1.6: Laser Materials

Laser Material	Absorption Wavelength	Average Emission $\lambda$	Band Width	Pulse Width
Nd: YAG	808 nm	1064 nm	0.45 nm	~ 6 ps
Nd: YLF	797 nm	1047 nm	1.3 nm	~ 3 ps
Nd: LSB	808 nm	1062 nm	4 nm	~ 1.6 ps
Nd: YVO$_4$	808 nm	1064 nm	2 nm	~ 4.6 ps
Nd: fiber	804 nm	1053 nm	22-28 nm	~ 33 fs
Nd: glass	804 nm	1053 nm	22-28 nm	~ 60 fs
Yb: YAG	940, 968 nm	1030 nm	6 nm	~ 300 fs
Yb: glass	975 nm	1030 nm	30 nm	~ 90 fs
Ti: $\ce{Al2O3}$	480-540 nm	796 nm	200 nm	~ 5 fs
$\ce{Cr^{4+}: Mg2SiO4}$	900-1100 nm	1260 nm	200 nm	~ 14 fs
$\ce{Cr^{4+}}$: YAG	900-1100 nm	1430 nm	180 nm	~ 19 fs

Transition metals: ($\ce{Cr^{3+}, Ti^{3+}, Ni^{2+}, CO^{2+}}$, etc.) outer $3d$-electrons) $\to$ broadband

Rare earth: ($\ce{Nd^{3+}, Tm^{3+}, Ho^{3+}, Er^{3+}}$, etc.) (shielded $4f$-electrons) $\to$ narrow band.