LightMachinery resonator optics are available to provide low divergence for applications requiring long distance propagation of the beam or the highest focussability.
A significant improvement to spatial coherence is also obtained, which is beneficial in some applications involving the use of diffractive optics (e.g. FBG writing, DOE hole drilling).
The beam is flat topped in both axes, with no occlusions, for divergence of <300 microradians
The LightMachinery staff have been world leaders in excimer lasers for over 25 years and we will continue to lead the way with improvements and refinements to excimer laser technology.
Low Divergence Performance
Beam profile at the focal plane of a one meter lens. Beam divergence is approximately 230 micro-radians FWHM in both axes.
Interference pattern generated from a pair of slits seperated by 0.3mm demonstrating the spatial coherence of the unstable resonator configuration.
Fringe Visibility (FV)
FV = Peak Intensity - Base intensity
Peak Intensity + Base Intensity
Fringe visibility versus beam displacement using a shearing interferometer.
10 mm x 24 mm beam size at FWHM.
Divergence less than 300 microradians.
70% of stable resonator power in near field.
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