Thermally stabile GRISMs
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United States of America Patent
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Dec 11, 2007
Grant Date -
Jul 20, 2006
app pub date -
Jan 17, 2006
filing date -
Jan 14, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Thermally stable GRISMs comprise a substrate and cover plate composed of a first material keeps the spatial frequency of the grating stable with temperature, and a prism composed of a second material having lower thermal coefficient of refractive index than that of the first material. In the preferred embodiment, the first material is fused silica, and the second material is BK7 glass.
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