鉺玻璃 (Er Yb Glass)
我司的Er,Yb:glass玻璃產(chǎn)品，又稱鉺玻璃，是一種綜合性能良好的激光玻璃。Er3+ , Yb3+共摻雜磷酸鹽玻璃（Er, Yb:磷酸鹽玻璃）是一種眾所周知且常用的活性介質(zhì)，它發(fā)射的激光在1.5 – 1.6微米的“人眼安全”光譜范圍內(nèi)。1540nm激光器正處于人眼安全和光纖通信窗口的位置。這就導(dǎo)致了激光的產(chǎn)生和信號(hào)的放大。1540nm激光器已廣泛應(yīng)用于測距儀，雷達(dá)，目標(biāo)識(shí)別等領(lǐng)域。磷酸鹽玻璃結(jié)合了4I13/2Er3+上激光能級(jí) 的長壽命（~8 ms）激光能級(jí)和與Yb3+共振的低壽命（2-3 ms） 2F5/2激發(fā)態(tài)。從4I11/2到4I13/2的快速非輻射多聲子弛豫由于分別在2F5/2 和4I11/2 能級(jí)激發(fā)的Yb3+和Er3+離子之間的相互作用，能級(jí)大大降低了反向能量轉(zhuǎn)移和上轉(zhuǎn)換損失。Er3+/Yb3+共摻磷酸鹽玻璃作為LD泵浦的1540nm人眼安全輻射源，可發(fā)射直接用于激光測距儀和電信通信的人眼安全1540nm激光輻射。具有1540nm波長的輻射輸出的Er,Ybglass激光器不需要添加額外的組分。Er3+/Yb3+共摻磷酸鹽玻璃激光器是一種人眼安全波長激光器。由于其體積小、成本低而備受關(guān)注。EAT14：Yb3+，Er3+共摻磷酸鹽玻璃，適用于高重復(fù)頻率（1-6Hz）激光二極管泵浦1535nm激光器。在這種EAT14玻璃中可以實(shí)現(xiàn)高Yb3+摻雜。
特點(diǎn)
- 吸收帶寬
- 熒光壽命長
- 光學(xué)質(zhì)量高
- 眼睛安全
- 斜率效率高
激光規(guī)格
| ? | EAT14? | WM4 |
| 受激發(fā)射的橫截面（10-20cm2） | 0.8 | 0.75 |
| 熒光壽命（毫秒）* | 7.7-8.0 | 7.7-8.2 |
| 中心激光波長（nm） | 1535 | 1535 |
光學(xué)性質(zhì)
| ? | EAT14 | WM4 |
| 折射率（1535nm） | 1.524 | 1.528 |
| 折射率（d 589.3nm） | 1.532 | 1.536 |
| 阿貝值 | 66 | 66 |
| dn / dT（10-6 /℃）（20?100℃） | -1.72 | -3 |
熱規(guī)范
| ? | EAT14? | WM4 |
| 轉(zhuǎn)變溫度 （℃） | 556 | 530 |
| 軟化溫度 （℃） | 605 | 573 |
| 線性熱膨脹系數(shù)（10 -7/ K）（20?100℃） | 87 | 82 |
| 線性熱膨脹系數(shù)（10-7 / K）（100?300℃） | 95 | 96 |
| 光程長度的熱系數(shù)（10-6/ K）（20?100℃） | 2.9 | 1.4 |
| 導(dǎo)熱系數(shù)（25℃）（W / mK） | 0.7 | 0.7 |
其他規(guī)格
| ? | EAT14 | WM4 |
| 密度g / cm3 | 3.06 | 2.83 |
| 化學(xué)耐久性（在100℃蒸餾水中的失重率）（μg/ hr.cm2） | 52 | 82 |
吸收和發(fā)射光譜
射曲線-中-300x230.png) |  |
| EAT-14發(fā)射曲線 | EAT-14吸收曲線 |
 | 射譜-南京光寶-CRYLINK-300x300-1-300x300.jpg) |
拋光規(guī)格
| 方向公差 | < 0.5° |
| 厚度/直徑公差 | ±0.05 mm |
| 表面平整度 | <λ/8@632 nm |
| 波前畸變 | <λ/4@632 nm |
| 表面質(zhì)量 | 5-Oct |
| 平行性 | 10〞 |
| 垂直性 | 15ˊ |
| 通光孔徑 | >90% |
| 倒角 | <0.1×45° |
| 最大尺寸 | dia (3-12.7)×（3-150）mm2 |
參考文獻(xiàn)
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