High-efficiency all-solid-state thulium laser packaging module

A laser packaging, all-solid-state technology, applied in the direction of lasers, laser components, phonon exciters, etc., can solve the problems of reducing thermal lens effect, water vapor condensation on optical sections, reducing thermal stress of crystals, etc., to improve pumping energy Limiting, lowering temperature, reducing the effect of maximum stress

Active Publication Date: 2017-05-31
武汉镭健科技有限责任公司
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Problems solved by technology

The application of this laser module can facilitate the assembly of high-efficiency end-pumped Tm:YAG solid-state lasers, which can realize the operation of thulium lasers under low temperature conditions, and at the same time solve the problem of water vapor condensation on the optical section, and can also greatly reduce the thermal stress of the crystal and reduce the thermal lens to a certain extent effect, which is beneficial to improve the pumping limit of the laser and improve the beam quality, and significantly improve the pulse output energy and system performance of the thulium laser

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Embodiment Construction

[0017] Below in conjunction with accompanying drawing, the implementation of technical scheme is described in further detail:

[0018] like figure 1 As shown, the high-efficiency all-solid-state thulium laser packaging module of the present invention includes an auxiliary heat sink 1, two groups of TEC refrigeration modules 21 and 22, a cooling heat sink 3, two groups of heat insulating materials 41 and 42, and strip-shaped Tm:YAG crystal 5 . Laser crystal 5 adopts a strip-shaped Tm:YAG and YAG bonded crystal with a specification of 4×4×10mm, in which the non-doped parts of B and C at both ends are each 2.5mm long, and the doped part of A in the middle is 5mm long. The bonded crystal avoids The Tm:YAG laser has a higher concentration of lower energy level particles for the absorption of the oscillating laser due to the quasi-three-level operation, which improves the laser efficiency. The area around the crystal A is closely combined with the cooling heat sink through the indi...

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Abstract

The invention discloses a high-efficiency all-solid-state thulium laser packaging module. The high-efficiency all-solid-state thulium laser packaging module comprises cooling heat sinks, auxiliary heat sinks, strip-shaped Tm:YAG bonding crystals, TEC cooling modules, and thermal insulation materials. Based on the characteristics that a cooling surface absorbs heat while a heat dissipation surface discharges heat in working of each TEC cooling module, the cooling heat sinks and the auxiliary heat sinks are designed to realize low temperature cooling and end part auxiliary heating to gain regions of the Tm:YAG bonding crystals; simulation and analysis proves that an end-pumping solid-state laser adopting the laser modules not only can solve the problem of vapor condensation on an optical fracture surface in low-temperature working, but also can sharply lower thermal stress of crystals, so that pumping ultimate limit of the laser and light beam quality can be improved, and the output energy and output efficiency of the thulium laser pulse can be greatly improved.

Description

technical field [0001] The invention relates to a high-efficiency all-solid-state thulium laser packaging module, specifically a laser packaging module for improving the output efficiency and reliability of an all-solid-state Tm:YAG laser, and belongs to the technical field of laser devices. Background technique [0002] The thulium laser with a wavelength of 2 μm has good application prospects in the fields of lidar, distance measurement and medical treatment. The all-solid-state thulium laser can take advantage of the long laser upper energy level lifetime and realize large pulse energy output through modulation, which has obvious advantages in certain detection fields. The thulium laser operates in a quasi-three-level mode, and low-temperature cooling can greatly improve the laser efficiency. Therefore, good cooling conditions are a necessary condition for Tm:YAG lasers to achieve high-efficiency laser output. However, when the laser crystal is cooled to a lower tempera...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/042
CPCH01S3/0405H01S3/042
Inventor 姚育成罗才智刘丹琳黄楚云陈本源
Owner 武汉镭健科技有限责任公司
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