Document Detail

Resonant effects in nonlinear photon absorption during femtosecond laser ablation of Nd-doped silicate glass.
MedLine Citation:
PMID:  23052083     Owner:  NLM     Status:  In-Data-Review    
This study investigates the resonant effects in nonlinear photon absorption in femtosecond laser ablation of Nd-doped silicate glass (Nd:glass). During the femtosecond laser ablation process, the resonant ablation threshold fluence is decreased by up to 40% compared with that of ordinary ablation. However, it is found that the resonant effect is closely related with laser intensity, and lower laser intensities are required to achieve a significant enhancement. When the intensity is lower than 2.28×10<sup>14</sup>  W/cm<sup>2</sup> at which multiphoton ionization dominates, resonant effect is enhanced by a factor of 1.4 to 4.4. When the intensity is higher than 2.28×10<sup>14</sup>  W/cm<sup>2</sup>, at which intensity tunnel ionization dominates, the resonant effect becomes weak and gradually fades away. It is shown that the resonant effect is still important for multiphoton ionization yet insignificant for tunnel ionization.
Yadong Zhao; Lan Jiang; Juqiang Fang; Qianghua Chen; Xiaowei Li; Yongfeng Lu
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Applied optics     Volume:  51     ISSN:  1539-4522     ISO Abbreviation:  Appl Opt     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-11     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0247660     Medline TA:  Appl Opt     Country:  United States    
Other Details:
Languages:  eng     Pagination:  7039-45     Citation Subset:  IM    
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