A diode pumped tunable single-frequency Tm:YAG laser using twisted-mode technique

A diode pumped tunable single-frequency Tm:YAG laser using the twisted-mode cavity is reported. The maximum single-frequency output power is 514 mW with a slope efficiency of 9.7%. The wavelength tuning range from 2011.587 nm to 2016.065 nm is achieved by tuning the obliquity of a 1-mm-thick etalon. The single frequency laser has a beam quality of M2 < 1.3 at the maximum single-frequency output power.

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