End face uniform pumping type solid laser device

Abstract

The invention discloses an end face uniform pumping type solid laser device. First pumping light is emitted through a first laser pumping source assembly; after the first pumping light penetrates through a heat compensation negative lens and a second pumping source reflecting mirror in sequence, the first pumping light is emitted and focused to a first focusing point in a laser crystal; a second laser pumping source assembly emits second pumping light; after the second pumping light is reflected through the second pumping source reflecting mirror, the second pumping light is emitted and focused to a second focusing point in the laser crystal; a third laser pumping source assembly emits third pumping light; after the third pumping light is reflected through a third pumping source reflectingmirror, the third pumping light is emitted and focused to a third focusing point in the laser crystal; a fourth laser pumping source assembly emits fourth pumping light; after the fourth pumping light is reflected through a fourth pumping source reflecting mirror and emitted through the third pumping source reflecting mirror in sequence, the fourth pumping light is emitted and focused to a fourthfocusing point in the laser crystal. By adopting the end face uniform pumping type solid laser device, the output power of the laser device is improved and the pulse width of laser is reduced while the volume of the solid laser device is reduced.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to an end face uniformly pumped solid-state laser. Background technique [0002] Semiconductor end-pumped solid-state lasers have simple structure, small size, good beam quality, stable operation, and easy integration, so they are widely used in laser marking, laser scribing, precision resistance adjustment, laser cleaning, and laser engraving and other laser processing industries . [0003] With the increasing requirements for laser processing effect and processing efficiency in industrial applications, the market has also put forward more requirements for lasers. Reducing the volume of solid-state lasers, reducing the output laser pulse width, and adopting air-cooled cooling methods are common applications. Require. To reduce the volume of solid-state lasers, the cavity length of the laser resonator must first be shortened. Under the same conditions, the shorter the cavity length...

AI Technical Summary

Problems solved by technology

On the contrary, the surface area of ​​the laser crystal is very small, so the heat inside the laser crystal cannot be effectively dissipated through heat conduction, and the heat inside the laser crystal gradually accumulates, causing the laser crystal to burst and the laser to be damaged

Images