ULTRA Series Thin-Film Mirrors

High-Performance thin-film mirrors. The ULTRA Series mirrors can be custom designed to meet these challenging specifications. Check our website for info.

High-performance thin-film mirrors

ULTRA Series thin-film mirror with broadband reflection from the UV to the IR.

Figure 1. ULTRA Series thin-film mirror with broadband reflection from the UV to the IR.

Alluxa’s ULTRA Series of thin-film mirrors provide close to 100% reflection over a broad or precise range of wavelengths. They are resistant to laser damage and will boost the performance of instruments used in a variety of applications by preserving light source intensity.

Depending on the wavelength ranges and requirements of your system, ULTRA Series mirrors can be custom designed to meet one or more of the following challenging specifications:

  • Up to 99.5% reflection
  • Up to 99% transmission
  • Wavelength coverage from the UV to the mid IR (~250 nm to 6.2 µm)
  • 10/5 Surface quality

Ultra-flat thin-film mirrors for imaging and laser applications

All ULTRA Series thin-film mirrors can be custom specified to be ultra-flat in order to minimize distortion and maintain optimal performance in imaging and laser-based fluorescence systems. Integrating ultra-flat mirrors into these systems will result in crisp images, minimal focal shift, and accurate quantification of target molecules. Ultra-flat mirrors can be custom specified with better than 0.1 wave PV / inch flatness when measured at 632.8 nm.

GDD controlled thin-film mirrors for use with femtosecond lasers

Low dispersion thin-film mirror with GDD less than ± 45 fs^2 across a broad reflection range.

Figure 2. Low dispersion thin-film mirror with GDD less than ± 45 fs2 across a broad reflection range.

ULTRA Series thin film-mirrors can also be specified to control group delay dispersion (GDD). Controlling GDD is necessary when reflective optical components are integrated into instruments that utilize femtosecond lasers. When a femtosecond laser is reflected off of GDD controlled mirrors, the laser pulse intensity is preserved and dispersion is minimized, resulting in bright, crisp images with negligible distortion. This is essential for many non-linear optical (NLO) applications such as multiphoton fluorescence microscopy (MP), second and third harmonic generation microscopy (SHG and THG, respectively), and two-photon excitation stimulated emission depletion fluorescence microscopy (2PE-STED).

Because they are used with ultra-short pulsed lasers, GDD controlled mirrors are also specified with a high laser damage threshold which ensures that they will maintain optimal performance over a long period of time.

Quality and consistency from an innovative thin-film coating process

All of Alluxa's thin-film filters are hard-coated using our SIRRUS™ plasma deposition process on equipment that was designed and built by our team. This allows us to reliably and repeatedly produce the same high-performance thin-film mirrors over several different coating runs, which translates to consistent performance across all of your systems.

Please contact us for a custom quote or visit our online optical filter catalog to see our selection of ULTRA Series mirrors that are currently in stock.

Request a Filter Quote

  1. Name & Company:*
    Please let us know your name.
  2. Email:
    Please give us a way to contact you.
  3. Phone:
    Invalid Input
  4. How did you hear about us?
    Invalid Input
  5. Filter Description:
    Please at least include a short message.
  6. Invalid Input

  7. or contact us by phone:


Alluxa, The Highest Performing Thin Film Coating Process