Loading patent…
AssigneesShin-Etsu Quartz Products Co., Ltd., Opto-Electronics Laboratory, Inc.
InventorsTetsuji Ueda, Michinari Ohuchi, Hiroyuki Nishimura, Akira Fujinoki, Masahiro Nakatsuka, Hidetsugu Yoshida
Estimating the term…
It is an object of the present invention to provide a copper-containing silica glass which emits fluorescence having a peak in a wavelength range of from 520 nm to 580 nm under irradiation of ultraviolet light with a wavelength of 400 nm or less, and which is excellent in long term stability even in the high output use. The copper-containing silica glass is made to have copper of from 5 wtppm to 200 wtppm, which emits fluorescence having a peak in a wavelength range of from 520 nm to 580 nm under irradiation of ultraviolet light with a wavelength ranging from 160 nm to 400 nm, and in which an internal transmittance per 2.5 mm thickness at a wavelength of 530 nm is 95% or more.
A method of producing copper-containing silica glass, comprising:
A method of producing a silica glass tube that includes copper-containing silica doped in a solution containing copper ions, comprising
Dependencies are inferred from the claim text.