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Novel 1.54 mu m waveband rare earth ion activated yttrium oxide laser crystal

A technology for activating yttrium oxide and laser crystals, applied in crystal growth, single crystal growth, single crystal growth and other directions, which can solve the problem of less research on laser crystals

Inactive Publication Date: 2009-03-04
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

[0014] Apparently, Y 2 o 3 It is an excellent laser host crystal, Yb:Er:Ce:Y 2 o 3 It will also be a new type of high-quality laser crystal in the 1.54μm band, but for the Y 2 o 3 Laser crystals as host materials, the focus of current research is mainly on laser crystals activated by Nd and Yb, for other active ion-doped Y 2 o 3 Laser crystals are less studied, especially for Yb 3+ :Er 3+ : Ce 3+ Doped Y 2 o 3 Laser crystals, there are no research reports at home and abroad

Method used

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  • Novel 1.54 mu m waveband rare earth ion activated yttrium oxide laser crystal
  • Novel 1.54 mu m waveband rare earth ion activated yttrium oxide laser crystal

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Experimental program
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Embodiment 1

[0022] Embodiment 1: Yb:Er:Ce:Y 2 o 3 Crystal Growth Preparation

[0023] The instrument used for the growth of the crystal pulling method is a high-frequency pulling furnace, the crucible used is a Φ55mm×30mm molybdenum crucible, and the raw material used is 4N grade Y 2 o 3 、Er 2 o 3 , CeO 2 , Yb 2 o 3 . Prepare raw materials according to the following chemical reaction formula:

[0024]

[0025] x=1at%~30at%; y=1at%~50at%; z=1at%~50at%. Mix the raw materials evenly, press them into a sheet, place them in a platinum crucible, and slowly raise the temperature to the predetermined temperature for sintering at 150°C / h, and repeat this process until the X-ray powder diffraction results remain unchanged.

[0026] Put the raw materials into the molybdenum crucible of Φ55mm×30mm, in order to avoid the oxidation of the molybdenum crucible, first extract the air in the furnace, so that the air pressure in the furnace reaches 10 -3 Pa, and then fill in 0.04MPa and atmosp...

Embodiment 2

[0027] Embodiment two: Yb:Er:Ce:Y 2 o 3 Crystal Laser Experiments

[0028] Process high-quality Yb with a size of 5mm×5mm×5mm 3+ :Er 3+ : Ce 3+ :Y 2 o 3 For crystal devices, LD diodes in the 980nm band are used as pumping sources for laser experiments. The experimental device is shown in the attached figure, 1 in the figure is block Yb 3+ :Er 3+ : Ce 3+ :Y 2 o 3 Crystal; 2 is the LD diode and its power supply; 3 is the dielectric mirror that fully reflects the λ=~1.54μm band and fully transmits the 980nm band; 4 is the dielectric mirror that partially transmits the λ=~1.54μm band; 5 is the LPE- 1A laser energy meter.

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Abstract

The invention relates to novel 1.54 mu m wave-band rare earth ion activated yttria laser crystal which belongs to the field of laser crystal materials. The chemical formula of the crystal material is Yb: Er: Ce: Y2O3. Y2O3, Er2O3, CeO2, Yb2O3 serve as raw materials, and the Yb: Er: Ce: Y2O3 raw material is obtained through high-temperature solid phase reaction in reducing atmosphere; the crystal is grown through a Czochralski method in the reducing atmosphere. The material is used to output the 1.54mu m wave-band laser.

Description

technical field [0001] The invention relates to the field of laser crystal materials. Background technique [0002] The 1.5μm band laser is a light source that is safe for human eyes, and has a wide range of applications in optical communication, medical treatment, laser detection and ranging and other fields. [0003] Doped with Er 3+ Ionic 4 I 13 / 2 → 4 I 15 / 2 The transition can produce lasing in the ~1.54μm band, but its laser efficiency is very low, which is mainly due to the Er 3+ The efficiency of the ion absorption pump source is very low. For this reason, Yb can be co-doped 3+ ions to sensitize Er 3+ The ions are pumped by the LD laser pump source in the 980nm band to realize the Yb 3+ 2 f 5 / 2 →Er 3+ 4 I 11 / 2 energy transfer, thereby increasing the pumping efficiency. Because Er 3+ pump level 4 I 11 / 2 to laser upper level 4 I 13 / 2 The fluorescence branching ratio is only 10-20%, so in general, materials with high phonon energy are used as laser host...

Claims

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Application Information

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IPC IPC(8): C30B29/16C30B29/22C30B15/00
Inventor 涂朝阳游振宇王燕朱昭捷李坚富
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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