Diode-pumped Dy3+, Tb3+:LuLiF4 continuous-wave and passively Q-switched yellow lasers

We report on the power-scaling continuous-wave (cw) Dy3+, Tb3+:LuLiF4 yellow laser, which comprises a single-emitter blue laser diode (LD) that functions as a pump source. The maximum output power of the laser is evaluated to be 220 mW at 574 nm. The passively Q-switched yellow laser is generated by using Cr4+:Y3Al5O12 (Cr:YAG) as the saturable absorber. The shortest pulse width (full width at half maximum) is less than 582 ns with a repetition rate of 5.8 kHz. Meanwhile, the pulse energy and peak power are similar to 4.5 mu.J and similar to 7.7 W, respectively. This work reveals that Dy3+, Tb3+:LuLiF4 crystal is a potential laser gain material that can be used to develop compact and efficient yellow lasers, which can not only be employed in cw lasers but also in passively Q-switched pulse lasers.

Automated summary

This study reports on the development of a continuous-wave yellow laser using Dy3+, Tb3+:LuLiF4 crystal, with a maximum output power of 220 mW. By using a single-emitter blue laser diode as the pump source, a passively Q-switched yellow laser is generated using Cr:YAG as the saturable absorber, achieving a pulse width of less than 582 ns, a repetition rate of 5.8 kHz, and a pulse energy and peak power of 4.5 μJ and 7.7 W, respectively.