| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide transparent crystallized glass having a form of an optical fiber type or an optical integrated circuit utilizing shaping properties of glass and excellent in connection consistency with a glass optical fiber, which is obtained by utilizing a process for further increasing the second-order optical nonlinearity to a transparent crystallized glass material exhibiting the second-order optical nonlinearity. <P>SOLUTION: The method for manufacturing the second-order optical nonlinear transparent crystallized glass is characterized by first preparing crystallized glass by depositing a crystal in glass having a glass transition temperature of T<SB>g</SB>°C and a crystallization peak temperature of T<SB>c</SB>°C, then heating the crystallized glass to a temperature of not lower than (T<SB>c</SB>-60)°C and not higher than (T<SB>c</SB>+10)°C, and cooling the crystallized glass to (T<SB>g</SB>-300)°C at a cooling rate of≥0.2°C/min. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
