Ultra Broadband Dielectric / TFMS
Ultra Broadband Dielectric Mirrors are manufactured using all dielectric multi-layer coatings of alternating high and low index layers. These are specifically designed for use at 45 degrees angle of incidence. The mirrors are offered for use in applications where high-reflection over a broad wavelength range is required.
Common Specifications
| Material | BK7 |  |
|---|---|---|
| Coating | Dielectric Multi-layer Coating | |
| Incident Angle | 45°±3° | |
| Surface Flatness | λ/10 | |
| Parallelism | ＜3′ | |
| Surface Quality (Scratch-Dig) | 40-20 | |
| Clear Aperture | 90% of the diameter | |
| Rear Surface | Polished |
| Schematic | Outline Drawing |
|---|---|
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 |
| Part Number | Wavelength Range | Diameter φD |
Thickness t |
Reflectance | Laser Damage Threshold* |
|---|---|---|---|---|---|
| TFMS-25.4C05-2/4 | 245 － 400nm | φ25.4mm | 5mm | ＞Average 97% | 0.5J/cm2 |
| TFMS-30C05-2/4 | 245 － 400nm | φ30mm | 5mm | ＞Average 97% | 0.5J/cm2 |
| TFMS-25.4C05-2/7 | 245 － 700nm | φ25.4mm | 5mm | ＞Average 97% | 0.5J/cm2 |
| TFMS-30C05-2/7 | 245 － 700nm | φ30mm | 5mm | ＞Average 97% | 0.5J/cm2 |
| TFMS-25.4C05-4/11 | 400 － 1100nm | φ25.4mm | 5mm | ＞Average 98% | 0.5J/cm2 |
| TFMS-30C05-4/11 | 400 － 1100nm | φ30mm | 5mm | ＞Average 98% | 0.5J/cm2 |
| TFMS-50C08-4/11 | 400 － 1100nm | φ50mm | 8mm | ＞Average 98% | 0.5J/cm2 |
| TFMS-25.4C05-4/20 | 400 － 2000nm | φ25.4mm | 5mm | ＞Average 98% | 0.5J/cm2 |
| TFMS-30C05-4/20 | 400 － 2000nm | φ30mm | 5mm | ＞Average 98% | 0.5J/cm2 |
| TFMS-50C08-4/20 | 400 － 2000nm | φ50mm | 8mm | ＞Average 98% | 0.5J/cm2 |
| TFMS-25.4C05-3/20 | 300 － 2000nm | φ25.4mm | 5mm | ＞Average 97% | 0.5J/cm2 |
| TFMS-30C05-3/20 | 300 － 2000nm | φ30mm | 5mm | ＞Average 97% | 0.5J/cm2 |
| TFMS-50C08-3/20 | 300 － 2000nm | φ50mm | 8mm | ＞Average 97% | 0.5J/cm2 |
*Laser pulse width 10ns, wavelength 532nm, repetition frequency 20Hz
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