Ultrafast Coating
Melles Griot has developed a new coating, the /091, which is designed for ultrafast laser systems in the near-infrared. This all-dielectric coating centered at 800 nm, minimizes pulse broadening for ultrafast applications. The coating also offers exceptionally high reflectance for both s- and p-polarizations in the range from 750 nm to 870 nm. |
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Ultrafast coating /091 |
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The ultrafast coating is ideal for high-power Ti:sapphire laser applications. This coating is superior to protected and
enhanced metallic coatings because of its ability to handle higher powers. For lower power light sources, the protected
silver /038 coating is strongly recommended for ultrafast applications because of its low pulse-broadening effect, as
shown in the figure below. The dispersion (pulse broadening) effects were measured using an autocorrelation of laser
pulses with a four-mirror test line. |
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Dispersion characteristics of various coatings |
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Melles Griot offers the /091 coating standard on both a 12.5-mm- and a 25.0-mm-diameter ultraviolet synthetic fused-silica
substrate. |
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| Ultrafast Coating (/091) | ||||||
| Wavelength Range (nm) |
Minimum Reflectance Rp (%) |
Angle of Incidence (deg) |
Pulse Broadening (%) |
COATING SUFFIX |
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| 770-830 | 99.0 | 45 | <18.0 | /091 | ||
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| Optics Guide Copyright 2002 Melles Griot Inc. |