiation 41 optic 41 inertial