Thermal deformation of optical windows irradiated by high power laser beam
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1.
Institute of Fluid Physics, CAEP, Mianyang 621900, China;
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2.
Institute of Laser Physics and Chemistry, Sichuan University, Chengdu 610064, China
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Received Date:
2004-08-02
Accepted Date:
2004-09-13
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Abstract
Based on three dimensional transient heat conduction equation and elastic stress-strain equation,the temperature rise,distortion and equivalent stress distribution of white bijou window irradiated by high power annular beam(λ=(1.315)μm) are simulated using a three dimensional finite element model(FEM).The temperature rise,distortion and equivalent stress distribution of fluoride glass window induced by high power hollow rectangular laser beam(λ=3.8μm) are also simulated.Laser intensity spatial gradient and attenuation in window are considered in computational model.
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References
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