Related by context. Frequent words. (Click for all words.) 73 interferometer 69 interferometry 65 frequency comb 63 InGaAs 63 amplitudes 63 shorter wavelengths 63 optical microscopy 61 optical telescopes 61 dispersive 61 photodetector 60 laser pulses 60 isotropic 60 diffraction 60 waveguides 60 photonic crystal 60 anisotropy 59 photonic crystals 59 redshifts 59 scanning tunneling microscope 59 VLBI 59 photodetectors 59 Tunable 59 synchrotron radiation 59 gravitational lensing 59 photodiodes 59 magnetic fields 59 adaptive optics 58 LIGO 58 optical tweezers 58 VCSELs 58 microwave frequencies 58 spectra 58 toroidal 58 X ray emission 58 radiometer 58 exciton 58 photons 58 wavefront 58 electron density 58 excitons 58 electron beams 58 terahertz radiation 58 femtosecond 58 waveguide 57 ionisation 57 visible wavelengths 57 Hubble observations 57 attosecond 57 spectrometry 57 beamline 57 excitations 57 magnetization 57 resonators 57 spectrometers 57 Raman spectroscopy 57 pulsed laser 57 planar 57 TFTs 57 colliders 57 antiprotons 57 photonic devices 57 FRET 57 gravitational wave 57 rubidium 56 parallax 56 dipole 56 optical microscope 56 spacetime 56 spectroscopy 56 magnetic flux 56 Superconducting 56 confocal 56 polarizations 56 anisotropic 56 SQUID 56 tunable lasers 56 muon 56 particle beam 56 Transducer 56 active galactic nuclei 56 wavelengths 55 photon 55 astronomical observations 55 optical telescope 55 diffractive 55 inertial sensors 55 spectroscopic 55 laser pulse 55 GeV 55 Nanotube 55 kinematic 55 absorbance 55 quantum entanglement 55 XMM Newton 55 WM Keck Observatory 55 picosecond 55 Photons 55 X ray beam 55 ultrasonics 55 spatial resolution 55 ionospheric