Optical Spectra of Tm3+ -doped CdWO4 Crystal

HU Hao-yang; WAN Yun-tao; HU Jian-xu; XIA Hai-ping; ZHANG Yue-pin; CHEN Hong-bing

doi:10.3788/fgxb20123304.0377

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Optical Spectra of Tm³⁺ -doped CdWO₄ Crystal

paper | 更新时间：2020-08-12

- Optical Spectra of Tm³⁺ -doped CdWO₄ Crystal
- Chinese Journal of Luminescence Vol. 33, Issue 4, Pages: 377-382(2012)
- 作者机构：
  
  1. 宁波大学光电子功能材料重点实验室,浙江宁波,315211
  2. 宁波大学材料科学与化学工程学院,浙江宁波,315211
- 作者简介：
- 基金信息：
  
  Sponsored by K. C. Wong Magna Fund in Ningbo University
- DOI：10.3788/fgxb20123304.0377
  CLC： O782
- Received：11 December 2011，
  
  Revised：14 February 2012，
  
  Published Online：10 April 2012，
  
  Published：10 April 2012
- 稿件说明：
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胡皓阳, 万云涛, 胡建旭, 夏海平, 张约品, 陈红兵. Tm3+掺杂CdWO4单晶的发光特性[J]. 发光学报, 2012,33(4): 377-382

HU Hao-yang, WAN Yun-tao, HU Jian-xu, XIA Hai-ping, ZHANG Yue-pin, CHEN Hong-bing. Optical Spectra of Tm3+ -doped CdWO4 Crystal[J]. Chinese Journal of Luminescence, 2012,33(4): 377-382
胡皓阳, 万云涛, 胡建旭, 夏海平, 张约品, 陈红兵. Tm3+掺杂CdWO4单晶的发光特性[J]. 发光学报, 2012,33(4): 377-382 DOI： 10.3788/fgxb20123304.0377.

HU Hao-yang, WAN Yun-tao, HU Jian-xu, XIA Hai-ping, ZHANG Yue-pin, CHEN Hong-bing. Optical Spectra of Tm3+ -doped CdWO4 Crystal[J]. Chinese Journal of Luminescence, 2012,33(4): 377-382 DOI： 10.3788/fgxb20123304.0377.

摘要

用坩埚下降法生长获得了尺寸为

25 mm90 mm、Tm

初始掺杂摩尔分数为0.5%的CdWO

单晶。晶体的颜色由上部血红色逐渐加深至下部的黑褐色。对不同部位的晶体薄片进行800 ℃的氧化处理

测定了处理前后不同部位的吸收光谱和FTIR红外光谱。经氧气退火处理后

由于氧空位缺陷减少

晶体的颜色明显变淡。在吸收光谱中观测到421

684

805 nm的吸收带。其中421 nm的吸收峰随退火温度的升高而逐步减弱

经800 ℃处理后基本消失。在808 nm激光二极管激发下

观察到中心波长为1.5 m和1.8 m的荧光发射

分别对应于Tm

的

的能级跃迁。

Abstract

-doped CdWO

single crystal with a size of

25 mm90 mm was grown by the Bridgman method. The raw mole fraction of Tm

in crystal was 0.5%.The upper part of crystal grown at the final stage appears blood-red color

while the lower at the initial stage brown-blackness. The absorption and IR spectra of various parts of crystal before and after O

-annealing were characterized. The color of the crystal becomes weak after the crystal is treated at O

atmosphere due to the reducing of oxygen vacant defect. The peaks of 421

684 and 805 nm were observed in the absorption spectra. The peak of 421 nm becomes weak gradually with the increase of annealing tempearture

and almost disappears after 800 ℃. The emission spectra of single crystal were also investigated under the excitation of 808 nm at room temperature. A strong emission band at 1.50 m and a weak band at 1.80 m were observed

which corresponding to the

and

transitions of Tm

respectively.

关键词

Keywords

references

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