T-UM05-45C - Ø1/2" Low GDD Ultrafast Mirror, 1400 nm - 1700 nm, 45° AOI
T-UM05-45C - Ø1/2" Low GDD Ultrafast Mirror, 1400 nm - 1700 nm, 45° AOI
- Low Group Delay Dispersion: |GDD| < 30 fs2
- Ideal for Pulses Shorter than 250 fs
- Reflectance Greater than 99%
- Ø1/2" and Ø1.00" Mirrors Available
- Polished Back Surface
- Surface Quality: 15-5 Scratch-Dig
Low Group Delay Dispersion (GDD) Mirrors incorporate a coating offering high reflectance in the 1400 nm - 1700 nm wavelength range and are meant to be used at a 45° angle of incidence. These ultrafast mirrors are designed for use with erbium lasers (1530 - 1620 nm); however, the operating wavelength range also covers many of the major telecom bands, including E (1360 - 1460 nm), S (1460 - 1530 nm), C (1530 - 1565 nm), L (1565 - 1625 nm), and U (1625 - 1675 nm). These mirrors are ideal for applications where pulse broadening is a concern. They offer an ideal combination of greater than 99% reflectance and less than |30 fs2| GDD; for details
These low GDD mirrors are available with either a 1/2" or 1.00" diameter. The edge of each optic is engraved with the item number and an arrowhead pointing to the coated surface. The back surface of these mirrors is polished so that the small percentage of light that leaks through the reflective coating may be used for applications such as power monitoring.
In addition to the low GDD mirrors here, We also offers Low GDD Mirrors for various other wavelength ranges.
| Item # | T-UM05-45C |
|---|---|
| Design Wavelength Range | 1400 - 1700 nm |
| Diameter | 1/2" (12.7 mm) |
| Diameter Tolerance | +0.00 / -0.10 mm |
| Thickness | 6.4 mm (0.25") |
| Thickness Tolerance | ±0.20 mm |
| Clear Aperture | >80% of Diameter |
| Reflectance | Rs > 99% (1400 - 1700 nm) Rp > 99% (1500 - 1600 nm) |
| Angle of Incidence | 45° |
| Group Delay Dispersion | |GDDs| < 30 fs² (1400 - 1700 nm) |GDDp| < 30 fs² (1500 - 1600 nm) |
| Substrate | Fused Silica |
| Front Surface Flatness | λ/4 at 632.8 nm Over Clear Aperture |
| Front Surface Quality | 15-5 Scratch-Dig |
| Parallelism | ≤3 arcmin |
| Back Surface | Polished |