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法拉第光隔离器
特点:
峰值隔离度>38 dB;>60 dB
透过率(1064 nm,800 nm)>90 %
宽带隔离器
可调谐隔离器
应用:
消除光反馈
放大器设计
法拉第隔离器(FI)是单向光学器件,一个方向上透过线偏光,阻挡反向光。通常由一个法拉第旋转器和两个偏振器组成。法拉第旋转器是磁光有源材料,放置在永磁体(Nd-Fe-B)中。提供二种磁光有源材料,掺铽玻璃,铽镓石榴石(TGG)晶体。
法拉第隔离器通过衰减反射光和背向散射光几个数量级(104至106)来保护激光器。也可以用于对光反馈极其敏感的仪器,光反馈可能会引起强度不稳定,频率牵引以及其它不稳定效应。
提供以下型号:
高透过率单级隔离器,隔离度38-44 dB,波长400-1250 nm(固定),带宽,30 nm,通光孔径2-15 mm。透过率>90 %。
宽带隔离器,隔离度>38 dB。中心波长-800 nm(可提供其它波长)。带宽-120 nm (>30dB)。通光孔径2-12 mm。提供高透和侧面逸出版本。
可调谐隔离器。峰值隔离度38-42 dB。中心波长-780 nm。调谐范围710至880 nm。可提供其它波长。操作简单方便。
带有侧面逸出(SE)的单级隔离器。隔离度38-44 dB,波长400至1250 nm(固定),宽-30 nm。通光孔径2-12 mm。
双级隔离器。隔离度>60 dB。波长600-1150 nm(固定)。带宽-30 nm。通光孔径2-12 mm。
Central wavelength, nm | Clear aperture, mm1) | Part number | Rod material | Peak Isolation, dB2) | Bandwidth(at >30 dB), nm | Tpeak, % | LxWxH (beam height), mm |
1250 nm | 5 mm | 5AFR-1250C | TGG | 38 dB | ±5 nm | 98% | 65x71x77 (42) |
5AFI-1250C | 90% | 90x71x77 (42) | |||||
1030...1070 nm,fixed | 2 mm | 2AFR-1064C | TGG | 38 dB | ±10 nm | 98% | 50x38x46 (26) |
2AFI-1064C | 90% | 78x38x46 (26) | |||||
4 mm | 4AFR-1064C | 38 dB | ±10 nm | 98% | 52x45x51 (28.5) | ||
4AFI-1064C | 90% | 85x45x51 (28.5) | |||||
6 mm | 6AFR-1064C | 38 dB | ±10 nm | 98% | 55x48x54 (30) | ||
6AFI-1064C | 90% | 92x48x54 (30) | |||||
8 mm | 8AFR-1064C | 38 dB | ±10 nm | 98% | 62x59x65 (35.5) | ||
8AFI-1064C | 90% | 100x59x65 (35.5) | |||||
10 mm | 10AFR-1064C | 38 dB | ±10 nm | 98% | 65x66x72 (39) | ||
10AFI-1064C | 90% | 110x66x72 (39) | |||||
12 mm | 12AFR-1064C | 38 dB | ±10 nm | 98% | 69x71x77 (41.5) | ||
12AFI-1064C | 90% | 120x71x77 (41.5) | |||||
1030 nm, broadband | 2 to 12 mm | (2-12)AFRB-1030C | TGG | 35 dB | 980-1070 nm | 98% | W, H same as fixed, L+8 mm |
(2-12)AFIB-1030C | 88% | ||||||
700...900 nm,fixed | 2 mm | 2AFR-800C, G | TGG (C) or Glass (G) | 38 dB | ±10 nm | 98% | 50x38x46 (26) |
2AFI-800C, G | 90% | 78x38x46 (26) | |||||
4 mm | 4AFR-800C, G | 38 dB | ±10 nm | 98% | 52x45x51 (28.5) | ||
4AFI-800C, G | 90% | 85x45x51 (28.5) | |||||
5 mm | 5AFR-800C, G | 38 dB | ±10 nm | 98% | 52x48x54 (30) | ||
5AFI-800C, G | 90% | 88x48x54 (30) | |||||
8 mm | 8AFR-800C, G | 38 dB | ±10 nm | 98% | 62x59x65 (35.5) | ||
8AFI-800C, G | 90% | 100x59x65 (35.5) | |||||
10 mm | 10AFR-800C, G | 38 dB | ±10 nm | 98% | 65x66x72 (39) | ||
10AFI-800C, G | 90% | 110x66x72 (39) | |||||
12 mm | 12AFR-800C, G | 38 dB | ±10 nm | 98% | 69x71x77 (41.5) | ||
12AFI-800C, G | 90% | 120x71x77 (41.5) | |||||
15 mm | 15AFR-800C, G | 38 dB | ±10 nm | 98% | 71x81x84 (46) | ||
15AFI-800C, G | 90% | 140x81x84 (46) | |||||
700-880 nm, broadband | 4 to 12 mm | (4-12)AFRB-800C, G | TGG (C) or Glass (G) | 35 dB | ±60 nm | 98% | W, H same as fixed, L+6 mm |
(4-12)AFIB-800C, G | 88% | ||||||
710-880 nm,tunable | 4 to 12 mm | (4-12)AFIТ-800C, G | TGG (C) or Glass (G) | 38 dB | ±10 nm (tunable) | 88% | W, H same as fixed, L+50 mm |
633 nm | 4 mm | 4AFR-633С | TGG | 38 dB | ±10 | 98% | 52x45x51 (28.5) |
4AFI-633С | 85% | 85x45x51 (28.5) | |||||
5 mm | 5AFR-633G | Glass | 38 dB | ±10 | 98% | 52x48x54 (30) | |
5AFI-633G | 85% | 90x48x54 (30) | |||||
532 nm | 2 mm | 2AFR-532С | TGG | 38 dB | ±10 | 97% | 30x38x46 (26) |
2AFI-532С | 85% | 75x38x46 (26) | |||||
5 mm | 5AFR-532С | 38 dB | ±10 | 97% | 30x48x54 (30) | ||
5AFI-532С | 85% | 90x48x54 (30) | |||||
8 mm | 8AFR-532С | 38 dB | ±10 | 97% | 42x59x65 (35.5) | ||
8AFI-532С | 85% | 100x59x65 (35.5) | |||||
10 mm | 10AFR-532С | 38 dB | ±10 | 97% | 45x66x72 (39) | ||
10AFI-532С | 85% | 110x66x72 (39) | |||||
400 nm | 4 mm | 4AFR-400С | TGG | 38 dB | ±5 | 85% | 30x45x51 (28.5) |
4AFI-400С | 75% | 60x45x51 (28.5) | |||||
6 mm | 6AFR-400С | 38 dB | ±5 | 85% | 30x48x54 (30) | ||
6AFI-400С | 75% | 70x48x54 (30) | |||||
Polarization-independent isolators: | |||||||
1064 nm | 1.53) mm | PI35C4) | TGG | 35 dB | ±5 | 90% | 120x48x52 (28) |
1064 nm | 1.53) mm | PI35C35) | TGG | 35 dB | ±5 | 90% | 80x32x32 |
1) typical apertures, other apertures are available upon request;2) >60 dB double-stage optical isolators are available upon request;3) input beam diameter at 1/e^2;4) the PI35CF model with fiber-input is available;5) small package. |
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