Specifications:
| Type | Plano-plano dichroic mirror | Substrate Material | Fused Silica |
| Diameter | 25.4 (+0/-0.1)mm | Thickness | 3.0 (±0.2)mm |
| Clear Aperture | >90% | Parallelism | <1 arcsec |
| Wavelength | Reflection: 515nm Transmission: 620-2600nm | Coating | S1: R>99.9%@515nm / Tavg>99%@620-2600nm S2: R<1%@620-2600nm |
| Angle of Incidence | 45° | Group Delay Dispersion (GDD) | <20fs² |
| Surface Flatness | λ/10@633nm | Surface Quality (S/D) | 20/10 |
| Chamfer | 0.3mm×45° | Laser Induced Damage Threshold (LIDT) | >4J/cm2@1030nm, 200ps, 100Hz |
This is Shalom EO's 21211-002 ultrafast harmonic separator, featuring a reflection wavelength of 515nm and a transmission wavelength of 620-2600nm. The coating specification is S1: R>99.9%@515nm/Tavg>99%@620-2600nm; S2: R<1%@620-2600nm, with low group delay dispersion (GDD < 20 fs2), optimized for separating the harmonics of Ytterbium femtosecond lasers. The 21211-002 ultrafast beamsplitter module is made of high surface-quality fused silica, with a diameter of 25.4mm and a thickness of 3mm.
