We made numerical simulations of the generation of narrowband beams of extreme ultraviolet radiation from intense laser interaction with a blazed grating surface. Strong fifth harmonic emission into its blazed diffraction order was observed as well as heavy suppression of the fundamental frequency with comparison to a typical harmonic spectrum from a flat target. The results demonstrate a new highly efficient method of generating near-monochromatic harmonics from the fundamental with minimal effect on the pulse duration.
© 2011 Optical Society of America
Original Manuscript: March 10, 2011
Revised Manuscript: May 19, 2011
Manuscript Accepted: May 21, 2011
Published: June 15, 2011
M. Yeung, M. Zepf, M. Geissler, and B. Dromey, "Angularly separated harmonic generation from intense laser interaction with blazed diffraction gratings," Opt. Lett. 36, 2333-2335 (2011)