The 74181 Double Grating Assembly is designed for installation into the Oriel Cornerstone 260 monochromators and MS260i imaging spectrographs. This 50 x 50 mm grating comes bonded to a double grating mount, allowing it to be one of two gratings installed inside the instrument. The grating efficiency exceeds 20% over its entire operating range, with a peak efficiency of greater than 65% at its blaze wavelength.

This Grating Assembly may be installed in the field, after which the grating must be aligned and calibrated. However, it is suggested to return the instrument to Newport for grating installation and calibration. During recalibration, the instrument is thoroughly assessed to ensure optimal performance and routine maintenance services are performed. The monochromator is returned with a Certificate of Calibration, guaranteeing the instrument meets or exceeds it specifications.

• 主要波长范围

  260 to 550 nm

• 最高效率波长

  413 nm

• 镀膜类型

  AlMgF2 broadband reflective

• 每毫米刻线数

  121.6  

• 类型

  Ruled

• 峰值效率

  0.67

• 倒数色散率

  31.3 nm/mm  

• 闪耀波长

  410 nm

• 多通道阵列带通

  798 nm  

74181双光栅组件设计用于安装到Oriel基石260单色仪和MS260i成像光谱仪。这个50x50mm的光栅连接到一个双光栅安装，使它成为安装在仪器内部的两个光栅之一。光栅效率在整个工作范围内超过20%，在其火焰波长时，峰值效率超过65%。

这种光栅组件可以安装在现场，之后必须对光栅进行校准和校准。但建议将仪器送回新港进行光栅安装和校准。在重新校准期间，对仪器进行彻底的评估，以确保最佳的性能和日常维护服务。单色仪返回时附有校准证书，保证仪器符合或超过其规格。