Abstract
Diode-pumped continuous-wave Nd:LuAG ceramic lasers at the 1.4-μm eye-safe spectral region are reported. A simultaneous dual-wavelength laser at 1418 nm and 1442 nm is achieved with a maximum output power of 1.37 W and a slope efficiency of 13.5% using a plane-concave cavity configuration. Laser generation at another emission line of 1432 nm is also realized with a maximum output power of 0.82 W with the help of an intracavity etalon. To improve the laser beam quality, a parallel plane laser cavity operating still at 1418 nm and 1442 nm is adopted in free-running mode.
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