Thermal blooming compensation using coherent optical adaptive techniques (COAT)
- 1 May 1975
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 26 (9) , 539-543
- https://doi.org/10.1063/1.88248
Abstract
Real‐time compensation for thermally induced beam distortion has been demonstrated using a phase‐adaptive aperture subdivided into 18 elements coupled with an 18‐channel multidither servo system. The results were obtained using an argon ion laser and a nonlinear liquid cell placed in the near field of the transmitted beam. The system increased the peak beam irradiance by more than a factor of 4 at the highest power used and reduced the beamwidth by a factor of 5.4 from the uncorrected bloomed case. A comparison with predictions from existing theory is given.Keywords
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