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Photonics Spectra
Apr 2004
Newport CorporationRequest Info
LASER-GRADE WINDOWS For diffraction-limited laser-based microscopy, intracavity laser applications, holography and multiphoton imaging, Newport Corp. has unveiled a line of low-distortion, low-scatter laser-grade windows with a surface flatness of λ/20 and scratch-dig of 10-5. Available in both BK 7 glass and UV-grade fused silica, they achieve parallelism of <30 arc sec. Diameters range from 1/2 to 2 in., and the windows come in thicknesses of 0.24 or 0.39 in. Intended for use in research laboratories and R&D programs, they also are suitable for OEM applications that require low wavefront distortion.


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The optical recording of the object wave formed by the resulting interference pattern of two mutually coherent component light beams. In the holographic process, a coherent beam first is split into two component beams, one of which irradiates the object, the second of which irradiates a recording medium. The diffraction or scattering of the first wave by the object forms the object wave that proceeds to and interferes with the second coherent beam, or reference wave at the medium. The resulting...
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