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Tm:YAG

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Tm:YAG
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Tm：YAG在0.82μm波长范围内的3H4–3H6跃迁上运行。它可以用波长范围为0.78 – 0.8μm的高效二极管激光器泵浦。该过渡具有小的量子缺陷，可实现低散热。为了获得良好的能量存储，激发态寿命可以很长，大约为毫秒。它还具有足够的增益带宽，可根据主体材料和工作温度来支持亚ps长的脉冲。与单晶材料相比，透明陶瓷材料结合了单晶和玻璃的优点。通过固态反应和真空烧结来制造透明陶瓷材料。因此，它们不仅具有与单晶一样优良的光学和热性能，而且还具有大尺寸、高浓度的特点。此外，它们还具有其他优势，例如制造周期短，成本较低和多功能样品。

材料规格

Tm浓度公差（atm％）Tm:0.5~5at%
取向[111]，<5º
平行性≤10″
垂直性≤5′
表面质量10-5 (MIL-O-13830A)
波前失真≤ 0.125λ/25 mm @632.8nm
表面平整度λ/8@632nm
通光孔径>95%
倒角 0.15±0.05mm
尺寸D: 2~10mm，L: 3~150mm
涂层AR: ≤0.25% @2μm

物理和化学特性

光学和光谱性质

激光跃迁3F4→3H6
激光波长1.87~2.16μm
折射率的温度依赖性7.3 10-6/K
吸收截面7.5×10-21cm2
二极管泵浦带785nm, 680nm
发射截面@ 2013nm2.9×10-20 cm2
荧光寿命 11ms
折射率@ 632nm1.83

参考文献

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