Related by context. Frequent words. (Click for all words.) 61 femtosecond laser 60 interferometry 59 photonic crystal 59 electron beam 59 nm wavelength 59 lasers 59 photodetector 58 laser ablation 58 laser 58 laser pulses 58 electron beams 58 infrared laser 58 waveguide 57 InGaAs 57 laser pulse 57 quantum dots 57 infrared IR 57 diffractive 56 PZT 56 phosphors 56 laser beam 56 uncooled 56 terahertz 55 X ray beam 55 quantum dot 55 visible wavelengths 55 photodiodes 55 infrared 55 fiber lasers 55 confocal 55 VCSEL 54 laser diode 54 photodetectors 54 terahertz radiation 54 ion beam 54 combustor 54 photodiode 54 laser diodes 54 diodes 54 diode laser 54 wavefront 54 photons 54 diffraction 54 excimer laser 54 fluorescent dye 54 plasmons 53 optical microscope 53 microwave frequencies 53 lasing 53 waveguides 53 Pulsed 53 toroidal 53 particle beam 53 THz 53 absorbance 53 photon 53 tunable 53 imager 53 X ray emission 53 photonic crystals 53 interferometer 53 silicon nitride 52 diode lasers 52 porous silicon 52 Quantum dots 52 wavelengths 52 confocal microscopy 52 Tunable 52 excitons 52 femtosecond 52 optically 52 planar 52 venturi 52 microbubbles 52 SQUID 52 infrared beam 52 infra red 52 UV LED 51 diode 51 FRET 51 isotropic 51 ultraviolet UV 51 fluorescent dyes 51 spectroscopy 51 optical microscopy 51 tunable lasers 51 CCD camera 51 nitride 51 rubidium 51 pulsed 51 transmissive 51 sine wave 51 sinusoidal 51 antiprotons 51 silicon substrate 51 irradiance 51 TFTs 51 transmission electron microscope 51 micromachining 51 tunable laser 51 photonic devices