Side-pumped laser module capable of protecting light-emitting cavity surface of laser diodes against pollution

Abstract

The invention discloses a side-pumped laser module capable of protecting the light-emitting cavity surfaces of laser diodes against pollution. The side-pumped laser module comprises a laser crystal bar, a quartz glass tube, a light-gathering cavity, a laser diode array, a first radiator, a second radiator, a third radiator, a terminal and an outer sealer; an inner sealing cavity is formed between the first radiator, the second radiator, the third radiator, the light-gathering cavity and the terminal and used for protecting the light-emitting cavity surfaces of the laser diodes against pollution caused by volatile substances generated due to the temperature rising of internal elements of the side-pumped laser module in the long-term operation process; an outer sealing cavity is formed between the outer sealer, the terminal and the side-pumped laser module; the inner sealing cavity and the outer sealing cavity both are capable of preventing outside substances from polluting the light-emitting cavity surfaces of the laser diodes. The module is used for solving the problem of pollution on the light-emitting cavity surfaces of laser diodes in the side-pumped laser module; as a result, the reliability of full-solid state side-pumped laser devices high in power, capable of running for a long time and low in absorption is improved.

Description

technical field [0001] The invention relates to the technical field of all-solid-state side-pumped lasers, in particular to a side-pumped laser module for preventing laser diode light-emitting cavity surface pollution. Background technique [0002] All-solid-state side-pumped lasers have important applications in the field of lasers due to their advantages of high pump light input power, uniform absorption, and compact structure. The side-pumped laser module is the core component of the all-solid-state side-pumped laser, and the reliability of this component directly determines the reliability of the laser. [0003] Experimental research has found that all solid-state side-pumped lasers, when operating at high power and for a long time, the laser power decreases and the life becomes shorter, especially for low-absorption lasers (that is, the pump light is less absorbed by the laser crystal rod at a time), this phenomenon is more serious. serious. After in-depth experimenta...

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Problems solved by technology

[0004] Aiming at the defects in the prior art, the present invention provides a side-pumped laser module that prevents the surface pollution of the laser diode light-emitting cavity. pollution problem

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