A tunable XUV monochromatic light source based on the time preserving grating selection of high-order harmonic generation

Niu Yong^{1, 2}, Liang Hongjing^{1, 2}, Liu Yi^{1, 2}, Liu Fangyuan^{1, 2}, Ma Ri^{1, 2, †}, Ding Dajun^{1, 2, ‡}

Calculated time broadening of the classical diffraction mount and conical diffraction mount for two types of grating groove densities, dashed lines for 300 gr/mm and solid lines for 600 gr/mm. In the calculations, the divergence angle is 10 mrad, the focal length is 500 mm, and the incident angle is .