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T-UM05-45C - Ø1/2" Low GDD Ultrafast Mirror, 1400 nm - 1700 nm, 45° AOI

Fosco Connect Part No.: T-UM05-45C

  • $ 278.00 or



T-UM05-45C - Ø1/2" Low GDD Ultrafast Mirror, 1400 nm - 1700 nm, 45° AOI

Product Drawing

  • 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
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