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Super Broadband Ultrafast Turning Mirrors
Super Broadband Ultrafast Turning Mirrors
Newport's super broadband turning mirrors reflect over 99.6% over the extremely wide range of 670-1340 nm. They have very low, slightly negative Group Delay Dispersion (GDD) and low third order dispersion. Designed to steer ultrashort pulses at 45° AOI with minimal effect on pulse distortion, these mirrors are ideal for use with Spectra-Physics ultrafast lasers such as the InSight® X3™.
- Low GDD over superbroad bandwidth
- R>99.6% @ 670-1340 nm for P- and S- polarization
- Optimized for 45° AOI for beam steering
- Polished back surface allows transmission at other wavelengths See All Features
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
 | 10Q20UF.55PBroadband Turning Mirror, Ultrafast, 25.4 mm, P Pol, 670-1340 nm | In Stock | ||||
| 10Q20UF.55SBroadband Turning Mirror, Ultrafast, 25.4 mm, S Pol, 670-1340 nm | In Stock |
Specifications
| Models | | | |
|---|---|---|---|
| Wavelength Range | 670-1340 nm | 670-1340 nm | |
| Angle of Incidence | 45° | 45° | |
| Reflectivity | Rp>99.6% @ 670-1340 nm | Rs>99.7% @ 670-1340 nm | |
| Material | Fused Silica | Fused Silica | |
| Mirror Shape | Round | Round | |
| Surface Quality | 20-10 scratch-dig | 20-10 scratch-dig | |
| Surface Flatness | λ/10 at 632.8 nm | λ/10 at 632.8 nm | |
| Back Surface | Commercial Polished | Commercial Polished | |
| Thickness | 6.0 mm | 6.0 mm | |
| Thickness Tolerance | ±0.25 mm | ±0.25 mm | |
| Diameter | 25.4 mm | 25.4 mm | |
| Diameter Tolerance | +0/-0.13 mm | +0/-0.13 mm | |
| Wedge | < 10 arc min | < 10 arc min | |
| Clear Aperture | ≥ central 80% of diameter | ≥ central 80% of diameter | |
| Chamfers | 0.5-0.75 mm face width | 0.5-0.75 mm face width | |
| Chamfers Angle Tolerance | 45 ±15° | 45 ±15° | |
| Cleaning | See How to Clean Optics | See How to Clean Optics |
Features
Wide Spectral Bandwidth
Our Ultrafast Super Broadband Turning Mirrors are designed to steer beams at 45 degrees AOI with over 99.6% reflection across the extremely wide 670 to 1340 nm range. The back surface of the mirror is polished to enable transmission of visible wavelengths.
Minimal Effect on Pulse Dispersion
Ultrafast broadband turning mirrors have a slightly negative group delay dispersion from 670 to 1340 nm.
Theoretical GDD for UF.55 Coating
Slight Wedge to Suppress Interference Effects
Our ultrafast mirrors may be used as dichroic mirrors in pump probe laser applications. The mirrors have a 10 arc minute wedge angle to suppress interference fringes for the transmitted beam. Note that performance outside of the specified wavelength range cannot be guaranteed.
Two Photon Microscopy Applications
In two photon microscopy, biological samples are illuminated with focused ultrashort pulsed infrared lasers. At the focal point molecules may absorb two photons then fluoresce in the visible range. These incident pulses often span a very broad wavelength range. Intensity of the fluorescence signal depends strongly on laser pulse width and peak power. Our mirrors allow redirection of Ti Sapphire beams for all possible wavelength ranges with minimal power loss and pulse broadening for optimal system efficiency.
Fused Silica Substrates
Fused Silica is synthetic amorphous silicon dioxide of extremely high purity. This non-crystalline, colorless silica glass combines a low content of inclusions with high refractive index homogeneity, a very low thermal expansion coefficient, and excellent transmittance in the wavelength regime from UV to NIR. As a result, these mirrors will perform better with temperature fluctuations and is ideal for high-energy laser applications due to its high energy damage threshold. For more information, please see our Optical Materials technical note.
Resources
Selection Guides
Technical Notes
Literature
Ultrafast Laser Optics-White Paper(477.2 kB, PDF)
