Abstract
A passively Q-switched (PQS) Tm:YAlO3 (Tm:YAP) laser was perfectly implemented with boron nitride (BN) nanosheets as a saturable absorber mirror. In PQS mode, an average output power of 1.54 W with a pulse duration of 349 ns was achieved, corresponding to an optical–optical conversion efficiency of 5.78%. Also, a pulse peak power of 14.6 W was acquired with an output wavelength of 1937.40 nm from the PQS Tm:YAP laser, and the beam quality factors were measured to be and at a physical cavity of 27 mm.
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