Measurement of the third harmonic energy of a large- aperture high power laser
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Received Date:
2013-11-08
Accepted Date:
2013-12-03
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Abstract
In order to measure energy of the third harmonic (TH) of a large aperture high power laser experiment platform, with a concave mirror sampling the beam, with a novel absorbing glass element filtering the beam, the influence of the absorbing glass element on the measurement result was experimentally tested. According to the data analysis, by using such a novel absorbing glass element, pure TH laser can be obtained and the influence of the residual fundamental and the second harmonic light is about 0.4%. The uncertainty of energy measurement of the entire TH laser energy can be controlled within 5%, which guarantees the reliability of energy measurement for the laser facility.
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