Beam Splitter Prism
PRODUCT CATEGORIES
INOUIRY
Borisu’s beam splitters are divided into ordinary beam splitters, polarizing beam splitters, high power polarizing beam splitters, and depolarizing beam splitters.
Cubic Ordinary Beamsplitter
A cubic beam splitter is formed by coating the inclined surface of a right-angle prism with a film and then gluing a similar right-angle prism.
Compared with a beam splitter plate, the reflected and transmitted light of a beam splitter are of equal optical path. When transmitting light, the beam splitter is not affected by light deviation, and there will be no problems with beam translation, ghost images, and interference. Ordinary beam splitters are usually used for energy splitting in situations where the polarization state is insensitive. Since the beam splitter film uses a full dielectric film layer, there is basically no problem of light energy absorption.
It should be noted that since this beam splitter film itself has a polarization effect, the output light is partially polarized. If you want to avoid the influence of polarization sensitivity, it is recommended to use a polarization beam splitter or a depolarization beam splitter.
| Material | Fine annealed H-K9L optical glass |
|---|---|
| Irregular surface | <λ/4@632.8m |
| Dimension error | +-0.2mm |
| Clear aperture | 80% |
| Transmitted light offset | +-5′ |
| Reflected light offset | Clear aperture |
| Clear aperture | 90°+-5′ |
| Surface quality | 60-40 |
| Bevel | Protective chamfered edge |
| Caoting | Beveled surface splitter coating, other right angle surfaces broadband anti-reflection |
| Split Ratio | R/T +-10% average value within nominal bandwidth |
VIS Coated@400-700nm
NIR Coated@700-1100nm
SWIR Coated@1100-1600nm
Cubic Ordinary Beamsplitter Inventory Parameters
| Size (N³) | Split ratio (%) | Coating |
|---|---|---|
| 5 | 30R/7OT; 50R/50T; 70R/30T | VIS; NIR; SWIR |
| 10 | 30R/7OT; 50R/50T; 70R/30T | VIS; NIR; SWIR |
| 12.5/12.7 | 30R/7OT; 50R/50T; 70R/30T | VIS; NIR; SWIR |
| 15 | 30R/7OT; 50R/50T; 70R/30T | VIS; NIR; SWIR |
| 20 | 30R/7OT; 50R/50T; 70R/30T | VIS; NIR; SWIR |
| 25/25.4 | 30R/7OT; 50R/50T; 70R/30T | VIS; NIR; SWIR |
| 50/50.8 | 30R/7OT; 50R/50T; 70R/30T | VIS; NIR; SWIR |
Polarization Beam Splitter
Polarization beam splitter prism, when the incident angle meets the Brewster angle condition, the reflectivity of polarized light P is 0, and the film layer is controlled so that the reflectivity of polarized light S is close to 1, and the transmittance of polarized light P is close to 1. When the light beam is incident on the film layer in the air, it is not easy to reach the Brewster angle condition because the refractive index of air is relatively small, so the film layer must be sealed in the cemented prism.
Compared with the beam splitter plate, the reflected and transmitted light of the beam splitter prism are equal optical path. When transmitting light, the beam splitter prism is not affected by the deviation of light, and there will be no problems of beam translation, ghost image and interference. Used for beam splitting and imaging. No long-term calibration is required when the incident angle is 45°. The P component of the incident light is completely transmitted, while the S component of the incident light is reflected in a vertical direction of 90°.
| Material | K9 or ZF glass |
|---|---|
| Dimension tolerance | ±0.2mm |
| Aperture | >90% |
| Transmittance parameters | Single wavelength: Tp>95%, Ts90%, Ts<1% |
| Surface quality | 60/40 |
| Surface irregularity | <λ/4 every 25mm@632.8nm |
| Beam deviation | <3 minutes |
| Extinction ratio | Single wavelength>1000:1, Broadband>100:1/>1000:1 |
| Reflection parameters | Single wavelength: Rs>99%, Rp99%, Rp<10% |
| Damage threshold | >500 mJ/cm2, 20 ns, 20 Hz, @1064 nm |
| Coating | PBS coating on the bonding surface, anti-reflection coating on all right-angle surfaces |
VIS@420-680nm
NIR@620-1000nm
SWIR1@900-1300nm
SWIR2@1200-1600nm
High Extinction Ratio Polarization Beam Splitter Prism
| Size (N³) | Coating |
|---|---|
| 5 | VIS; NIR; SWIR1; SWIR2 |
| 10 | VIS; NIR; SWIR1; SWIR2 |
| 12.7 | VIS; NIR; SWIR1; SWIR2 |
| 15 | VIS; NIR; SWIR1; SWIR2 |
| 20 | VIS; NIR; SWIR1; SWIR2 |
| 25.4 | VIS; NIR; SWIR1; SWIR2 |
| 50 | VIS; NIR; SWIR1; SWIR2 |
High Power Polarization Beamsplitter
High-power polarizing cubic beam splitter is formed by coating the inclined surface of a right-angle prism with a film and gluing a similar right-angle prism.
