Now we have some finished large aperture rods in stock.
Diameter: 51mm,46mm,40mm,36mm,27mm,20mm,15mm,12.7mm,10mm,6mm,5mm.

1. MR3-2 material
Verdet Constant: -0.329min/Oe*cm or -96rad/T*m at 632.8 nm
Verdet Constant: -0.108 min/Oe*cm or -31.4 rad/T*m at 1064 nm

* Absorption coefficient: < 0.003 per cm
* Maximum inclusion size: < 0.040 mm
* Maximum total inclusion cross section: < 0.08 mm*2 per 100 cm*3
* Verdet constant at 1064 nm: -0.108 min/Oe-cm
* Strain birefringence at 633nm: < 2 nm/cm
* Extinction ratio to perpendicular polarization: > 40 dB
* Bubbles,inclusions,cord,striae: None visible (Schlieren Method)
* Bulk laser damage threshold > 25 J/cm*2 (10ns pulse width at 1064 nm)

2. Optical Quality
* Flatness of two faces: Lambda/8 wavelength at 632.8 nm in 90% central area
* Surface of two faces:10-5 scratch/dig per standard of MIL-0-13830A,USA
* Two faces parallelism: < 30 seconds
* Edge chamfer: < 0.20mm x 45+/-5 degree
* Non optical surfaces fine ground:  < 30 micron

3. Coating upon requested
* Anti-reflection
* Wavelength: 1053nm and 1064nm
* Reflectivity per surface: R<0.20%
* Damage threshold: > 5J/cm*2, 10ns

Faraday Rotator Elements in Stock for 980nm and 1064nm optical isolators

Diameter 3.15+0.00/-0.05mm,length 11.00+0.00/-0.20mm

MR3-2 material, Verdet constant: -0.108min/Oe-cm at 1064nm

Optical Specifications
1. Absorption coefficient at 1064 nm: < 0.002 per cm
2. Max. inclusion size: < 0.040 mm
3. Max.total inclusion cross section: < 0.08 mm*2 per 100 cm*3
4. Surface quality: 10-5 S/D
5. Flatness: λ/ 10 at 633 nm
6. Parallelism: < 30 arc seconds
7. Extinction ratio to perpendicular polarization (stress birefringence): > 45dB
8. Clear aperture: 90 %
9. Edge chamfer: < 0.10mm X 45 degree
10. No coating, transmission: ≥ 86 % at 1064nm
11. Fine grind for other surfaces:   < 30 micron                                             
12. Bulk laser damage threshold: > 25 (J/cm2) 10ns, 1064 nm
13. AR/AR coating: R<0.20%
14. Laser damage threshold for caoting: > 5J/cm*2,10ns,1064nm

MR3-2 Faraday Rotator Element Specification

* Size from min. 0.90 mm to max.300 mm diameter,thickness max.50 mm.They are available to be made in a variety of forms including rods,slabs and disks

* Dimensional tolerance: +/- 0.05 mm for diameter
* Thickness tolerance: +/-0.10 mm for length
* Transitted wavefront: ≤ 1/8 Lambda at 633 nm
* Polishing and faces flat:  ≤ 1/8 wave at 633nm
* Clear aperture exceeds central 90% of dimension
* Surface quality: 20/10um scratch/dig or better(MIL-0-13830A,USA)
* Parallelism: End faces of  rotator rods are ground and polished < 30 arc seconds
* Perpendicularity: < 0.5 degree 
* Chamfer: 0.10-0.30 mm at 45 +/- 5 degree
* Fine grind for rod body
* Transparence (uncoated) T% ≥ 86%
* Anti-Reflection Coatings for two sides. T% ≥ 99% 
* Pulsed Damage Threshold:>25 J/cm*2 ,10ns,1064 nm

Advantages
* Magneto Optical Glass,the diameter from 1.00 mm to 300mm, other size and special shape can be provided.

* Magneto Optical Glass is widely used in Faraday Rotator,Optical Isolator and many kinds of sensors,polarimeters and instruments with higher sensitivity and stability

Type MR1 Diamagnetic Faraday Rotator Glass

Verdet constant=0.072-0.093min/Oe.cm at 632.8nm
Nd=1.92306
Nf=1.93838

Dispersive coefficient=21.26

Strain Birefringence <= 2 nm/cm at 632.8nm

In general,the Faraday Rotator Glass meeting the following specification
1.Maximum inclusion size <0.040mm
2.Maximum total inclusion cross section <0.04 mm2 per 100 cm3.
3.Two end sides:fine polished
4.Bulk laser damage threshold > 1GW/s.q.cm.(20 nsec. pulse at 1064nm)

Advantages: Diamagnetic Faraday Rotator Glasses has a very important property which is independent of temperature and widely used in Magnet Optic Current Transform(MOCT) and many kinds of polarimeters and instruments with higher sensitivity and stability

In Stock
MR1 diamagnetic faraday rotator rod with the following characteristics
1. Diameter: 4.40+/-0.05mm
2. Length: 17.50+/-0.05mm
3. Flatness of two faces: < lambda/8 wavelength at 632.8 nm in 90% central area
4. Surface quality of two faces:10-5 scratch/dig per MIL-0-13830A,USA
5. Two faces parallelism: Less than 5 seconds
6. Edge chamfer: 0.1mm x 45+/-5 degree
7. Fine grind body of rod
8. Stress birefringence(extinction ratio): > 45 dB (By special annealed)
9. Coating: Anti-reflective coating ( transparence): > 99% in wavelength of 620-690 nm
10. Coating curve attached