Grazing incidence spectrograph-monochromator with a focusing toroidal mirror

Area of Science:

• Physics
• Spectroscopy
• Optics

Background:

• Grazing incidence spectrographs are crucial for extreme ultraviolet (XUV) spectroscopy.
• Achieving both spectral and spatial resolution in XUV spectroscopy presents significant challenges.

Purpose of the Study:

• To develop an advanced spectroscopic system for the extreme ultraviolet (XUV) region.
• To enhance spectral and spatial resolution and overall efficiency for XUV spectroscopy.
• To enable spectroscopy with spatial resolution, particularly for plasma diagnostics.

Main Methods:

• Integration of a toroidal mirror with a grazing incidence spherical grating spectrograph.
• Optimization of the system for spectral and spatial resolution and efficiency.
• Utilization of a turret with three toroidal mirrors and a new grazing incidence spectrometer model to cover the entire XUV region.

Main Results:

• The system achieves one-dimensional stigmatism in the XUV region.
• The setup allows for spectroscopy with spatial resolution.
• The system is capable of covering the entire XUV spectral range.

Conclusions:

• The toroidal mirror system offers a significant advancement for XUV spectroscopy.
• The developed system is suitable for diagnostic studies of laser-produced pellets and observations of large plasma machines.
• Internal adjustments without source manipulation enhance the system's practicality.