UV Partial Reflection (PAR)
193 nm ≤ λ ≤ 400 nm
Partial Reflection coatings are widely used for beamsplitting, beam sampling and laser output coupling. They divide an incident, monochromatic beam into reflected and transmitted components with the specified intensity ratio. The Excimer laser coatings are able to withstand the corrosive properties of Excimer gases, thus are well suited for intracavity applications. These all dielectric coatings are sensitive to polarization, wavelength and angle of incidence. They are durable and highly resistant to laser damage.
RMI STANDARD SPECIFICATIONS
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| Angle of Incidence: |
0º or 45º |
Reflectance:
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R < 90% ± 3%
R = 90% – 95% ± 2%
R = 96% – 98% ± 1%
R > 98% ± 0.5% |
| Damage Threshold: |
3 J/cm2, 10 ns pulse |
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UV partial reflection performance example with 50% reflection at 355 nm. The curve represents a general shape for this coating. RMI will design a custom coating for your application. Please call (303) 664-5000 to discuss your coating requirements.
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