I currently serve as Deputy Group Leader in the Optical Materials and Target Science group in MSD. My research interests at LLNL include novel applications in laser-assisted material processing (e.g. metal additive manufacturing, laser-based CVD, nano-coarsening of metal films, non-contact laser polishing of glass), optical damage science, vibrational spectroscopy and in situ optical characterization of transient processes. Prior to LLNL I was a Member of Technical Staff at Bell Labs and worked on materials characterization of optical devices using novel spectroscopic techniques, stress-induced birefringence management in planar optical devices and research in advanced broadband access networks.
- (Cover Article) M. J. Matthews, S. T. Yang, N. Shen, S. Elhadj, R. N. Raman, G. Guss, et al., "Micro-Shaping, Polishing, and Damage Repair of Fused Silica Surfaces Using Focused Infrared Laser Beams," Advanced Engineering Materials, vol. 17, p. 247, 2015.
- M. J. Matthews, N. Shen, J. Honig, J. D. Bude, and A. M. Rubenchik, "Phase modulation and morphological evolution associated with surface-bound particle ablation," JOSA B, vol. 30, pp. 3233-3242, 2013.
- M. J. Matthews, G. Petitpas, and S. M. Aceves, "A study of spin isomer conversion kinetics in supercritical fluid hydrogen for cryogenic fuel storage technologies," Applied Physics Letters, vol. 99, p. 081906, 2011.
- (Cover Article) S. T. Yang, M. J. Matthews, S. Elhadj, D. Cooke, G. M. Guss, V. G. Draggoo, et al., "Comparing the use of mid-infrared versus far-infrared lasers for mitigating damage growth on fused silica," Applied Optics, vol. 49, pp. 2606-2616, 2010.
- M. J. Matthews, J. Hsu, S. Gu, and T. Kuech, "Carrier density imaging of lateral epitaxially overgrown GaN using scanning confocal Raman microscopy," Applied Physics Letters, vol. 79, pp. 3086-3088, 2001.
- M. Matthews, M. Pimenta, G. Dresselhaus, M. Dresselhaus, and M. Endo, "Origin of dispersive effects of the Raman D band in carbon materials," Physical Review B, vol. 59, p. R6585, 1999.