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Dysprosium-activated crystal material capable of achieving yellow laser output

A crystalline material and single crystal technology, applied in the field of inorganic crystalline materials, can solve problems such as complex systems, and achieve the effects of high thermal conductivity, high mechanical strength, and high laser damage threshold

Inactive Publication Date: 2018-12-04
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The phase control of the yellow laser with this structure requires high precision and the system is relatively complicated

Method used

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  • Dysprosium-activated crystal material capable of achieving yellow laser output
  • Dysprosium-activated crystal material capable of achieving yellow laser output
  • Dysprosium-activated crystal material capable of achieving yellow laser output

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The preparation of embodiment 1 crystal material sample

[0049] Weigh CaCO according to the ratio in the following chemical reaction formula 3 , La 2 o 3 , Ga 2 o 3 and Dy 2 o 3 , mix well to get the raw material:

[0050] 2CaCO 3 +(1-x)La 2 o 3 +3Ga 2 o 3 +xDy 2 o 3 →2CaGy y La (1-x) Ga 3 o 7 +2CO 2 ↑

[0051] Press the raw material into a sheet, put it into a corundum crucible, put it into a high-temperature sintering furnace, slowly raise the temperature to 1000-1100 at a certain rate, and keep it for a period of time; then raise the temperature to the sintering temperature and sinter at a constant temperature for a period of time, take out the sample; repeat the above sintering step until X-ray powder diffraction with CaLaGa 3 o 7 Until the XRD standard JCPDS card of the crystal completely matches, a polycrystalline sample of the crystal material is obtained.

[0052] Put the raw materials into the iridium crucible of Ф53mm×30mm. In order to a...

Embodiment 2

[0056] The optical property measurement of embodiment 2 gained sample

[0057] Take sample S1 separately # ~S3 # , the processed size is 3.0×5.0×1.0mm 3 The crystal slices were tested for spectral properties.

[0058] The results showed that sample S1 # ~S3 # The absorption spectrum of Dy shows 3+ The characteristic absorption peaks of , where the peak wavelengths are 453, 756, 799, 894, 1075, 1257 and 1662nm, respectively, corresponding to Dy: 6 h 15 / 2 arrive 4 I 15 / 2 , 6 f 3 / 2 , 6 f 5 / 2 , 6 f 7 / 2 , 6 f 9 / 2 + 6 h 7 / 2 , 6 f 11 / 2 + 6 h 9 / 2 with 6 h 11 / 2 transition, wherein the absorption peak is located in the 435-463nm band, and the peak wavelength is 453nm. This absorption band matches the commercial blue light semiconductor pump source, making Dy:CaLaGa 3 o 7 The crystal is well suited for laser experiments with commercial blue diode pumping.

[0059] The room temperature fluorescence spectrum under pumping at 453nm shows that sample S1 # ~S3 # T...

Embodiment 3

[0062] The application of embodiment 3 gained sample in laser device

[0063] Take sample S1 separately # ~S3 # , the processed size is 2mm×2mm×(5~10)mm, the two ends of the crystal are 2mm×2mm polished, and it is applied to the laser device. The device diagram of the laser device is shown in image 3 As shown, the crystal sample is put into a water-sealed copper tube, the pump source used is 453nm blue light LD, and the end-pump mode is adopted. The input mirror is a concave mirror with a diameter of 200mm, which is highly transparent at 453nm and highly reflective at 574nm. The coupling mirrors are plane mirrors with transmittances of 1%, 2% and 3% at the laser wavelength. The laser spectrum is measured by a laser wavelength meter, the model is 821B-IR, Bristol, and the laser power is measured by a power meter, the model is LPE-1B.

[0064] The results showed that the samples S1 were applied respectively # ~S3 # All laser devices can achieve 574nm yellow laser output. ...

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Abstract

The invention discloses a Dy<3+>-doped crystal material which directly achieves yellow laser output and has the chemical formula of CaDyxLa<1-x>Ga3O7, 0.01 <= x <= 0.05. The grown and obtained Dy<3+>-activated CaLaGa3O7 crystal is directly pumped by means of blue semiconductor laser. The product achieves all solid-state yellow laser output in the waveband of 570-597 nm.

Description

technical field [0001] The application relates to a novel yellow laser crystal material, its preparation method and application, and belongs to the field of inorganic crystal materials. Background technique [0002] Compared with lasers of other wavelengths, lasers in the yellow band have the following advantages: strong penetrability in liquid and nuclear hardening crystals, low absorption rate of yellow light by lutein in the pigment interference layer and macula, heat energy in the retina There is less conduction in the nerve receptors, less discomfort for patients, and higher safety and reliability, so the yellow laser has an irreplaceable role. [0003] Due to the above advantages, yellow laser has very important application prospects in the fields of biomedicine, space target detection and recognition, atom cooling and capture, lidar, laser display and biomedical instruments. In recent years, LD-pumped all-solid-state yellow lasers have developed rapidly, and all-soli...

Claims

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Application Information

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IPC IPC(8): C30B29/22C30B15/00G02F1/355
CPCC30B15/00C30B29/22G02F1/3551
Inventor 刘云云王燕李坚富朱昭捷游振宇涂朝阳
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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