摘要:
A process for producing a synthetic silica glass optical component which contains at least 1×1017 molecules/cm3 and has an OH concentration of at most 200 ppm and substantially no reduction type defects, by treating a synthetic silica glass having a hydrogen molecule content of less than 1×1017 molecules/cm3 at a temperature of from 300 to 600° C. in a hydrogen gas-containing atmosphere at a pressure of from 2 to 30 atms.
摘要翻译:一种合成石英玻璃光学部件的制造方法,其通过处理氢分子含量少的合成二氧化硅玻璃,其含有至少1×10 17分子/ cm 3,OH浓度为200ppm以下,基本上无还原型缺陷 在含有氢气的气氛中,在2-30atms的压力下,在300-600℃的温度下,比1×1017分子/ cm 3。
摘要:
The present invention is to provide a TiO2—SiO2 glass having suitable thermal expansion properties as an optical member of an exposure tool for EUVL. The present invention relates to a TiO2-containing silica glass having a temperature, at which a coefficient of thermal expansion is 0 ppb/° C., falling within the range of 23±4° C. and a temperature width, in which a coefficient of thermal expansion is 0±5 ppb/° C., of 5° C. or more.
摘要:
To reduce the change in the refractive index of an irradiated portion of synthetic quartz glass, caused by the irradiation with a high energy light emitted from a light source such as a KrF excimer laser or an ArF excimer laser. A process for producing an optical member made of synthetic quartz glass, wherein the OH group concentration of the optical member is set depending upon the energy density of the laser beam employed, to adjust the ratio R (KJ/cm.sup.2-ppb).sup.-1 of the change in the refractive index of the optical member to the cumulative irradiation energy (KJ/cm.sup.2) by the laser, to be 0.Itoreq.R.Itoreq.0.2, thereby to control the change in the refractive index of the optical member made of synthetic quartz glass by the irradiation with a laser beam to be within a predetermined range.
摘要翻译:为了减少由诸如KrF准分子激光器或ArF准分子激光器的光源发射的高能量光的照射引起的合成石英玻璃的照射部分的折射率的变化。 一种制造由合成石英玻璃制成的光学构件的方法,其中根据所使用的激光束的能量密度设置光学构件的OH基浓度,以调节比率R(KJ / cm 2 -Pbb )为1,光学部件的折射率与激光的累积照射能量(KJ / cm 2)的变化为0.Itoreq.R.Itore.0.0,由此控制 通过用激光束照射由合成石英玻璃制成的光学构件的折射率的变化在预定范围内。
摘要:
An object of the present invention is to provide an artificial quartz member inhibited from suffering the decrease in transmittance in a laser light wavelength region which is caused by long-term irradiation with a laser light having a wavelength of 200 nm or shorter; and a process for producing the artificial quartz member. The invention provides an artificial quartz member for use as an optical element to be irradiated with a laser light having a wavelength of 200 nm or shorter, having an aluminum content of 200 ppb or lower.
摘要:
It is to provide a photomask substrate which has a low birefringence and with which polarized illumination can be employed or immersion exposure can be carried out.A photomask substrate made of a synthetic quartz glass to be used for production of a semiconductor employing a light source having an exposure wavelength of at most about 200 nm, which has a birefringence of at most 1 nm/6.35 mm at the exposure wavelength, and of which the amount of decrease in light transmittance is at most 1.0% as a difference in light transmittance at a wavelength of 217 nm, between before and after irradiation with Xe excimer lamp with an illuminance of 13.2 mW/cm2 for 20 minutes.
摘要翻译:提供一种具有低双折射率的光掩模衬底,并且可以采用偏振照明或可以进行浸没曝光。 一种由合成石英玻璃制成的光掩模基板,用于生产在曝光波长处具有至多1nm / 6.35mm的双折射的具有至多约200nm的曝光波长的光源的半导体,以及 在照射为13.2mW / cm 2的Xe准分子灯照射20分钟之前和之后,在217nm波长下的透光率差为1.0%以下。
摘要:
To reduce the change in the refractive index of an irradiated portion of synthetic quartz glass, caused by the irradiation with a high energy light emitted from a light source such as a KrF excimer laser or an ArF excimer laser. A process for producing an optical member made of synthetic quartz glass, wherein the OH group concentration of the optical member is set depending upon the energy density of the laser beam employed, to adjust the ratio R (KJ/cm2-ppb)−1 of the change in the refractive index of the optical member to the cumulative irradiation energy (KJ/cm2) by the laser, to be 0≦R≦0.2, thereby to control the change in the refractive index of the optical member made of synthetic quartz glass by the irradiation with a laser beam to be within a predetermined range.
摘要翻译:为了减少由诸如KrF准分子激光器或ArF准分子激光器的光源发射的高能量光的照射引起的合成石英玻璃的照射部分的折射率的变化。 一种制造由合成石英玻璃制成的光学构件的方法,其中根据所用激光束的能量密度设置光学构件的OH基浓度,以调节比例R(KJ / cm 2)/ 光学构件的折射率与激光的累积照射能量(KJ / cm 2)之间的变化的值为0以上的SUP〜-ppb)为0 <= R <= 0.2,从而通过激光束的照射来控制由合成石英玻璃制成的光学构件的折射率的变化,使其在预定范围内。
摘要:
It is to provide a photomask substrate which has a low birefringence and with which polarized illumination can be employed or immersion exposure can be carried out. A photomask substrate made of a synthetic quartz glass to be used for production of a semiconductor employing a light source having an exposure wavelength of at most about 200 nm, which has a birefringence of at most 1 nm/6.35 mm at the exposure wavelength, and of which the amount of decrease in light transmittance is at most 1.0% as a difference in light transmittance at a wavelength of 217 nm, between before and after irradiation with Xe excimer lamp with an illuminance of 13.2 mW/cm2 for 20 minutes.
摘要翻译:提供一种具有低双折射率的光掩模衬底,并且可以采用偏振照明或可以进行浸没曝光。 一种由合成石英玻璃制成的光掩模基板,用于生产在曝光波长处具有至多1nm / 6.35mm的双折射的具有至多约200nm的曝光波长的光源的半导体,以及 在照射为13.2mW / cm 2的Xe准分子灯照射前后,透光率的降低量为217nm波长下的透光率差为1.0%以下, SUP> 20分钟。
摘要:
A synthetic quartz glass for optical use, to be used by irradiation with light within a range of from the ultraviolet region to the vacuum ultraviolet region, which contains fluorine, which has a ratio of the scattering peak intensity of 2250 cm−1 (I2250) to the scattering peak intensity of 800 cm−1 (I800), i.e. I2250/I800, of at most 1×10−4 in the laser Raman spectrum, and which has an absorption coefficient of light of 245 nm of at most 2×10−3 cm−1.
摘要:
A process for producing a synthetic quartz glass for an optical member, which comprises a step of irradiating a synthetic quartz glass having an OH group content of 50 ppm or lower with vacuum ultraviolet light having a wavelength of 180 nm or shorter to improve the transmittance in a region of wavelengths of not longer than 165 nm.
摘要:
A synthetic quartz glass for optical use, to be used by irradiation with light within a range of from the ultraviolet region to the vacuum ultraviolet region, which contains fluorine, which has a ratio of the scattering peak intensity of 2250 cm−1 (I2250) to the scattering peak intensity of 800 cm−1 (I800), i.e. I2250/I800, of at most 1×10−4 in the laser Raman spectrum, and which has an absorption coefficient of light of 245 nm of at most 2×10−3 cm−1.