OPTICAL ELEMENT, TITANIUM-CONTAINING OXIDE GLASS USED FOR THE OPTICAL ELEMENT, AND LIGHT EMITTING METHOD AND LIGHT AMPLIFYING METHOD USING THE TITANIUM-CONTAINING OXIDE GLASS
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United States of America Patent
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Issued Date -
Jan 28, 2010
app pub date -
Jan 31, 2008
filing date -
Feb 2, 2007
priority date (Note) -
Abandoned
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Abstract
An optical element of the present invention exhibits at least one of an upconversion emission characteristic and a light amplifying characteristic when irradiated with an excitation light. The optical element includes a bulk glass that contains titanium oxide as a main component, and the glass further contains a rare earth element. As the rare earth element, at least one element of Er and Yb, or a combination of Yb and Tm preferably is used, for example.
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