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| Information |
| Name： | Faraday rotator glass |
| Categories： | Crystals >> Optical Crystals |
| Model： | |
| Specifications： | |
| Brand： | |
| Product Code： | |
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| Price： | |
| Clicks： | 83 |
| Date： | 2010-05-20 13:01:43 |
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Faraday rotator glass has been used for magneto-optical isolator, switch, modulator and sensor. Faraday rotator glasses have been developed by LLG.
TG20 is a high Verdet constant glass in common uses.
TGP20 is characterized by a high Verdet constant and a lower nonlinear refractive index n2to avoid self-focusing in high power laser system.
The properties of Faraday rotator glasses
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TG20
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TGL20
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Verdet constant V (min/Oe.cm)
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632.8nm
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-0.258
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-0.149
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1064nm
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-0.075
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-0.05
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Refractive Index nd
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1.6888
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1.5588
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Abbe Number
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53.14
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62.92
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Nonlinear refractive index (10-13 e.s.u.)
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2.46
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1.34
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Thermal coefficient of refractive index (10-7/℃)
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74
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6.9
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Thermal coefficient of optical path (10-7/℃)
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105
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46
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Transmission window (nm)
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520-1400
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520-1400
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Coefficient of thermal expansion (10-7/℃)
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51.3
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70
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Transition temperature (℃)
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760
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566
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Sag temperature (℃)
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800
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596
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Density (g/cm3)
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4.32
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3.32
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Young’s modulus GPa
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108
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65.2
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Poisson’s ratio
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0.22
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0.24
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Knoop hardness (Kgf/cm2)
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760
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515
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Chemical durability
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Excellent
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Excellent
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