Phys. Rev. A 69, 042903 (2004) [7 pages]Intrinsic single- and multiple-pulse laser-induced damage in silicate glasses in the femtosecond-to-nanosecond regionReceived 14 July 2003; revised 20 January 2004; published 21 April 2004 We show that the threshold power density of the intrinsic laser-induced damage in borosilicate glass at ∼1 μm wavelength does not depend on pulse duration from 2×10−13 to 3×10−8 s and has the same value for both single- and multiple-pulse exposure of the sample. This indicates that the mechanism of the intrinsic damage in glasses involves a collective response of a certain volume in the dielectric as a whole, such as “dielectric-metal” phase transition, rather than a process of individual generation and accumulation of electrons, such as multiphoton, tunneling, or avalanche. Also, we demonstrate that under femtosecond exposure the threshold of the plasma formation in transparent glasses is considerably higher than the threshold of the residual change of medium parameters. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.69.042903
DOI:
10.1103/PhysRevA.69.042903
PACS:
79.20.Ds, 81.16.−c, 32.80.Rm, 42.70.Ce
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.