High-efficiency holmium laser

Abstract

The invention discloses a high-efficiency holmium laser. The laser comprises a resonant cavity, a light condensation cavity, a laser crystal rod, and a pulse xenon lamp. The light condensation cavity comprises a ceramic reflector, a cerium-doped quartz socket tube, current guide baffle plates, crystal end heating sleeves, and a cavity structure. The cerium-doped quartz socket tube is embedded into the ceramic reflector, and the laser crystal rod passes through the cerium-doped quartz socket tube. Moreover, two ends of the laser crystal rod are supported by the cavity structure, thereby achieving the sealing of the interior and exterior of the cavity. The two crystal end heating sleeves respectively sleeve two ends of the laser crystal rod, and are fixed through the cavity structure. The pulse xenon lamp passes through the ceramic reflector, and two ends of the pulse xenon lamp are supported by the cavity structure, thereby achieving the sealing of the interior and exterior of the cavity. The current guide baffle plates with small holes are disposed at two ends of the ceramic reflector. The laser can achieve that laser crystal works under lower temperature, greatly improves the efficiency, prevents the moisture condensation on an end face of an optical device from causing sudden damage, and guarantees the long-time reliable operation.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to a high-efficiency holmium laser, in particular to a xenon lamp pumped high-efficiency Cr, Tm, Ho:YAG solid-state laser suitable for medical applications. Background technique [0002] Cr,Tm,Ho:YAG solid-state laser emits laser light with a wavelength of 2.1μm, which can be strongly absorbed by water, and has the advantages of small damage and high efficiency when applied to laser surgery. It has a very wide application in minimally invasive medical surgery. Cr, Tm, Ho: YAG lasers have a quasi-three-level structure, so the temperature of the crystal rod has a huge impact on the laser efficiency. As the crystal temperature increases, the laser efficiency decreases rapidly. Therefore, good cooling conditions are to ensure that the laser achieves high-efficiency laser important content of the output. However, when the laser crystal is cooled to a lower temperature (especially in the...

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Problems solved by technology

[0003] In summary, although the currently disclosed holmium lasers are designed in various forms such as dual-core and multi-core, the common deficiency is that the water vapor condensation problem on the end face of the laser crystal, the core component, cannot be prevented, so that the laser cannot work at a lower temperature. Under this condition, the laser efficiency is greatly limited, and the reliability of the laser is reduced

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