Multichannel broadband high-resolution spectrograph

A multichannel broadband high-resolution spectrograph, characterized by comprising a plurality of light source incident slits, a multichannel integrated grating, a multichannel shared two-dimensional focus imaging mirror and a two-dimensional area array detector which are sequentially disposed along a light source incident or reflection line, wherein the multichannel integrated grating consists of a plurality of sub-gratings;

• each light source incident slit is used as a spectrum channel incident port, the sub-gratings are combined to form an independent integrated grating according to the number of spectrum channels, a light source enters a collimating mirror through the slits, a direction perpendicular to an incident surface is a y direction, each sub-grating is disposed along the y direction, and each sub-grating has the same diffraction angle range along an x direction in which diffraction wavelengths are distributed in the incident surface;
• and
• incident light enters the corresponding integrated gratings along each light source incident slit and then is focused by the shared two-dimensional focus imaging mirror after diffraction of the integrated grating, and diffraction light in a full-spectrum region is incident onto a focal plane of the two-dimensional area array detector for detection.