摘要2~5μm中红外固体激光器在民用和军事领域具有广阔的应用前景。获得具有高机械性能、宽泵浦波长范围、低成本的中红外激光材料是实现宽带可调谐中红外激光输出的关键。在本论文中，我们将硫系玻璃研磨成粉末与Cr2+:ZnSe纳米粉进行混合，分别采用熔体急冷法和热压法制备了镶嵌Cr2+:ZnSe纳米晶颗粒的硫系玻璃（复合材料）。研究了不同制备温度对这种复合材料中红外发光的影响，优化了这种复合材料的制备工艺。68850

该论文有图9幅，表2个，参考文献23篇。

毕业论文关键词：中红外固体激光器  Cr2+:ZnSe纳米晶  溶体急冷法  热压法

Preparation and Optical Properties of the Chalcogenide Glasses Containing Cr2+:ZnSe Nanocrystals

Abstract

2-5μm mid-infrared (MIR) solid-state lasers devices have been widely applied in military and civil fields. The crucial point to achieve tunable MIR laser output is to find MIR laser materials with good mechanical property, a wide range of pump wavelength and low cost. In this paper, chalcogenide glasses are ground into powders and mixed with Cr2+ : ZnSe nano particldes and then the chalcogenide glasses containing Cr2+:ZnSe nanocrystals (composite materials) are prepared using the mixed powers by the melt quenching technique or a hot pressing method.The effects of the perparation temperature on MIR luminescence of the composite materials are investigated and the preparation process for the composite materials is optimized. 

Key words: mid-infrared solid-state laser  Cr2+:ZnSe nanocrystals  melt quenching technique     hot pressing method

目录

摘要 I

Abstract II

目录 III

图清单 IV

表清单 IV

1绪论 1

1.1引言 1

1.2中红外激光技术 1

1.3硫系玻璃 2

1.4 Cr2+:ZnSe 3

2实验 4

2.1材料 4

2.2实验仪器 4

2.3溶体急冷法 5

2.4热压法 7

3镶嵌Cr2+:ZnSe的硫系玻璃的性能测试 9

3.1 DSC 9

3.2中红外荧光光谱 9

3.3红外透过率 9

3.4拉曼光谱 10

4.实验数据分析 10

4.1溶体急冷法 10

4.2热压法 12

5总结与展望 15

参考文献 16

致谢 18

图清单

图序号 图名称 页码

图2-1 热压机实物图 8

图2-2 热压机原理图 8

图4-1 熔体急冷法制备镶嵌Cr2+:ZnSe纳米晶的As40S57Se3玻璃的DSC曲线 10

图4-2