Multi-wavelength mid-infrared laser pulse train cavity dumped laser based on Nd:MgO:APLN crystal

A multi-wavelength mid-infrared laser pulse train cavity dumped laser based on ND:MGO:APLN crystal, comprising a first pump module, a first coupling lens group, a second pump module, a second coupling lens group, a first cavity mirror, a second cavity mirror, Nd:MgO:APLN crystal, a plane lens, a third cavity mirror, a output mirror, a first lens, MgO:PPLN crystal, a fourth cavity mirror, a second lens, a fifth cavity mirror, a Q switch, a sixth cavity mirror, wherein:

• the first cavity mirror, the second cavity mirror, the third cavity mirror and the fourth cavity mirror form a splayed parametric light oscillation cavity;
• the Nd:MgO:APLN crystal is placed between the first cavity mirror and the second cavity mirror;
• the plane lens is placed between the second cavity mirror and the third cavity mirror;
• the first lens and the MgO:PPLN crystal are sequentially placed between the third cavity mirror and the fourth cavity mirror;
• the second lens and the fifth cavity mirror are sequentially arranged on an extension line formed by the first cavity mirror and the fourth cavity mirror;
• the Q switch and the sixth cavity mirror are sequentially arranged on the same side of the fifth cavity mirror;
• the first cavity mirror, the second cavity mirror, the fourth cavity mirror, the fifth cavity mirror, the sixth cavity mirror and the plane lens form a fundamental frequency light resonant cavity;
• the first coupling lens group and the first pump module are sequentially arranged outside the first cavity mirror, and the second coupling lens group and the second pump module are sequentially arranged outside the second cavity mirror;
• the output mirror is arranged aside below the first lens to emit the generated multi-wavelength mid-infrared laser out of the resonant cavity.