https://doi.org/10.1351/goldbook.S05736
CW or pulsed lasers in which the @A00106@ is a solid matrix (crystal or glass) doped with an ion (e.g. Nd3+, Cr3+, Er3+). The emitted @W06659@ depends on the active ion, the selected optical transition, and the matrix. Some of these lasers are tunable within a very broad range (e.g. from \(700\) to \(1000\ \text{nm}\) for Ti3+ doped sapphire). Pulsed lasers may be free-running, Q-switched, or @M03958@-locked. Some CW lasers may be @M03958@-locked.