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Ultrafast Laser Broadband 45° Mirrors

Ultrafast Laser Broadband 45° Mirrors
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Ultrafast Laser Broadband 45° Mirrors - 1

O p t i c s 613 Email: sales@newport.com • Web: newport.com WINDOWS BEAMSPLITTERS OPTICAL FILTERS POLARIZATION OPTICS DIFFRACTION GRATINGS HIGH-ENERGY OPTICS ULTRAFAST LASER OPTICS ACCESSORIES Ultrafast Laser Broadband 45° Mirrors • Minimum pulse dispersion • Rs >99% from 700–930 nm • Rp >99% from 730–870 nm • Laboratory tested to withstand up to 1 TW/cm2 with 100 fsec pulses at 5 Hz at 800 nm This mirror is ideal for use with ultrashort pulse lasers as a high reflectance beamsteering mirror at 45° angle of incidence. Careful thin film design and an advanced coating process results in a mirror with maximum reflectivity and bandwidth with minimum effect on pulse dispersion available in 12.7 mm, 25.4 mm, and a new 50.8 mm diameter size. Specifications Material BK 7, grade A, precision annealed optical glass Surface Flatness S1 ë/10 at 632.8 nm over the clear aperture Clear Aperture central 80% of diameter Surface Quality 15-5 scratch-dig Diameter Tolerance +0/-0.13 mm Thickness Tolerance ±0.38 mm Wedge 30 ±15 arc min Chamfers 12.7 & 25.4 mm: 0.25-0.76 mm face width x 45° ±15° 50.8 mm: 0.38-0.76 mm face width x 45° ±15° Angle of Incidence 45° ± 3° S1 Coating UF.25, Rs >99 %, 700–930 nm, Rp >99 %, 730–870 nm S2 Coating None Durability MIL-C-675C, moderate abrasion Cleaning Non-abrasive method, acetone or isopropyl alcohol on lens tissue recommended (see page 622) UF.25 Typical Reflectance (%) 100 98 96 94 92 90 650 700 45°P 45°S 750 Wavelength (nm) 800 850 900 950 GVD (fsec2) UF.25 Calculated GVD 100 75 50 25 0 -25 -50 -75 -100 700 750 800 Wavelength (nm) 850 900 45°S 45°P Cubic Term (fsec3) UF.25 Calculated Cubic Term 500 400 300 200 100 0 700 750 Wavelength (nm) 45°S 45°P 800 850 900 C 30 arc min Wedge S1 S2 ø B ø A Dimension (mm) Model øA øB C 05B20UF.25 12.7 10.2 9.53 10B20UF.25 25.4 20.3 6.10 20B20UF.25 50.8 40.6 9.40 Ordering Information Model Diameter (mm) Thickness (mm) 05B20UF.25 12.7 9.53 10B20UF.25 25.4 6.10 20B20UF.25 50.8 9.40 GVD and the Cubic Term Group velocity dispersion (GVD) and the cubic term of the phase expansion are shown for reference. True mirror performance can be affected by manufacturing tolerances and repeatability. Newport minimizes these effects with the use of state-of-the-art thin film production equipment and computer controlled processes. These mirrors have been successfully field tested at several university and industrial laboratories engaged in ultrafast studies and have been found to have high performance very closely matching these calculated curves. Laser Damage Our ultrafast laser 45° mirrors have been laboratory tested for laser damage. They were found to withstand up to 1 TW/cm2 with 100 fsec pulses at 5 Hz at 800 nm. SUPREMA® Series Optical Mounts page 637 ULTIMA® Series Optical Mounts page 652 Availability – Guaranteed on select items @ newport.com

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