Single axial mode oscillation at 1064 and 1342 nm in a Nd3+:YVO4 laser for stable intracavity generation of yellow laser light

Compact intracavity frequency converted lasers based on combining a Nd³⁺:YVO₄ laser crystal with an intracavity nonlinear crystal have been reported to generate yellow laser light at 593 nm by intracavity sum-frequency-mixing of two infrared fundamental laser waves at 1064 and 1342 nm. An attractive feature of intracavity converted lasers is the possibility of bonding or putting into contact the laser and the nonlinear crystals to achieve a compact device with coated dielectric mirrors similar to microchip lasers. The axial hole burning scheme should be preferred for intracavity conversion as it allows for simultaneous optimal focussing of both laser beams in the nonlinear crystal and leads to a more simple and compact device.