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(Yb<3+>: LaMgB5O10) doped laser crystal and preparation method thereof

A laser crystal, ytterbium boric acid technology, applied in crystal growth, chemical instruments and methods, single crystal growth, etc., can solve the problems of low energy utilization rate of glass materials, no ytterbium-doped laser materials, and unsatisfactory overall performance. The effect of excellent optical properties, simple growth process, and good thermal conductivity

Inactive Publication Date: 2014-06-18
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

At present, there are relatively few ytterbium-doped laser materials that can achieve ultrashort pulse output, and the pulse width is also relatively large. Although ytterbium-doped glass materials have shorter pulse output than ytterbium-doped crystals, the energy utilization of glass materials The rate is very low and the overall performance is not ideal
So far, there is no ideal commercial ytterbium-doped laser material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: with Li 2 O-B 2 o 3 -LiF flux growth doping concentration is 1.0at.%Yb 3+ Yb 3+ :LaMgB 5 o 10 crystals.

[0016] The growth material is LaMgB 5 o 10 : Li 2 O: H 3 BO 3 : LiF=1:2:5:1 (molar ratio), Yb 3+ The doping concentration of ions is 1.0 at.%. Using the flux method, the raw materials weighed according to the ratio are fully ground and evenly put into a φ60×50mm platinum crucible, the growth temperature is 930-980°C, the cooling rate is 0.5°C / day, and the crystal rotation speed is 5 revolutions / min. Grow out the size 25×25×10mm 3 high quality Yb 3+ :LaMgB 5 o 10 crystals. The ICP (plasma emission spectrometry) analysis shows that Yb in the crystal 3+ The ion content is 0.5 at%.

Embodiment 2

[0017] Embodiment 2: with Li 2 O-B 2 o 3 -LiF flux system growth doping concentration is 5.0at.%Yb 3+ Yb 3+ :LaMgB 5 o 10 laser crystals.

[0018] The growth material is LaMgB 5 o 10 : Li 2 O: H 3 BO 3 : LiF=1:2:8:1 (molar ratio), Yb 3+ The doping concentration of ions is 5.0 at.%. Using the flux method, the raw materials weighed according to the ratio are fully ground and evenly put into a φ60×50mm platinum crucible, the growth temperature is 900-950°C, the cooling rate is 1°C / day, and the crystal rotation speed is 30 rpm. Grow out the size 25×15×10mm 3 high quality Yb 3+ :LaMgB 5 o 10 crystals. The ICP (plasma emission spectrometry) analysis shows that Yb in the crystal 3+ The ion content is 2.0 at%.

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Abstract

The invention relates to a (Yb<3+>: LaMgB5O10) doped laser crystal and a growth method thereof. The crystal belongs to a monoclinic system and a P21 / c space group; cell parameters are shown in the specification, wherein Z=4, and Dc=3.92 g / cm<3>. The crystal can be grown by using a flux growth method; by taking Li2O-B2O3-LiF as a mixed flux, under the conditions that the growth temperature is 900-980 DEG C, the cooling rate is 0.5-3 DEG C / day and the rotating speed is 5-30 r / min, a Yb3<+>: LaMgB5O10 single crystal with a high quality and a relatively large size is grown. The crystal shows relatively broad absorption and emission spectrums. The crystal can become a new ultra-short pulse laser crystal, and can be practically applied.

Description

technical field [0001] The invention relates to the technical field of optoelectronic functional materials, in particular to a laser crystal material used as a working substance in an ultrafast solid-state laser. Background technique [0002] In recent years, with the rapid development of laser technology, lasers have been widely used in many fields such as optics, communications, medicine, and military affairs. Especially all-solid-state lasers have attracted people's attention because of their small size, low price, and simple structure. . All-solid-state lasers generally generate laser output by pumping a laser crystal with a laser diode, and the laser crystal is its core. Laser crystals are composed of host crystals and active ions, their main physical and chemical properties are determined by the host crystals, and their spectral characteristics mainly depend on the active ions. [0003] Ytterbium ion (Yb 3+ ) activated laser crystal, its absorption band is in the ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/22C30B9/12H01S3/16
Inventor 黄溢声王国富林州斌张莉珍孙士家
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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