Ho3 with various concentrations and Tm3 with molar concentration of 1.28% are co-doped in LiYF4(YLF) single crystals. The luminescent properties of the crystals are investigated through emission spectra, emission cross sec
This study shows that the principle of a recently proposed common-path laser interferometer containing a planar grating is nonexistent and apparently caused by a mathematical derivation error. Both p- and s-polarized beams in the proposed setup experience