60.4 W continuous-wave single-frequency laser output from a two-stage Nd:YAG single-crystal fiber amplifier.

A Nd:YAG single-crystal fiber amplifier for the amplification of continuous-wave single-frequency laser end-pumped by a laser diode (LD) is investigated. With a two-stage amplification configuration, an output power of 60.4 W under the total incident pump power of 200 W is achieved, which is, to our knowledge, the highest power from a continuous-wave single-frequency laser achieved with a single-crystal fiber scheme.

Watt-level passively mode-locked Tm:YLF laser at 1.83 µm.

Passive, continuous-wave mode-locked (CWML) operation of a 1.83 µm Tm:YLF laser is experimentally demonstrated for the first time, to the best of our knowledge. Two specially selected output couplers are used to realize this operation.

High-power and high-efficiency short wavelength operation of a Tm:YLF laser at 1.83 μm.

A high-power and high-efficiency diode-end-pumped Tm:YLF laser at 1.83 μm is demonstrated for the first time, to our best knowledge. To make the laser operate at 1.