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Yb and Pr co-doped lead fluoride blue, green and near-infrared laser crystal and preparation method and application thereof

A technology of laser crystal and lead fluoride, which is applied in chemical instruments and methods, lasers, crystal growth, etc., can solve the problems of impracticality, lack of pump source, and laser output, etc., and achieve the effect of high blue light output power

Active Publication Date: 2021-10-15
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In summary, only LiYF has obtained blue light laser output 4 Crystal, BaY 2 f 8 There are three materials of crystal and ZBLAN optical fiber, the highest output is only 201mW, and the highest slope efficiency is 29%, which cannot be practical
1 D. 2 The energy level has not had laser output due to the lack of a suitable pump source

Method used

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  • Yb and Pr co-doped lead fluoride blue, green and near-infrared laser crystal and preparation method and application thereof
  • Yb and Pr co-doped lead fluoride blue, green and near-infrared laser crystal and preparation method and application thereof
  • Yb and Pr co-doped lead fluoride blue, green and near-infrared laser crystal and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Growth of Pr by temperature gradient method 0.002 Yb 0.018 Pb 0.98 f 2 , specifically prepared by the following method:

[0038] Growth of Pr by temperature gradient method 0.002 Yb 0.018 Pb 0.98 f 2 Crystal, put 50g of raw material in a graphite crucible, vacuumize the furnace, fill in high-purity argon as a protective atmosphere, heat up to 840°C at a rate of 260°C / h, and keep the temperature for 10 hours until the raw material is completely melted and fully removed. , and then slowly cool down the melt at a rate of 1.5°C / h to grow. After the growth, the temperature was lowered to room temperature at 50°C / h, and then the crystal was taken out. Obtain a piece of Pr with good optical quality 0.002 Yb 0.018 Pb 0.98 f 2 crystals. It can be seen in the emission spectrum of the visible band that compared with the single-doped sample, the blue and green light have stronger emission, and the red light emission is significantly weakened, which can make the laser o...

Embodiment 2

[0044] Growth of Pr by temperature gradient method 0.003 Yb 0.025 Pb 0.972 f 2 , specifically prepared by the following method:

[0045] Growth of Pr by temperature gradient method 0.003 Yb 0.025 Pb 0.972 f 2 For crystal, put 50g of raw material in a graphite crucible, vacuumize the furnace, fill it with high-purity argon as a protective atmosphere, heat up to 840°C at a rate of 260°C / h, and keep the temperature constant for 10 hours until the raw material is completely melted and impurities are fully removed. Then, the temperature in the melt was lowered slowly at a rate of 1.5° C. / h to grow. After the growth, the temperature was lowered to room temperature at 50°C / h, and then the crystal was taken out. Obtain a piece of Pr with good optical quality 0.003 Yb 0.025 Pb 0.972 f 2 crystals. It can be seen in the emission spectrum of the visible band that compared with the single-doped sample, the blue and green light have stronger emission, and the red light emission...

Embodiment 3

[0047] Growth of Pr by temperature gradient method 0.001 Yb 0.01 Pb 0.989 f 2 Crystal, starting from PrF of 5N purity 3 ,YbF 3 and PbF 2 Single crystal grain or powder. After selecting a specific concentration of Pr ions and Yb ions doped to replace Pb ions, according to the chemical formula Pr 0.001 Yb 0.01 Pb 0.989 f 2 Calculate the mass required for each raw material and weigh it accurately, put the weighed raw material into a porous graphite crucible and cover it with a 2mm round graphite cover, vacuumize the furnace, and fill it with high-purity argon as a protective atmosphere The temperature was raised to 840°C at a rate of 260°C / h, and the temperature was kept constant for 10 hours until the raw material was completely melted and impurities were fully removed, and then the temperature in the melt was slowly cooled at a rate of 1.5°C / h to grow. After the growth, the temperature was lowered to room temperature at 50°C / h, and then the crystal was taken out.

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Abstract

The invention relates to a Yb and Pr co-doped lead fluoride blue, green and near-infrared laser crystal and a preparation method and application thereof. The chemical formula of the crystal is YbxPryPb1-x-yF2, the value range of x is 0.01-0.04, the value range of y is 0.001-0.005, the space group of the crystal is Fm-3m (225), the crystal belongs to a cubic system, and in the doping concentration range, and the unit cell parameter range is described in the specification. Compared with the prior art, the crystal material can realize high-efficiency visible band blue light, green light and near-infrared 1.3 [mu] m laser output, and has irreplaceable effects in the fields of laser biomedicine, color display, high-density storage, underwater imaging, optical communication and the like.

Description

technical field [0001] The present invention relates to the technical field of laser materials, and relates to a blue, green and near-infrared 1.3 μm laser crystal in the visible band and a preparation method thereof, in particular to a Yb, Pr co-doped lead fluoride blue, green and near-infrared laser crystal And its preparation method and application. Background technique [0002] As one of the three primary colors red, green and blue (RGB), the all-solid-state blue (407-505nm) laser plays an irreplaceable role in the fields of laser biomedicine, color display, high-density storage, underwater imaging, optical communication, etc. The development of a gain medium that can obtain laser light in this band has particularly important research significance and application value. In 2014, the Nobel Prize in Physics was awarded to three scientists from Japan for their major discoveries in blue light-emitting diodes. Subsequently, the active ion-doped gain medium directly pumped b...

Claims

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Application Information

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IPC IPC(8): C30B11/00C30B29/12H01S3/16
CPCC30B29/12C30B11/00H01S3/1645
Inventor 徐军王无敌薛艳艳董建树王庆国唐慧丽
Owner TONGJI UNIV
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