作者: Yahiko Yamada , Akiyoshi Mitsuishi , Hiroshi Yoshinaga
关键词:
摘要: Transmission filters in the far-infrared region from 25 to 300 μ which cut off short-wave radiation are obtained polyethylene sheet containing powders of reststrahlen crystals. The cut-off wavelength these can be shifted with choice restrahlen By using finer powder size and/or thinner sheet, steepness transmittance curve increased. These very economical and convenient use spectrometers.