Quantitative Laser Testing for Predicting Heavy-Ion SEE Response – Part 2: Accurately Determining Laser-Equivalent LET
IEEE Transactions on Nuclear Science（2023）
摘要
An accessible approach for estimating the laser-equivalent linear energy transfer (
LET
L
) for any pulsed-laser single-event effects (PL SEE) testing condition is developed and validated. This approach satisfies one of the three criteria required for laser testing to serve as a predictive surrogate for heavy-ion testing. By using easily interpretable equations and identifying the relevant laser, materials, and device parameters, the
LET
L
and its uncertainty (Δ
LET
L
) can be accurately estimated. The approach is validated by observing agreement between experimentally acquired and
LET
L
-calculated collected charge across a variety of laser testing geometries and for multiple devices with different sensitive depths. Given the ubiquitous use of the 1064 nm wavelength for laser testing, additional analyses are devoted to understanding the contributions to the
LET
L
. The sensitivity of the
LET
L
to its input parameters and their error contributions to Δ
LET
L
are also considered. By employing this calculational approach, multiple testing conditions are found to satisfy the three criteria for predictive testing. Software that can facilitate calculations of
LET
L
and other laser-generated quantities would benefit the radiation effects community and efforts are currently underway towards this goal.
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关键词
Single-event transient (SET),predictive testing,correlation methods,laser testing,heavy-ion testing,single-photon absorption,two-photon absorption,pulsed-laser,linear energy transfer (LET),single-event effect (SEE)
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