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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

         

 

Keyword:
Free space isolator polarization independent optical
high extinction ratios
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 Polarization-Dependent Type Model Number:HPISO-t-p-a-λ-w-h

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

 

 

Typical Specifications

Aperture

Damage Threshold

Withstand Power

Transmittance

Peak Isolation

2~15 mm

3J/cm² at 10ns @(532~980)nm

50 W

>93%*, >90%**

>33 dB*, >45 dB**

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):

 

 


 

 

Polarization-Independent Type Model Number:HPISO-t-p-a-λ-w-h

Type(t)

Power(p)

Aperture(a)

Wavelength(λ)

Wave Plate(w)

Housing(h)

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

...

 

 

 

Typical Specifications

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

8 mm

10J/cm² at 10ns @(980~1064)nm

1000 W

>93%

>33 dB

Operating temperature range: 10℃-30℃.

 

 

Housing dimensions(mm):

Products

Free Space Isolators
Free Space Isolators
Free Space Isolators
Free Space Isolators
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2.2
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2.1
  • Free Space Isolators

  • CASTECH offers polarization dependent isolator and polarization independent isolator with high extinction ratios, low absorption and polarizers with low transmission losses.
Description
Parameters
CAS'TechClass
Download

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

         

 

 Polarization-Dependent Type Model Number:HPISO-t-p-a-λ-w-h

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

 

 

Typical Specifications

Aperture

Damage Threshold

Withstand Power

Transmittance

Peak Isolation

2~15 mm

3J/cm² at 10ns @(532~980)nm

50 W

>93%*, >90%**

>33 dB*, >45 dB**

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):

 

 


 

 

Polarization-Independent Type Model Number:HPISO-t-p-a-λ-w-h

Type(t)

Power(p)

Aperture(a)

Wavelength(λ)

Wave Plate(w)

Housing(h)

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

...

 

 

 

Typical Specifications

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

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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