The front surface of the plate beamsplitters are coated with a beam splitting coating, and the rear surface is usually coated with AR coating to reduce the interference of beams and ghosting. The plate beamsplitters are lightweight and economical in price.
Note: This series is intended for unpolarized light splitting only. For intensity splitting of polarized light (partially polarized, linearly polarized, circularly polarized, elliptically polarized), use depolarizing beam-splitting prisms.
| Materia | H-K9L Optical Glass | Surface Accuracy | λ/ 2 (per inch)@633 nm |
| Parallelism | ＜ 1 arcmin | Surface Quality | 60-40 |
| Clear Aperture | 90% | Dimensions Tolerance | + 0.0/ -0.25 mm |
| Thickness | 3 mm ± 0.2 mm | Bevel | Protective Bevel 0.2~0.5 mm x 45° |
| Angle of Incidence (AOI) | 45° Design | Coating | S1 BS Coating: R/T ±10% (AVG of Designed Bandwidth) S2 AR Coating: Ravg＜1%(AVG of Designed Bandwidth) |
Model
| Size, mm | Wavelength, nm | R/T, S1 Coating | S2 Coating |
| Φ12.5 | 350~700, 700~1100, 900~1700 | (20%R/80%T) ± 10%,(30%R/70%T) ± 10%,(40%R/60%T) ± 10%,(50%R/50%T) ± 10%, (60%R/40%T) ± 10%, (70%R/30%T) ± 10%, (80%R/20%T) ± 10% | Ravg < 1%@350-700 nm, Ravg < 1%@700-1100 nm, Ravg < 1%@900-1700 nm |
| Φ25 | |||
| Φ50 | |||
| 12.5 × 17.5 | |||
| 25 × 36 | |||
| 50 x 72 |