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Free Space Isolators
Product description：
Free space isolators are divided into two categories: polarization dependent isolator and polarization independent isolator.
The polarization dependent isolator, or Faraday isolator consists of three major parts which are input polarizer (polarized vertically),Faraday Rotator, and output polarizer (aligned at 45° relative to the input polarizer).
The polarization independent isolator consists of three main components, which are birefringent beam displacer (polarizer), Faraday Rotator, half-wave plate. It's usually used for maintaining the stability of optical system effectively in fiber laser system.
CASTECH adopts high quality megneto-optic crystals with low absorption and high extinction ratios, and polarizers with low transmission losses to achieve outstanding performance. Customized free space isolators are available with peak isolation up to 45dB, maximum transmission above 95%, and aperture up to 45mm.
Applications：
● Laser precision machining
● Laser sensing system
● Ultrafast laser system
● OCT system
● Laser detection etc
Polarization Reference:
● All Free Space Isolators non-reciprocally rotates the plane of polarized light in 45°；
● Extra half-wave plate for modifying output polarization is available on request.
Beam selection of polarization-dependent isolators:
● Forward propagating beam Pi
● Reverse propagating beam Pr
Products
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Free Space Isolators
- CASTECH offers polarization dependent isolator and polarization independent isolator with high extinction ratios, low absorption and polarizers with low transmission losses.
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Product description：
Free space isolators are divided into two categories: polarization dependent isolator and polarization independent isolator.
The polarization dependent isolator, or Faraday isolator consists of three major parts which are input polarizer (polarized vertically),Faraday Rotator, and output polarizer (aligned at 45° relative to the input polarizer).
The polarization independent isolator consists of three main components, which are birefringent beam displacer (polarizer), Faraday Rotator, half-wave plate. It's usually used for maintaining the stability of optical system effectively in fiber laser system.
CASTECH adopts high quality megneto-optic crystals with low absorption and high extinction ratios, and polarizers with low transmission losses to achieve outstanding performance. Customized free space isolators are available with peak isolation up to 45dB, maximum transmission above 95%, and aperture up to 45mm.
Applications：
● Laser precision machining
● Laser sensing system
● Ultrafast laser system
● OCT system
● Laser detection etc
Polarization Reference:
● All Free Space Isolators non-reciprocally rotates the plane of polarized light in 45°；
● Extra half-wave plate for modifying output polarization is available on request.
Beam selection of polarization-dependent isolators:
● Forward propagating beam Pi
● Reverse propagating beam Pr
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Polarization-Dependent Type Model Number：HPISO-t-p-a-λ-w-h |
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Type(t) |
Power(p) |
Aperture(a) |
Wavelength(λ) |
Waveplate(w) |
Housing(h) |
|
FS (Free Space) DS (Dual Stage) AB (Adjustable bandwidth) |
1 W 5 W 30 W 50 W 100 W 500 W** ... |
2 mm 3 mm 4 mm 5 mm 8 mm 10 mm 12 mm 15 mm 25 mm 45 mm ... |
550-880nm* 355 nm 405 nm 532 nm 633 nm 780 nm 850 nm 980 nm 1030 nm 1064 nm 1319 nm 1550 nm 2000 nm 4500 nm ... |
C (Contained) N (Not Contained) |
A03* A04 A06 A08 A23 A31 ... |
*Only applicable to types with adjustable bandwidth
**500W is only suitable for the wavelength of 1030/1064nm
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Typical Specifications |
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Aperture |
Damage Threshold |
Withstand Power |
Transmittance |
Peak Isolation |
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2~15 mm |
3J/cm² at 10ns @(532~980)nm |
50 W |
＞93%*, ＞90%** |
>33 dB*, >45 dB** |
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2~10 mm |
10J/cm² at 10ns @(1319~2000)nm |
50 W |
＞93% |
>33 dB |
|
15~25 mm |
10J/cm² at 10ns @1030/1064nm |
500W |
＞93% |
>33 dB |
Operating temperature range: 10℃-30℃.
* Only applicable to conventional isolator
**Only applicable to dual-stage isolator
Housing dimensions(mm)：
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Polarization-Independent Type Model Number：HPISO-t-p-a-λ-w-h |
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Type(t) |
Power(p) |
Aperture(a) |
Wavelength(λ) |
Wave Plate(w) |
Housing(h) |
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PI (polarization-independent) |
50 W 100 W 500 W 1000 W ... |
1.5 mm 5 mm 8 mm ... |
980 nm 1030 nm 1064 nm ... |
C (Contained) N (Not Contained) |
A16 A29 A38 A41 ... |
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Typical Specifications |
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|
Aperture |
Damage Threshold |
Withstand Power |
Transmittance |
Peak Isolation |
|
1.5 mm |
10J/cm² at 10ns @(980~1064)nm |
50 W |
＞93% |
>33 dB |
|
5 mm |
10J/cm² at 10ns @(980~1064)nm |
100 W |
＞93% |
>33 dB |
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8 mm |
10J/cm² at 10ns @(980~1064)nm |
1000 W |
＞93% |
>33 dB |
Operating temperature range: 10℃-30℃.
Housing dimensions(mm)：
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