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空气隙的零级波片是由两片石英基片和一个固定外框组成的， 由于这种波片是空气隙的，所以可以承受很高的能量而不损坏。
产品参数：
材料：石英晶体
尺寸容差：+0.0/-0.1mm
光洁度：60-40 
通光孔径：>90%
波前畸变：λ/8 @632.8nm
平行度：< 1 arc sec
延迟：<λ/300
镀膜：增透膜
波长范围：190-2200nm
损伤阈值：>20J/cm2, 20ns, 20Hz @1064nm
| Part Number | Diameter(mm) | Wavelength(nm) | Wave |
| LOWPAZ-12.7H-400 | 12.70 | 400 | Half Wave(λ/2) |
| LOWPAZ-12.7Q-400 | 12.70 | 400 | Quarter Wave(λ/4) |
| LOWPAZ-15H-400 | 15.00 | 400 | Half Wave(λ/2) |
| LOWPAZ-15Q-400 | 15.00 | 400 | Quarter Wave(λ/4) |
| LOWPAZ-20H-400 | 20.00 | 400 | Half Wave(λ/2) |
| LOWPAZ-20Q-400 | 20.00 | 400 | Quarter Wave(λ/4) |
| LOWPAZ-25.4H-400 | 25.40 | 400 | Half Wave(λ/2) |
| LOWPAZ-25.4Q-400 | 25.40 | 400 | Quarter Wave(λ/4) |
| LOWPAZ-30H-400 | 30.00 | 400 | Half Wave(λ/2) |
| LOWPAZ-30Q-400 | 30.00 | 400 | Quarter Wave(λ/4) |
| LOWPAZ-38.1H-400 | 38.10 | 400 | Half Wave(λ/2) |
| LOWPAZ-38.1Q-400 | 38.10 | 400 | Quarter Wave(λ/4) |
| LOWPAZ-12.7H-532 | 12.70 | 532 | Half Wave(λ/2) |
| LOWPAZ-12.7Q-532 | 12.70 | 532 | Quarter Wave(λ/4) |
| LOWPAZ-15H-532 | 15.00 | 532 | Half Wave(λ/2) |
| LOWPAZ-15Q-532 | 15.00 | 532 | Quarter Wave(λ/4) |
| LOWPAZ-20H-532 | 20.00 | 532 | Half Wave(λ/2) |
| LOWPAZ-20Q-532 | 20.00 | 532 | Quarter Wave(λ/4) |
| LOWPAZ-25.4H-532 | 25.40 | 532 | Half Wave(λ/2) |
| LOWPAZ-25.4Q-532 | 25.40 | 532 | Quarter Wave(λ/4) |
| LOWPAZ-30H-532 | 30.00 | 532 | Half Wave(λ/2) |
| LOWPAZ-30Q-532 | 30.00 | 532 | Quarter Wave(λ/4) |
| LOWPAZ-38.1H-532 | 38.10 | 532 | Half Wave(λ/2) |
| LOWPAZ-38.1Q-532 | 38.10 | 532 | Quarter Wave(λ/4) |
| LOWPAZ-12.7H-633 | 12.70 | 632.8 | Half Wave(λ/2) |
| LOWPAZ-12.7Q-633 | 12.70 | 632.8 | Quarter Wave(λ/4) |
| LOWPAZ-15H-633 | 15.00 | 632.8 | Half Wave(λ/2) |
| LOWPAZ-15Q-633 | 15.00 | 632.8 | Quarter Wave(λ/4) |
| LOWPAZ-20H-633 | 20.00 | 632.8 | Half Wave(λ/2) |
| LOWPAZ-20Q-633 | 20.00 | 632.8 | Quarter Wave(λ/4) |
| LOWPAZ-25.4H-633 | 25.40 | 632.8 | Half Wave(λ/2) |
| LOWPAZ-25.4Q-633 | 25.40 | 632.8 | Quarter Wave(λ/4) |
| LOWPAZ-30H-633 | 30.00 | 632.8 | Half Wave(λ/2) |
| LOWPAZ-30Q-633 | 30.00 | 632.8 | Quarter Wave(λ/4) |
| LOWPAZ-38.1H-633 | 38.10 | 632.8 | Half Wave(λ/2) |
| LOWPAZ-38.1Q-633 | 38.10 | 632.8 | Quarter Wave(λ/4) |
| LOWPAZ-12.7H-1064 | 12.70 | 1064 | Half Wave(λ/2) |
| LOWPAZ-12.7Q-1064 | 12.70 | 1064 | Quarter Wave(λ/4) |
| LOWPAZ-15H-1064 | 15.00 | 1064 | Half Wave(λ/2) |
| LOWPAZ-15Q-1064 | 15.00 | 1064 | Quarter Wave(λ/4) |
| LOWPAZ-20H-1064 | 20.00 | 1064 | Half Wave(λ/2) |
| LOWPAZ-20Q-1064 | 20.00 | 1064 | Quarter Wave(λ/4) |
| LOWPAZ-25.4H-1064 | 25.40 | 1064 | Half Wave(λ/2) |
| LOWPAZ-25.4H-1064 | 25.40 | 1064 | Quarter Wave(λ/4) |
| LOWPAZ-30H-633 | 30.00 | 1064 | Half Wave(λ/2) |
| LOWPAZ-30H-633 | 30.00 | 1064 | Quarter Wave(λ/4) |
| LOWPAZ-38.1H-532 | 38.10 | 1064 | Half Wave(λ/2) |
| LOWPAZ-38.1H-532 | 38.10 | 1064 | Quarter Wave(λ/4) |
