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We demonstrated the dual-wavelength simultaneously Q-switched Nd: Lu2O3 laser with a topological insulator Bi2Se3 as the Q-switcher. The continuous-wave Nd:Lu2O3 crystal laser with the slope efficiency of 31% was achieved, and the first Nd:Lu2O3 pulsed laser operation was reported, as far as we know. By using the wavelength-insensitive saturable absorption of topological insulators, the dual wavelength of the Nd:Lu2O3 crystal laser can be Q-switched simultaneously without the frequency selection of the saturable absorber, since the emission cross-sections of Nd:Lu2O3 at the wavelengths of 1077 and 1081 nm are comparable. The results indicate that the topological insulator is wavelength-insensitive and should be suitable for the dual-wavelength simultaneously Q-switched laser as a passive Q-switcher. It can be proposed that this work would provide an efficient technology for the dual-wavelength simultaneously Q-switched laser, which has promising applications in many regimes.

ieee photonics journal

Topological Insulator Simultaneously Q-Switched Dual-Wavelength <formula formulatype="inline"><tex Notation="TeX">$ \hbox{Nd}:\hbox{Lu}_{2}\hbox{O}_{3}$</tex></formula> Laser

Topological Insulator Simultaneously Q-Switched Dual-Wavelength $ \hbox{Nd}:\hbox{Lu}_{2}\hbox{O}_{3}$ Laser