Optical Propagation Modeling for the National Ignition Facility.

Williams, W. H. ; Auerbach, J. M. ; Henesian, M. A. ; Jancaitis, K. S. ; Manes, K. R.

Technical Information Center Oak Ridge Tennessee

关键词: Wave forms;    Amplifiers;    Design;    Lasers;    Optics;   

RP-ID  :  DE200415007258

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Optical propagation modeling of the National Ignition Facility has been utilized extensively from conceptual design several years ago through to early operations today. In practice we routinely (for every shot) model beam propagation starting from the waveform generator through to the target. This includes the regenerative amplifier, the 4-pass rod amplifier, and the large slab amplifiers. Such models have been improved over time to include details such as distances between components, gain profiles in the laser slabs and rods, transient optical distortions due to the flashlamp heating of laser slabs, measured transmitted and reflected wavefronts for all large optics, the adaptive optic feedback loop, and the frequency converter. These calculations allow nearfield and farfield predictions in good agreement with measurements.