Decomposition of KH 2 PO 4 crystals during laser-induced breakdown

R. A. Negres, S. O. Kucheyev, P. DeMange, C. Bostedt, T. Van Buuren, A. J. Nelson, S. G. Demos

Research output: Contribution to journalArticle

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Abstract

The structure of KH2 PO4 single crystals (so-called KDP) irradiated with ∼3 ns, 355 nm laser pulses with fluences above the laser-induced breakdown threshold is studied by a combination of Raman scattering, photoluminescence, and soft x-ray absorption spectroscopies. We compare spectra from the as-grown material, surface and bulk laser-induced damage sites, as well as from KPO3 references. Results show that irradiation with fluences above the laser-induced breakdown threshold leads to decomposition of KDP at surface damage sites but not at bulk damage sites. New spectroscopic features are attributed to dehydration products. For the laser irradiation conditions used in this study, the decomposed near-surface layer absorbs photons at ~3.4 eV (364 nm). These results may explain the recently reported fact that surface laser damage sites in KDP crystals tend to grow with subsequent exposure to high-power laser pulses, while bulk damage sites do not.

Original languageEnglish (US)
Article number171107
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Volume86
Issue number17
DOIs
StatePublished - Apr 25 2005
Externally publishedYes

Fingerprint

breakdown
decomposition
damage
crystals
lasers
fluence
irradiation
thresholds
laser damage
pulses
x ray absorption
dehydration
high power lasers
x ray spectroscopy
surface layers
absorption spectroscopy
Raman spectra
photoluminescence
single crystals
photons

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Negres, R. A., Kucheyev, S. O., DeMange, P., Bostedt, C., Van Buuren, T., Nelson, A. J., & Demos, S. G. (2005). Decomposition of KH 2 PO 4 crystals during laser-induced breakdown. Applied Physics Letters, 86(17), 1-3. [171107]. https://doi.org/10.1063/1.1921349

Decomposition of KH 2 PO 4 crystals during laser-induced breakdown. / Negres, R. A.; Kucheyev, S. O.; DeMange, P.; Bostedt, C.; Van Buuren, T.; Nelson, A. J.; Demos, S. G.

In: Applied Physics Letters, Vol. 86, No. 17, 171107, 25.04.2005, p. 1-3.

Research output: Contribution to journalArticle

Negres, RA, Kucheyev, SO, DeMange, P, Bostedt, C, Van Buuren, T, Nelson, AJ & Demos, SG 2005, 'Decomposition of KH 2 PO 4 crystals during laser-induced breakdown', Applied Physics Letters, vol. 86, no. 17, 171107, pp. 1-3. https://doi.org/10.1063/1.1921349
Negres RA, Kucheyev SO, DeMange P, Bostedt C, Van Buuren T, Nelson AJ et al. Decomposition of KH 2 PO 4 crystals during laser-induced breakdown. Applied Physics Letters. 2005 Apr 25;86(17):1-3. 171107. https://doi.org/10.1063/1.1921349
Negres, R. A. ; Kucheyev, S. O. ; DeMange, P. ; Bostedt, C. ; Van Buuren, T. ; Nelson, A. J. ; Demos, S. G. / Decomposition of KH 2 PO 4 crystals during laser-induced breakdown. In: Applied Physics Letters. 2005 ; Vol. 86, No. 17. pp. 1-3.
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