Process for preparing laser rod with undoped ends

Abstract

The present invention belongs to field of monocrystal growing technology. The technological process of preparing laser rod with undoped ends includes the following steps: conventional growth to produce laser rod; setting the laser rod from top into molten liquid medium the same as the laser matrix to smelt slightly the edge of the laser rod and to grow the undoped end in the required length in conventional monocrystal growing process; turning the laser rod and repeating the said conventional monocrystal growing process to obtain the monocrystal laser rod with undoped ends. The present invention solves the problem of laser rod ends incapable of being cooled, reaches the complete cooling of laser rod and raises the cooling effect. The laser rod of the present invention is superior to available adhered laser rod, and has improved laser beam quality, raised efficiency, prolonged service life of laser crystal, increased average output laser power and raised laser pulse repeating frequency.

Description

technical field [0001] The invention discloses a single crystal growth process of a laser rod with no doping at both ends, belonging to the technical field of single crystal growth, and relates to a preparation process of a laser rod with no doping at both ends. Background technique [0002] Laser rods, that is, laser crystals, are composed of laser substrates and active ions. After absorbing the energy of the pump light, the active ions jump to the excited state energy level, and the number of particles is reversed between the laser energy level and the ground state, and return to the ground state under the excitation of external light. , while emitting laser light in the same phase as the incident light. Therefore, the active ions in the laser rod are essential substances, and also the main reason for the heating of the crystal. With the development of laser technology, when using high power density and high pulse frequency, the problem of heat dissipation of laser rod be...

AI Technical Summary

Problems solved by technology

[0004] The bonding method has the following problems: the optical processing requirements of the crystal are extremely strict, and, although it is bonded under high temperature and pressure, it is difficult to eliminate the disordered state of the interface atomic arrangement at the crystal junction only by high temperature diffusion. Not to mention the existence of various dislocations, stress and other defects, making it difficult to fundamentally improve the beam quality

Long-term use of the bonded laser rod will cause deformation at the seam, which will not only affect the beam quality of the laser, but also cause separation and fall off in severe cases, reducing the service life