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We present two strategies to minimize laser damage in transparent conductive films. The first consists of improving heat dissipation by selection of substrates with high thermal diffusivity or by addition of capping layer heatsinks. The second is reduction of bulk energy absorption by lowering free carrier density and increasing mobility, while maintaining film conductance with thicker films. Multi-pulse laser damage tests were performed on tin-doped indium oxide (ITO) films configured to improve optical lifetime damage performance. Conditions where improvements were not observed are also described. When bulk heating is not the dominant damage process, discrete defect-induced damage limits damage behavior.

In this work, we describe ab initio calculations and assignment of infrared (IR) spectra of hydrogen-bonded ion−molecular complexes that involve a fluxional proton: the linear N 2 H + •••OC and N 2 D + •••OC complexes. Given the challenges of describing fluxional proton dynamics and especially its IR activity, we use electric fielddriven classical trajectories, i.e., the driven molecular dynamics (DMD) method that was developed by us in recent years and for similar applications, in conjunction with high-level electronic structure theory. Namely, we present a modified and a numerically efficient implementation of DMD specifically for direct (or "on the fly") calculations, which we carry out at the MP2-F12/AVDZ level of theory for the potential energy surface (PES) and MP2/AVDZ for the dipole moment surfaces (DMSs). Detailed analysis of the PES, DMS, and the time-dependence of the first derivative of the DMS, referred to as the driving force, for the highly fluxional vibrations involving H + /D + revealed that the strongly non-harmonic PES and non-linear DMS yield remarkably complex vibrational spectra. Interestingly, the classical trajectories reveal a doublet in the proton transfer part of the spectrum with the two peaks at 1800 and 1980 cm −1 . We find that their shared intensity is due to a Fermi-like resonance interaction, within the classical limit, of the H + parallel stretch fundamental and an H + perpendicular bending overtone. This doublet is also observed in the deuterated species at 1360 and 1460 cm −1 .

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