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  • Laser Tuning with Diffraction Gratings
    Light incident on a diffraction grating is dispersed away from the grating surface at an angle which depends on the wavelength, so a grating can be used to select a narrow spectral band from a much wider band. There are two main methods for selecting a narrow spectral band of light, Littrow
  • Introduction to reflective aberration corrected holographic diffraction gratings
    The reflective diffraction grating is the heart of most spectroscopy systems today. Before the 1950's, the prism. was the primary dispersive element in spectrometer designs. The use of an epoxy replication process in the. 1950's led to the mass production of plane ruled reflective diffraction
  • Introduction to Reflective Aberration Corrected Holographic Diffraction Gratings (.zip file)
  • Diffraction, Fourier Optics and Imaging - Preface
    that allow. diffraction to be expressed in terms of the Fourier transform. As a special application. area for these approximations, diffraction gratings with many uses are described. Diffraction is usually discussed in terms of forward wave propagation. Inverse. diffraction covered in Chapter 6
  • Seeing In Nanometers: Laser And Gratings Make Tiny Motions Visible To Human Eye
    grating layer is hidden below the first. The area of the grating itself is 10 X 10 mm. The scale bar at bottom represents 10 mm. A researcher studies tiny motions formerly invisible to the human eye, using a laser beam interacting with a diffraction grating fabricated at Sandia's Microelectronic
  • High Spatial Resolution Measurement of Volume Holographic Gratings
    , the motion of the diffracted beam from reflection gratings requires the detector to move with it, or otherwise the range of angles must be limited. Furthermore it is often difficult to separate the diffraction from the specular surface reflections, increasing the error of the measurement. In the latter
  • Compact Self-aligned External Cavity Lasers Using Volume Gratings (.pdf)
    We experimentally demonstrate a compact self-aligned external cavity 25W high power laser diode bar at 976 nm tunable over 0.5 nm with a bandwidth of 0.25 nm. The external cavity is based on double diffraction from a glass reflective volume holographic grating (VHG). The wavelength tuning
  • Laser Stabilization with PowerLockerTM VHG
    and astronomy. In comparison with conventional thin diffraction gratings, which angularly spread the spectral content of a light beam, thick gratings are not dispersive. Hence, they exhibit filter-like properties but with more selective spectral and spatial features than other filtering technologies.

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