Fig. 6: The laser spectra and CIE coordinates of the dual-mode laser.

The dual-mode output spectra of the GC microsphere with different femtosecond pulse pump wavelengths of a 1200 nm, b 1160 nm, c 1060 nm, d 1020 nm, e 980 nm, f 940 nm and g 900 nm. h Tunable CIE coordinates of the dual-mode microcavity output