Compared with the beam splitter plate, the reflected and transmitted light of the beam splitter are equal in optical path, and there is no problem of beam translation, ghost image and interference. It is used for beam splitting and imaging. No long-term calibration is required when the incident light is at a 45° angle. The P component of the incident light is completely transmitted, while the S component of the incident light is reflected at a vertical 90° direction.
Mainly used to separate S polarization and P polarization
No glue in the optical path
High extinction ratio
High damage threshold
RoHS compliant
| Material | UV fused quartz |
|---|---|
| Dimensional tolerance | ±0.2 mm |
| Aperture | >90% |
| Surface quality | 40/20 |
| Surface accuracy | <λ/8@632.8nm |
| Beam deviation | <3 minutes |
| Extinction ratio | Tp/Ts>2000:1 |
| Transmission parameters | Tp>95%, Ts<0.1% |
| Reflection parameters | Rs>99.9%, Rp<5% |
| Damage threshold | >5 J/cm2, 20 ns, 20 Hz, @1064 nm |
| Coating | PBS coating on the optical resin surface, anti-reflection coating on all right-angle surfaces |
266nm
355nm
532nm
1064nm
High Power Polarization Beamsplitter Prisms Stock Parameters
| Wavelength (nm) | Extinction ratio Tp/Ts | Size (mm) |
|---|---|---|
| 266 | ＞2000:1 | 12.7³mm; 20³mm; 25.4³mm |
| 355 | ＞2000:1 | 12.7³mm; 20³mm; 25.4³mm |
| 532 | ＞2000:1 | 12.7³mm; 20³mm; 25.4³mm |
| 1064 | ＞2000:1 | 12.7³mm; 20³mm; 25.4³mm |
Depolarizing Beamsplitter
The depolarizing beam splitter is different from the energy beam splitter. The depolarizing beam splitter splits the incident light into a transmitted beam and a reflected beam according to the calibrated splitting ratio without changing the polarization state of the incident light, and achieves the depolarization effect through the dielectric beam splitter film on the inclined surface.
Compared with the beam splitter plate, the reflected and transmitted light of the beam splitter prism are equal optical path. When transmitting light, the beam splitter prism is not affected by the light deviation, and there will be no beam translation, ghost image and interference.
It should be noted that the depolarizing beam splitter uses a metal-induced beam splitter film, so the outgoing light maintains the same polarization state as the incident light. Therefore, there is a certain absorption of the incident light (usually <10%), and it is recommended not to use it in a strong laser energy environment.
| Irregular surface accuracy | <λ/4@632.8nm |
|---|---|
| Dimension tolerance | ±0.2 mm |
| Beam deviation | <3min |
| Clear aperture | >90% |
| Chamfer | Protectiveness <0.5mmx45° |
| Surface quality | 60/40 |
| Absorption | <10% |
| Transmittance | 45%±5% |
| Residual polarization degree | <6% |
| Damage threshold | >100 mJ/cm2, 20 ns, 20 Hz, @1064nm |
| Coating | Depolarizing beam splitter coating on the bevel, anti-reflection coating on all exit and incident surfaces |
50R/50T VIS@400-700nm
50R/50T NIR@700-1100nm
50R/50T NIR1@650-900nm
50R/50T NIR2@900-1200nm
50R/50T SWIR@1200-1600nm
30R/70T NIR@700-1100nm
30R/70T SWIR@1100-1600nm
70R/30T NIR@700-1100nm
90R/10T SWIR@1100-1600nm
Depolarizing Beamsplitter Prisms Stock Parameters
| Size (N³) | Split ratio (%) | Coating |
|---|---|---|
| 5 | 30R/7OT; 50R/50T; 70R/30T; 90r/10T | VIS; NIR; SWIR |
| 10 | 30R/7OT; 50R/50T; 70R/30T; 90r/10T | VIS; NIR; SWIR |
| 12.7 | 30R/7OT; 50R/50T; 70R/30T; 90r/10T | VIS; NIR; SWIR |
| 15 | 30R/7OT; 50R/50T; 70R/30T; 90r/10T | VIS; NIR; SWIR |
| 20 | 30R/7OT; 50R/50T; 70R/30T; 90r/10T | VIS; NIR; SWIR |
| 25.4 | 30R/7OT; 50R/50T; 70R/30T; 90r/10T | VIS; NIR; SWIR |
| 50.8 | 30R/7OT; 50R/50T; 70R/30T; 90r/10T | VIS; NIR; SWIR |
We have some spot beamsplitters, and we also accept custom orders. If you are interested, please contact our sales team:
info@borisuns.com
