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Holmium laser

A holmium laser and holmium laser technology, applied in the laser field, can solve the problems of poor laser beam quality, increase system complexity and implementation difficulty, and achieve the effects of compact structure, convenient implementation and high energy conversion efficiency

Active Publication Date: 2018-07-20
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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Problems solved by technology

However, due to severe thermal lensing in each gain medium, the laser beam quality at high output power (>5W) is poor (M 2 >2)
This implementation method needs to place the Tm-doped and Ho-doped gain media in cooling copper blocks for cooling and temperature control, and requires the two gain media to be strictly aligned to achieve intracavity resonance, which increases the complexity of the system and implementation. difficulty

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Embodiment Construction

[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings. However, those skilled in the art know that the present invention is not limited to the accompanying drawings and the following embodiments, and the relevant drawings as schematic diagrams should not be considered as strictly reflecting the proportional relationship of geometric dimensions, nor should they be used as limiting the scope of application of the present invention.

[0033] A holmium laser provided by the invention, such as Figure 1a As shown, it includes: a pump module, a gain medium module 5 and a laser resonator module. Among them, the pump module includes an 800nm ​​semiconductor laser 1, a multimode fiber 2 and a collimator focusing module 3; the laser resonator module includes a front cavity mirror 4 and a ...

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Abstract

The invention relates to a holmium laser, and the holmium laser comprises a pump module, a gain medium module, and a laser cavity module. The pump module includes a semiconductor laser, a multimode fiber, and a collimating focusing module. The laser cavity module includes a front cavity mirror and a rear cavity mirror, and the rear cavity mirror serves as a coupling output mirror. The gain mediummodule is located between the front cavity mirror and the rear cavity mirror. The semiconductor pumping light emitted by the semiconductor laser is outputted to the collimating focusing module after passing through the multimode fiber, and the light outputted by the collimating focusing module is emitted to the gain medium module through the front cavity mirror to generate holmium laser, and thenis outputted through the rear cavity mirror. The holmium laser proposed by the invention is higher in overall conversion efficiency of energy, is more compact in structure, is lower in construction cost, and is more convenient in implementation.

Description

technical field [0001] The invention belongs to the technical field of lasers, and in particular relates to a holmium laser. Background technique [0002] The laser wavelength (2.05-2.2 μm) of the eye-safe rare earth holmium (Ho) ion-doped solid-state laser is located in the atmospheric window and molecular fingerprint band, which can be detected by a large number of molecules (H 2 O, N 2 O and CO 2 ) resonance absorption, which has a wide range of application value and prospects in the fields of national defense security, environmental monitoring, and biomedicine. At the same time, the laser wavelength longer than 2.1 μm is far away from the cut-off absorption edge near 2 μm of the nonlinear optical crystal zinc-phosphorus-germanium (ZGP) and OP:GaAs, which is conducive to the realization of high-energy / power mid-infrared 3-5 μm laser output. Compared with holmium fiber lasers, all-solid-state holmium lasers avoid serious nonlinear effects in fiber media, and can achieve...

Claims

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Application Information

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IPC IPC(8): H01S3/0941H01S3/16
CPCH01S3/0941H01S3/161
Inventor 黄海洲林文雄黄见洪翁文李锦辉郑晖陈金明戴殊韬
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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