Photonic Sourcing

1. Large aperture  Faraday Rotator Elements 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

2. Snall aperture 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

3. Faraday Rotators
Aperture as below and specified by the customer.

Diameter: 2.4mm,4.4mm,5.0mm,6.0mm,10mm,15mm,20mm,25mm,30mm,40mm
Working wavelength: 532nm,633nm,650nm,780nm,850nm,980nm,1064nm,1550nm

4. Optical Isolators

Polarization Dependent Free Space Isolator
1. Clear Aperture:8mm,6mm,4mm,2mm
2. Central wavelength: 1064nm
3. Working wavelength range: +/-5nm
4. Transmission:> 92% (25℃)
5. Rotation angle at specified wavelength:45+/-2 degree
6. Isolation at 25℃: > 30dB (25℃)
7. Insertion Loss: < 0.50dB
8. Input polarization （Degree): 0 degree
9. Output polarization（Degree): 45 degree
10.Operating Temperature: 20 ℃ to +30 ℃