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Nd:YVO4晶体 |
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Nd:YVO4 (掺钕钒酸钇晶体)单晶是二极管泵蒲固体激光 器的基质晶体 。具有的较高的激光损伤阈值,以及好的光 学和机械性能。大的的发射截面和高泵浦光吸收使它成为 小型激光器的首选晶体。装置紧需少量不同就可使Nd:YVO4 产生红外、绿光和蓝光
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Nd:YVO4性能指标 |
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发射波长 |
914nm, 1064 nm, 1342 nm |
晶体类型 |
正单轴晶, no=na=nb, ne=nc, |
no=1.9573, ne=2.1652, @ 1064nm |
no=1.9721, ne=2.1858, @ 808nm |
no=2.0210, ne=2.2560, @ 532nm |
Sellmeier 方程 (纯 YVO4 晶体): |
no2=3.77834+0.069736/(λ2 - 0.04724) - 0.0108133λ2 |
ne2=4.59905+0.110534/(λ2 - 0.04813) - 0.0122676λ2 |
热光系数: |
dna/dT=8.5x10-6/K, dnc/dT=3.0x10-6/K |
发射截面 |
25.0x10-19 cm2, @1064 nm |
荧光寿命 |
90 ms ( 2 atm% Nd 掺杂50 ms) @ 808 nm |
吸收系数 |
31.4 cm-1 @ 808 nm |
吸收长度 |
0.32 mm @ 808 nm |
本征损耗 |
Less 0.1% cm-1, @1064 nm |
增益带宽 |
0.96 nm (257 GHz) @ 1064 nm |
偏振激光 |
p 偏振; 平行与光轴 (c轴) |
半导体泵浦光光效率 |
> 60% | |
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CaF2晶体 |
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氟化钙晶体是一种很重要的光学晶体, 它具有很多优良的特性: 在真空紫 外到红外(0.13-11μm)的 波段有很高 的透过率;用在光学棱镜、透镜 、锲 角片、 窗口片以及各种光学系统中, 特别适合做紫外和深紫外的窗口。
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CaF2性能指标 |
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密度 |
3.18 g/cm3 |
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熔点 |
1357~1360℃ |
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晶格常数 |
5.46 Å |
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努普硬度 |
178 [100], 160 [110]kg/mm2 |
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介电常数 |
6.76 ,105HZ |
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晶体类型 |
cubic, CaF2 type structure |
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解离面 |
-111 |
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应用 |
激光窗口材料,可用于红外,(深)紫外 |
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Nd:YAG晶体 |
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Nd:YAG单晶是最重要的激光晶体,广泛应用于工业、医疗 和科学领域。主要优点是:低出光阈值、高增益,高效率, 低1064nm损耗;同时还有高光学质量、热传导性好、抗热 冲击和机械强度高特性,使得Nd:YAG成为了连续,脉冲和 锁模激光的最合适和商品化的激光晶体。Nd:YAG晶体也广 泛用于各种固体激光器系统:倍频连续波、高能量Q开关, 倒空腔等等。
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Nd:YAG性能指标 |
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化学式 |
Nd:Y3A15O12 |
晶体结构 |
立方晶系 |
晶格常数 |
12.01Ä |
掺杂度 |
-1.2 x 1020 cm-3 |
熔点 |
1970 °C |
密度 |
4.56 g/cm3 |
莫氏硬度 |
8.5 |
折射率 |
1.82 |
热膨胀系数 |
7.8 x 10-6 /K [111], 0 - 250 °C |
热导率 |
14 W/m /K @20 °C, 10.5 W /m /K @100°C |
激光波长 |
1064 nm |
受激发射截面 |
2.8x10-19 cm-2 |
弛豫时间 |
30 ns |
激发态寿命 |
550 ms |
自发荧光 |
230 ms |
损耗系数 |
0.003 cm-1 @ 1064 nm |
有效发射截面 |
2.8 x 10-19 cm2 |
泵浦波长 |
807.5 nm |
泵浦波长的吸收带宽 |
1 nm |
线宽 |
0.6 nm |
偏振态 |
非偏振 | |
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| 详细了解 请登录公司主页http://www.fiblaser.com/Service.html |
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