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  • High Spatial Resolution Measurement of Volume Holographic Gratings
      with   a   tunable-wavelength   laser   and. dispenses with rotation of the wafer. The laser is then tuned through the Bragg peak to measure the peak diffraction. efficiency. While this eliminates one axis of motion,  and depending on the properties of the tunable laser and. detectors could be faster
  • Single Longitudinal Mode Blue-Violet Laser Diode for Data Storage
    blue-violet laser diode source with a long coherence length and some level of wavelength tuning. Prior approaches, such as external cavities with diffraction gratings [1], have been used to generate single longitudinal mode tunable lasers near 405 nm. Such cavities require a very low reflectivity
  • Medical Device Link .
    of metamaterial design is a lattice of identical building blocks, each smaller than the wavelength of the light or sound wave with which the material is designed to interact. As a result, when waves move through the material they do not see the individual blocks, but respond to the. MPMN: July '06
  • Scanning Lens Theory (.pdf)
    of the birefringence dictates. whole waves plus the fractional retardation required. that the spectral range for the standard waveplate is. approximately 10 nm. To accommodate tunable sources. or sources with larger spectral widths, a waveplate that is. Temperature, Wavelength and Angle of relatively
  • Retardation Plate Theory (.pdf)
    of the birefringence dictates. whole waves plus the fractional retardation required. that the spectral range for the standard waveplate is. approximately 10 nm. To accommodate tunable sources. or sources with larger spectral widths, a waveplate that is. Temperature, Wavelength and Angle of relatively
  • Retardation Plate Theory
    of the birefringence dictates. whole waves plus the fractional retardation required. that the spectral range for the standard waveplate is. approximately 10 nm. To accommodate tunable sources. or sources with larger spectral widths, a waveplate that is. Temperature, Wavelength and Angle of relatively
  • Near IR Spectroscopy in Process Analysis
    in process analysis?. Interest in NIR grew quickly in the 1980s due to the advent of fiber optics, bright light sources and sensitive detectors. NIR also solved some of the difficult sampling techniques characteristic of IR, because NIR optical paths through liquid samples may be millimeters or even
  • Workstation for Laser Direct-Write Processing (.pdf)
    . materials can be used as a chemical handle to fabricate. light in a linear fashion and heating effects play an important. structures with tunable physical and chemical properties. role in the quality of the created patterns. If ultrashort (less. such as hardness, shrinkage, index of refraction and chemical
  • Advanced Test Equipment Can Shorten Time to Market for New Fiber Optic Communication Gear
    . systems) technology in its tunable products. This technology uses tiny movable. mirrors to change the wavelength of its semiconductor lasers. Besides its other. advantages, such tunability opens up the potential for optical networks to change. wavelengths in real time, so traffic can be monitored
  • Helping the S.A.L.T. Telescope See Further into the Cosmos
    . It takes images, diffracts. the light into infrared spectra,. captures images in single shades. RSS-VIS beam. RSS-NIR beam. of infrared colors via a tunable. Dewar -150°C. Fabry-Perot etalon and narrow. HOW. band filters, and measures the. THE. degree of light polarization. Detector &. Field