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Thulium-doped 2[mu]m laser crystal and preparation method thereof

A technology of laser crystals and crystals, applied in the field of materials, can solve the problems of difficult laser crystal growth, laser crystals, etc., and achieve the effect of facilitating large-scale industrial production, high emission intensity, and low equipment requirements

Inactive Publication Date: 2021-02-26
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: the difficulty in growing existing laser crystals and how to improve the spectral performance and laser performance of laser crystals

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] with an analytical balance according to Weigh 12mmol CsCl, 6mmol NaCl, 2.91mmol Bi 2 o 3 , 0.09 mmol Tm 2 o 3 , Dissolve CsCl and NaCl in a beaker filled with hydrochloric acid, Bi 2 o 3 、Tm 2 o 3 Dissolve in another beaker containing hydrochloric acid; after the precursors in the two beakers are dissolved, mix the solutions in the two beakers, add a stirring bar after mixing, and stir in a water bath at 80°C for two hours; After one hour, move the solution into a 100mL Teflon autoclave, place the Teflon autoclave in an oven, set the temperature at 150°C, and react for 24 hours; After the temperature was lowered to 50 °C, it was cooled naturally, and finally the Cs was filtered and washed with isopropanol. 2 NaBi 0.97 Cl 6 : 0.03Tm crystal.

[0028] The obtained crystal size is 6mm × 4mm × 3mm, and the analysis by ICP-AES (inductively coupled plasma atomic emission spectrometer) shows that Tm 3+ The ion content is 2.8 at.%.

Embodiment 2

[0030] with an analytical balance according to Weigh 12mmol CsCl, 2.4mmolNaCl, 3.6mmol AgCl, 2.85mmol In 2 o 3 , 0.15 mmol Tm 2 o 3 , Dissolve CsCl and AgCl in a beaker filled with hydrochloric acid, In 2 o 3 、Tm 2 o 3 Dissolve in another beaker containing hydrochloric acid; after the precursors in the two beakers are dissolved, mix the solutions in the two beakers, add a stirring bar after mixing, and stir in a water bath at 80°C for two hours; After one hour, move the solution into a 100mL Teflon autoclave, place the Teflon autoclave in an oven, set the temperature at 180°C, and react for 48 hours; After the temperature was lowered to 50 °C, it was cooled naturally, and finally the Cs was filtered and washed with isopropanol. 2 Na 0.4 Ag 0.6 In 0.95 Cl 6 : 0.05Tm crystal.

[0031] The obtained crystal size is 4mm × 4mm × 3mm, and the analysis by ICP-AES (inductively coupled plasma atomic emission spectrometer) shows that Tm 3+ The ion content is 4.8 at.%.

Embodiment 3

[0033] with an analytical balance according to Weigh 12mmol CsCl, 6mmol AgCl, 2.91mmol Bi 2 o 3 , 0.09 mmol Tm 2 o 3 , Dissolve CsCl and AgCl in a beaker filled with hydrochloric acid, Bi 2 o 3 、Tm 2 o 3 Dissolve in another beaker containing hydrochloric acid; after the precursors in the two beakers are dissolved, mix the solutions in the two beakers, add a stirring bar after mixing, and stir in a water bath at 80°C for two hours; After one hour, move the solution into a 100mL Teflon autoclave, put the Teflon autoclave in an oven, set the temperature at 150°C, and react for 36 hours; After the temperature was lowered to 50 °C, it was cooled naturally, and finally the Cs was filtered and washed with isopropanol. 2 AgBi 0.97 Cl 6 : 0.03Tm crystal.

[0034] The obtained crystal size is 6mm × 5mm × 4mm, and the analysis by ICP-AES (inductively coupled plasma atomic emission spectrometer) shows that Tm 3+ The ion content is 2.9 at.%.

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Abstract

The invention discloses a thulium-doped 2[mu]m laser crystal and a preparation method thereof. The crystal is of a double perovskite structure and belongs to a cubic crystal system, and the composition expression of the crystal is A2MM<III>X6: xTm, wherein A is a monovalent cation, M is a monovalent cation, M<III> is a trivalent cation, X is a halogen anion, and 0< x < = 0.1. The preparationmethod comprises the following steps of: respectively dissolving AX, MX, M<III>2O3 and Tm2O3 in HX acid; mixing the two solutions; reacting the mixed solution in an oven; and after the reaction isfinished, carrying out cooling, filtering and washing. The laser crystal disclosed by the invention can realize 2[mu]m emission by using 808nm laser diode pumping, and can be applied to the fields oflaser ranging, laser remote sensing, laser imaging, photoelectric countermeasure, medical diagnosis and treatment, scientific instruments, material processing, optical signal processing, data processing, environmental monitoring of differential absorption laser radar and the like.

Description

technical field [0001] The invention relates to an optoelectronic functional material, in particular to a thulium-doped 2 μm laser crystal and a preparation method thereof, belonging to the field of material technology. Background technique [0002] The 2μm band laser is a safe laser for the human eye, which can be absorbed by the cornea at the front of the eye, and the threshold of damage to the retina is much larger than that of traditional lasers with a wavelength below 1.4μm, which makes the 2μm laser unique in some applications advantages, such as eye-safe lidar and free-space optical communication; since the 2μm laser is located at the absorption peak of water molecules and 70% of the composition of human tissue is water, this makes the 2μm laser can be used as a "scalpel" in medical treatment. Human tissue is removed, and the diameter of the laser beam can be very small, so it can achieve high precision in the horizontal and vertical cutting dimensions to reduce the a...

Claims

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Application Information

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IPC IPC(8): C30B29/12C30B29/54C30B7/10H01S3/16
CPCC30B7/10C30B29/12C30B29/54H01S3/1616H01S3/1645
Inventor 张彦黄礼武徐家跃田甜袁军平罗宽宽
Owner SHANGHAI INST OF TECH
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