Polarization Beam Combiner is made of two pieces YVO4 prism. The calcite polarization combiner can be with 45° of two polarization beam input. Please refer to Gian Thompson Polarizing Beamsplitter Cube which is made of calcite can also work as polarization beam combiner. But since it is glue cemented, the damage threshold is lower. While we specially design the air spaced Polarization Beam Combiner which is made of YVO4. The Angle between two input polarization beam is 100.6 deg. All the input & output surfaces are optical polished and coated.
Features: Air Spaced High Damaged Threshold Broad Band for 500-4000nm |
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Item No :
PBCProduct Origin :
FuZhouSpecifications:
Material: | YVO4 |
Wavelength Range: | 500-4000nm |
Extinction Ratio: | <5x10-6 |
Surface Quality: | 20/10 |
Beam Deviation: | < 3 arc minutes |
Wavefornt Distortion: | λ/4@632.8nm |
Damage Threshold: | >500 MW/cm2 |
Coating: | Single MgF2 |
Mount: | Black Anodized Aluminium |
Standard Products
Part No. | Wavelength Range(nm) | Extinction Ratio | Separation Angle(°) | C.A. fa(mm) | O.D.fd(mm) | L ±0.1(mm) |
PBC9006 | 500-4000 | <5x10-6 | 9.8°-13.0° 10°@1550nm |
6.0 | 15.0 | 10.9 |
PBC9008 | 8.0 | 25.4 | 14.5 | |||
PBC9010 | 10.0 | 25.4 | 18.1 | |||
PBC9015 | 15.0 | 25.4 | 27.0 |
Technical Advantages of Broad Band Polarization Beam Combiner:
The broad band polarization beam combiner achieves efficient polarization beam combining across wide spectral ranges through birefringent crystal and multi-layer coating designs, with technical advantages including: ultra-wide spectral compatibility, covering a working band of 500-4000nm, and offering a polarization extinction ratio (PER) ≥25dB, which is compatible with multi-wavelength applications from visible to near-infrared (1310/1550nm dual communication wavelengths, 1064nm laser); low loss and high stability, featuring insertion loss <0.5dB, a fully solid-state cemented structure that supports wide-temperature operation from -10°C to 70°C with PER variation <3dB, and polarization crosstalk <0.8% under mechanical vibration; **high-power applicability**, with a laser damage threshold >5 J/cm² (1064nm, 10ns), capable of withstanding continuous and pulsed light loads. In fiber optic communication WDM systems, its dual-polarization beam combining capability increases single-fiber transmission capacity to over 100Gbps; in multi-wavelength laser processing systems, it can synchronously combine orthogonally polarized 1064nm and 532nm beams with spot coincidence accuracy of ±2μm, significantly enhancing processing efficiency and optical path integration.