Growth and Properties of Novel Mid-infrared Laser Crystal Er3+ /Ho3+/Eu3+∶PbF2

Jia-yu LIAO; Hong-ling CHEN; Xiao-chen NIU; Hui-yu TAN; Jia-wan SONG; Pei-xiong ZHANG; Hao YIN; Zhen LI; Zhen-qiang CHEN

doi:10.37188/CJL.20210312

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Growth and Properties of Novel Mid-infrared Laser Crystal Er³⁺ /Ho³⁺/Eu³⁺∶PbF₂

Synthesis and Properties of Materials | 更新时间：2021-12-17

- Growth and Properties of Novel Mid-infrared Laser Crystal Er³⁺ /Ho³⁺/Eu³⁺∶PbF₂
  增强出版
- Chinese Journal of Luminescence Vol. 42, Issue 12, Pages: 1852-1862(2021)
- 作者机构：
  
  1.广东省晶体与激光技术工程研究中心，广东　广州　510632
  2.暨南大学理工学院　光电工程系，广东　广州　510632
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(51972149;51872307;61935010;51702124);Fundamental Research Funds for the Central Universities(21620445)
- DOI：10.37188/CJL.20210312
  CLC： O482.31
- Published：2021-12，
  
  Received：28 September 2021，
  
  Revised：06 October 2021，
- 稿件说明：
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JIA-YU LIAO, HONG-LING CHEN, XIAO-CHEN NIU, et al. Growth and Properties of Novel Mid-infrared Laser Crystal Er³⁺ /Ho³⁺/Eu³⁺∶PbF₂. [J]. Chinese journal of luminescence, 2021, 42(12): 1852-1862.
DOI：

JIA-YU LIAO, HONG-LING CHEN, XIAO-CHEN NIU, et al. Growth and Properties of Novel Mid-infrared Laser Crystal Er³⁺ /Ho³⁺/Eu³⁺∶PbF₂. [J]. Chinese journal of luminescence, 2021, 42(12): 1852-1862. DOI： 10.37188/CJL.20210312.

摘要

采用垂直布里奇曼法成功生长了Er

/Ho

/Eu

三掺杂PbF

的中红外激光晶体。该晶体在980 nm泵浦下，首次获得了从2 600~3 200 nm的宽带中红外发光，其半高宽(FWHM)为300 nm，这是Er

的2.7 μm发射峰(2 600~2 950 nm)和Ho

的2.9 μm发射峰(2 800~3 200 nm)叠加的结果。此外，失活离子Eu

的引入可以有效克服Er

和Ho

离子的自终止瓶颈效应。研究发现，与Er

/Ho

∶PbF

晶体相比，Er

/Ho

/Eu

∶PbF

晶体具有更高的荧光分支比，在Er

11/2

→

13/2

跃迁为18.7%和Ho

→

跃迁为18.0%；以及有更大的发射截面，在2 745 nm时为0.621×10

-20

，在2 905 nm时为0.728×10

-20

。这些有利的光谱特性表明，Er

/Ho

/Eu

∶PbF

晶体在商用980 nm激光二极管泵浦下，可能是2.6~3.2 μm中红外激光器的一种有前景的材料。

Abstract

In this work

/Ho

/Eu

tri-doped PbF

mid-infrared laser crystal was successfully grown using the vertical Bridgman method. As far as we know

it is the first time to obtain a broadband mid-infrared luminescence extending from 2 600 nm to 3 200 nm with a full width at half maximum (FWHM) of 300 nm under 980 nm pump

which is the result of the superposition of the 2.7 μm emission peak of Er

(2 600-2 950 nm) and 2.9 μm emission peak of Ho

(2 800-3 200 nm). What's more

the introduction of deactivation ions Eu

can conquer self-termination bottleneck of both Er

and Ho

ions effectively. It is found that

compared with the Er

/Ho

∶PbF

crystal

the Er

/Ho

/Eu

∶PbF

crystal has higher fluorescence branching ratio 18.7% of Er

11/2

→

13/2

transition and 18.0% of Ho

→

transition

and larger emission cross section 0.621×10

-20

at 2 745 nm and 0.728×10

-20

at 2 905 nm. These advantageous spectroscopic characteristics suggest that the Er

/Ho

/Eu

∶PbF

crystal may be a promising material for 2.6-3.2 μm mid-infrared lasers under the pump of a commercial 980 nm laser diodes (LDs).

关键词

PbF2晶体Er3+/Ho3+/Eu3+中红外发光失活

Keywords

PbF2 crystalEr3+/Ho3+/Eu3+mid-infrared luminescencedeactivation

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