Near Diffraction Limited Beam

BriteLight™ Lasers

Great care has been taken in the design of the BriteLight lasers to ensure that the output is close to diffraction limited even when operating at full power. Amplification of the carefully controlled output from the master oscillator is done first in a double pass pre-amplifier and secondly in a dual-head four pass power amplifier using only passive components. The use of multi-pass amplification in the two amplifiers stages allows for more efficient energy extraction which in turn allows for achieving the desired energy output level with proportionally less pump power as compared to single pass amplifiers.

When operating the laser at 75 W of average power and 250 mJ/pulse the beam divergence is better than 2x diffraction limit (DL) and at 125 W of average power (250 mJ/pulse) still better than 3.5x DL.

Master Oscillator
1 mJ, <1.1x D.L.

Pre-Amplifier
70 mJ, <1.3x D.L.

Near-field Mode
250 mJ, <2x D.L.

Far-field Mode
250 mJ, <2x D.L.

 

 

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