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    • 62. 发明专利
    • Synthetic quartz glass material for optical use and method for evaluating synthetic quartz glass for optical use
    • 用于光学使用的合成石英玻璃材料和用于评估用于光学使用的合成石英玻璃的方法
    • JP2005029452A
    • 2005-02-03
    • JP2003273720
    • 2003-07-11
    • Shinetsu Quartz Prod Co Ltd信越石英株式会社
    • UEDA TETSUJIOUCHI MICHINARINISHIMURA HIROYUKIFUJINOKI AKIRA
    • G01N21/84C03B8/04C03B20/00C03C3/06C03C4/00G02B1/02
    • C03B19/1453C03B32/00C03B2201/075C03B2201/21C03B2201/23
    • PROBLEM TO BE SOLVED: To provide a synthetic quartz glass material for an optical use whose refractive index variation caused by irradiating it with ultraviolet pulse laser beams having the same laser energy density as that at mounting in an aligner for semiconductor is very small and to provide a method for evaluating synthetic quartz glass for an optical use.
      SOLUTION: The ultraviolet pulse laser beams having oscillation wavelength of 150 nm or more and 220 nm or less are used for the synthetic quartz glass material for the optical use within a range of 0.01 mJ/cm
      2 or more and 0.3 mJ/cm
      2 or less as an energy density per 1 pulse. When continuous light irradiated from an ultraviolet lamp having a light-emitting range of 150-300 nm irradiates the quartz glass at the illuminance of 0.01 mW/cm
      2 or more and 100 mW/cm
      2 or less, the refractive index at the irradiated part with the light from the ultraviolet lamp is reduced. When the total irradiation energy per unit area at the irradiated part with light from the ultraviolet lamp is expressed as A kJ/cm
      2 and the refractive index variation at the irradiated part with light from the ultraviolet lamp is expressed as B, the range of the value B/A is denoted as -1×10
      -6 ≤B/A≤-1×10
      -7 .
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供一种用于光学用途的合成石英玻璃材料,其通过用与半导体对准器中安装相同的激光能量密度的紫外脉冲激光束照射其折射率变化非常小 并提供一种用于评估用于光学用途的合成石英玻璃的方法。 振荡波长为150nm以上且220nm以下的紫外脉冲激光用于光学用合成石英玻璃材料在0.01mJ / cm 2以下的范围内 > 0.3以上,0.3mJ / cm 2 / SP以下,作为1脉冲的能量密度。 当从具有150-300nm的发光范围的紫外灯照射的连续光以0.01mW / cm 2以上且100mW / cm 2的照度照射石英玻璃时 以下,来自紫外线灯的照射部分的折射率降低。 当将来自紫外线灯的照射部分的照射部分的每单位面积的总照射能量表示为A kJ / cm 2 ,并且表示来自紫外线灯的照射部分的折射率变化 作为B,值B / A的范围被表示为-1×10 -6 ≤B/A≤-1×10 -7 。 版权所有(C)2005,JPO&NCIPI