Longitudinally diode-pumped quasi-continuous Yb3+, Er3+:LSB laser

A quasi-continuous output power of 1.1 W is generated at 1.56 μm in a longitudinally pumped Yb3+, Er3+:LaSc3(BO3)4 (Yb,Er:LSB) crystal. The lasing efficiencies of the Yb, Er:LSB laser and Er:phosphate glass laser are compared under the same pump conditions.