| 磁旋光玻璃技术指标( Faraday Rotator Glas l index) |
| 技术指标 编号 | Tb-20 | Tb-23 | Tb-26 | |
| 费尔德（Verdet)常数V（Min/Oe.cm) | -0.076 | -0.066 | -0.096 | λ=1.06um |
| 折射率（n)Retractive Index(n) | 1.6998 | 1.7355 | 1.7464 | |
| 阿贝数Abbe-number | 52.4 | 51 | 50.07 | |
| 光吸收系数 l Absorption Coeflient | ≤0.004 | ≤0.004 | ≤0.004 | |
| 应力双折射Stroes Birefingence | 1a | 1a | 1a | |
| 光学均匀性 l Homogeneity | H1 | H1 | H1 | |
| 气泡度Bubble | A1 | A1 | A1 | |
| 条纹度Stria | A | A | A | |
| 激光诱导损伤阈值(LIDT) | >15J/cm² | >15J/cm² | >15J/cm² | λ=1.06um |