| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5363776 | Applied Surface Science | 2007 | 5 Pages |
Abstract
We report measurements of the laser induced breakdown threshold in lithium tantalate with different number of pulses delivered from a chirped pulse amplification Ti: sapphire system. The threshold fluences were determined from the relation between the diameter D2 of the ablated area and the laser fluence F0. The threshold of lithium tantalite under single-shot is found to be 1.84Â J/cm2, and the avalanche rate was determined to be 1.01Â cm2/J by calculation. We found that avalanche dominates the ablation process, while photoionization serves as a free electron provider.
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Authors
Yishuai Zhang, Xianfeng Chen, Hongyun Chen, Yuxing Xia,