For an illumination optical system and a simple experiment, it is not requested the low-scratch polishing for a laser. Reflectance and surface flatness is the same as aluminum mirrors (TFA) for a laser.
| Material | BK7 |
| Coating | Al + MgF2 |
| Parallelism | <3′ |
| Incident angle | 45° |
| Laser Damage Threshold | 0.25J/cm² |
| Surface Quality (Scratch-Dig) | 60-40 |
| Clear aperture | 90% of actual aperture or circle or ellipse that contacts 90% square of dimension |
Circle
| Part Number | Diameter ØD [MM] | Thickness t [MM] | Surface flatness | Rear surface |
| S-TFA-10C03-10 | Ø10 | 3 | λ/10 | Ground |
| S-TFA-10C05-10 | Ø10 | 5 | λ/10 | Ground |
| S-TFA-15C03-10 | Ø15 | 3 | λ/10 | Ground |
| S-TFA-15C05-10 | Ø15 | 5 | λ/10 | Ground |
| S-TFA-20C03-10 | Ø20 | 3 | λ/10 | Ground |
| S-TFA-20C05-10 | Ø20 | 5 | λ/10 | Ground |
| S-TFA-25C03-1 | Ø25 | 5 | λ | Polished |
| S-TFA-25C05-10 | Ø25 | 5 | λ/10 | Polished |
| S-TFA-30C05-1 | Ø30 | 5 | λ | Polished |
| S-TFA-30C05-10 | Ø30 | 5 | λ/10 | Polished |
| S-TFA-40C06-1 | Ø40 | 6 | λ | Polished |
| S-TFA-40C06-10 | Ø40 | 6 | λ/10 | Polished |
| S-TFA-50C08-1 | Ø50 | 8 | λ | Polished |
| S-TFA-50C08-10 | Ø50 | 8 | λ/10 | Polished |
Square / Retangle
| Part Number | Diameter |