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Beam sampler for ultrashort pulses

In beam inspection applications, when the beam is split or sampled by Fresnel reflection, a 3 mm thick ultrafast laser beam sampler can be used to minimize pulse dispersion. The N-BK7 substrate is uncoated on the front surface in order to achieve beam splitting by Fresnel reflection. The rear surface is coated with an anti-reflection film to prevent ghosting. A slight wedge in the substrate almost eliminates the internal striations.

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Technical Data

Substrate as thin as 3mm minimizes pulse dispersion

Fresnel reflectivity in the range of 1-10% at 45 °

Uncoated front surface for beam sampling

Back surface coated with antireflection coating

Class A N-BK7 substrate

超短脉冲的光束采样器

超短脉冲的光束采样器

Beam sampler for ultrashort pulses

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