Title

Picosecond light-pulse induced damage to diamond

Abstract

We report on picosecond laser-induced damage experiments that were carried out on a natural type-IIa diamond and a thick specimen of highquality chemically vapor-deposited (CVD) diamond. In conjunction with earlier measurements performed elsewhere on an "optically thick" single crystal, it is shown that for spot sizes (2ω) ranging from 3 to 60 μm, the breakdown field strength (EBD) at the damage threshold of diamond obeys a pattern best described as follows: EBD≃ A/√2ω, where A=30.7 and 38.7 MVμ1/2/cm at 532 and 1064 nm, respectively. The case of CVD diamond demonstrates that, if problems arising from localized high absorption at the deposition surface can be avoided, this material should be of much promise for contemplated high-power free-electron laser window applications. In Appendix, we show that corrections for self-focusing in laser damage experiments depend not only on the peak pulse power but also on the position of the diffraction prefocus and the length of the Rayleigh range.

Publication Date

7-28-1994

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

2114

Number of Pages

25-35

Document Type

Article; Proceedings Paper

Identifier

scopus

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.180932

Socpus ID

0028732729 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0028732729

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