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2.7 to 3 micron laser crystals and preparation method thereof

A laser crystal and crystal technology, applied in crystal growth, chemical instruments and methods, single crystal growth, etc., to achieve the effects of improving efficiency and power, improving beam quality, and high gain

Active Publication Date: 2012-11-21
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] According to retrieval, there is no information about Er,Re:YAP (Re=Pr) at home and abroad. 3+ , Eu 3+ ,Ho 3+ ,Tm 3+ or Tb 3+ ) Research report on laser crystal

Method used

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  • 2.7 to 3 micron laser crystals and preparation method thereof
  • 2.7 to 3 micron laser crystals and preparation method thereof
  • 2.7 to 3 micron laser crystals and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1: Growing Er 3+ The concentration is 5at%, Re 3+ for Pr 3+ Ion, the concentration is 0.1at% Er 0.05 PR 0.001 Y 0.949 AlO 3 the crystal

[0037] attached figure 1 In the Er,Re:YAP crystal shown, the activated ion Er 3+ coupled with energy level ions Re 3+ (Pr 3+ 、Eu 3+ 、Ho 3+ 、Tm 3+ or Tb 3+ ) energy transfer diagram. by Er 3+ of 4 I 11 / 2 and 4 I 13 / 2 The transition of particles between energy levels can produce 2.7-3μm laser light. where Pr 3+ is the active ion Er 3+ The energy-level coupled ions of Pr 3+ of 3 f 4 Energy level and Er 3+ of 4 I 13 / 2 The positions of the energy levels are close, so the Er 3+ of 4 I 13 / 2 Energy-level particle evacuation rate reduces lifetime, reduces laser output threshold of 2.7-3μm, and improves output efficiency and power.

[0038] Er, Re: YAP crystal refers to Er 3+ The concentration is between 5-20at%, Re 3+ The doping concentration of ions is between 0.1-1at%. Er in this example 3+ The conc...

Embodiment 2

[0041] Example 2: Growing Er 3+ The concentration is 8at%, Re=Eu 3+ Ion, the concentration is 0.3at% Er 0.08 Eu 0.003 Y 0.917 AlO 3 the crystal

[0042] attached figure 1 In the Er,Re:YAP crystal shown, the activated ion Er 3+ coupled with energy level ions Re 3+ (Pr 3+ 、Eu 3+ 、Ho 3+ 、Tm 3+ or Tb 3+ ) energy transfer diagram. by Er 3+ of 4 I 11 / 2 and 4 I 13 / 2 The transition of particles between energy levels can produce 2.7-3μm laser light. where Eu 3+ is the active ion Er 3+ The energy-level coupled ions of Eu 3+ of 7 f 6 Energy level and Er 3+ of 4 I 13 / 2 The positions of the energy levels are close, so the Er 3+ of 4 I 13 / 2 Energy-level particle evacuation rate reduces lifetime, reduces laser output threshold of 2.7-3μm, and improves output efficiency and power.

[0043] Er, Re: YAP crystal refers to Er 3+ The concentration is between 5-20at%, Re 3+ The doping concentration of ions is between 0.1-1at%. Er in this embodiment 3+ The concentra...

Embodiment 3

[0046] Example 3: Growing Er 3+ The concentration is 10at%, Re=Ho 3+ Ion, the concentration is 0.5at% Er 0.10 Ho 0.005 Y 0.895 AlO 3 the crystal

[0047] attached figure 1 In the Er,Re:YAP crystal shown, the activated ion Er 3+ coupled with energy level ions Re 3+ (Pr 3+ 、Eu 3+ 、Ho 3+ 、Tm 3+ or Tb 3+ ) energy transfer diagram. by Er 3+ of 4 I 11 / 2 and 4 I 13 / 2 The transition of particles between energy levels can produce 2.7-3μm laser light. Among them Ho 3+ is the active ion Er 3+ The energy level coupling ion, due to the Ho 3+ of 5 I 7 Energy level and Er 3+ of 4 I 13 / 2 The positions of the energy levels are close, so the Er 3+ of 4 I 13 / 2 Energy-level particle evacuation rate reduces lifetime, reduces laser output threshold of 2.7-3μm, and improves output efficiency and power.

[0048] Er, Re: YAP crystal refers to Er 3+ The concentration is between 5-20at%, Re 3+ The doping concentration of ions is between 0.1-1at%. Er in this embodiment 3...

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Abstract

The invention relates to 2.7 to 3 micron laser crystals and a preparation method thereof. The crystals have a molecular formula of Er, Re:YAP, wherein the Er is the abbreviation of Er3+ and takes an effect of activating ions; the Re is Pr3+, Eu3+, Ho3+, Tm3+ or Tb3+, can be used as an energy-level coupled ion of active ions Er3+ and can be used for effectively pumping out particles of the Er3+ ions, of which the energy level is 4I13 / 2 under 2.7 to 3 micron laser, reducing the energy level service life, reducing the threshold value of the laser and improving the output efficiency and power of the laser; and the YAP is the abbreviation of yttrium aluminate YAlO3 and is used for providing a crystal field for the energy-level coupled ions and the active ions. According to the invention, the 2.7 to 3mu.m high-efficiency polarized laser can be obtained and the laser on the wave band has important application in the fields of medical treatment, scientific research, military and the like.

Description

technical field [0001] The invention belongs to the field of functional crystal materials, specifically a high-efficiency 2.7-3 micron Er, Re:YAP laser crystal, wherein Re=Pr 3+ , Eu 3+ ,Ho 3+ ,Tm 3+ or Tb 3+ , can be used as the active ion Er 3+ The energy level coupling ions reduce Er 3+ The lower energy level lifetime of the laser can improve the output efficiency and power of the 2.7-3 micron laser. Background technique [0002] Erbium ion 4 I 11 / 2 → 4 I 13 / 2 Transition, can produce 2.7-3μm band laser in different substrates, this band overlaps with the strong absorption peak position of water, so the absorption rate of water to it is particularly high, it is an ideal working band for fine surgery, this property makes Erbium lasers have been widely used in the fields of biology and medicine. In addition, by using 2.7-3μm laser to pump infrared nonlinear crystals to realize optical parametric oscillation, a high-power infrared light source of 3-19μm can be obta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/24C30B15/00H01S3/16
Inventor 孙敦陆罗建乔陈家康张会丽刘文鹏韩松李为民秦清海程毛杰张庆礼殷绍唐
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI