Abstract
A dual-loss-modulated Q-switched laser at 1.06 µm is investigated. Bi2Se3 and Cr4+:YAG saturable absorber were simultaneously inserted into a laser cavity and used to study output characteristics of Q-switched laser at 1.06 µm. The obtained shortest pulse width, repetition rate and maximum single pulse energy were 240 ns, 140 kHz, and 2.57 μJ, respectively. Compared with those obtained in Q-switched laser with single Bi2Se3 SA, the pulse width is compressed by 70% and peak power increases 3.3 times. The results show that Bi2Se3 is a promising material for all-solid-state Q-switched laser and dual-loss-modulated technique is an effective method to optimize the output characteristics of Q-switched laser with two-dimensional materials.
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