Raluca A Negres

Biography

Deputy group leader for laser material interaction science group
Staff scientist in Optics and Materials Science & Technology (OMST), NIF & Photon Science Directorate

Optical materials, thin films, laser induced damage, data mining, time-resolved imaging

Ph.D. Optical Physics, School of Optics/CREOL, University of Central Florida (UCF), Orlando, FL, 2001
M.S. Physics, UCF, Orlando, FL, 1998
B.S. Physics, University of Bucharest, Romania, 1993

Laurence T.A., Alessi D.A., Feigenbaum E., Negres R.A., Qiu S.R., Siders C.W., Spinka T.M., Stolz C.J., “Mirrors for petawatt lasers: Design principles, limitations, and solutions,” J. Appl. Phys. 128(7), 071101 (2020). http://dx.doi.org/10.1063/1.5131174

Stolz C.J., Negres R.A., “Ten-year summary of the Boulder Damage Symposium annual thin film laser damage competition,” Opt. Eng. 57(12), 121910 (2018). https://doi.org/10.1117/1.OE.57.12.121910

R. A. Negres, C. W. Carr, T. A. Laurence, K. Stanion, G. Guss, D. A. Cross, P. J. Wegner, and C. J. Stolz, “Laser-induced damage of intrinsic and extrinsic defects by picosecond pulses on multilayer dielectric coatings for petawatt-class lasers,” Opt. Eng. 56(1), 011008 (2016). http://dx.doi.org/10.1117/1.OE.56.1.011008
I. L. Bass, R. A. Negres, K. Stanion, G. Guss, and J. Bude, “Metallic burn paper used for in situ characterization of laser beam properties,” Appl. Opt. 55(12), 3131-3139 (2016). http://dx.doi.org/10.1364/AO.55.003131
S. G. Demos, R. A. Negres, R. N. Raman, N. Shen, A. M. Rubenchik, and M. J. Matthews, “Mechanisms governing the interaction of metallic particles with nanosecond laser pulses,” Opt. Express 24(7), 7792-7815 (2016). http://dx.doi.org/10.1364/OE.24.007792

D. A. Alessi, C. W. Carr, R. P. Hackel, R. A. Negres, K. Stanion, J. E. Fair, D. A. Cross, J. Nissen, R. Luthi, G. Guss, J. A. Britten, W. H. Gourdin, and C. Haefner, “Picosecond laser damage performance assessment of multilayer dielectric gratings in vacuum,”, Opt. Express 23(12), 15532-15544 (2015). http://dx.doi.org/10.1364/OE.23.015532
S. G. Demos, R. A. Negres, R. N. Raman, M. D. Feit, K. R. Manes, and A. M. Rubenchik, “Relaxation dynamics of nanosecond laser superheated material in dielectrics,” Optica 2(8), 765-772 (2015). http://dx.doi.org/10.1364/OPTICA.2.000765

R. A. Negres, D. A. Cross, L. M. Liao, M. J. Matthews, and C. W. Carr, “Growth model for laser-induced damage on the exit surface of fused silica under UV, ns laser irradiation,” Opt. Express 22(4), 3824-3844 (2014). http://dx.doi.org/10.1364/OE.22.003824

S. G. Demos, R. A. Negres, R. N. Raman, A. M. Rubenchik, and M. D. Feit, “Material response during nanosecond laser induced breakdown inside of the exit surface of fused silica,” Laser & Photon. Rev. 7(3), 444-452 (2013). http://dx.doi.org/10.1002/lpor.201200100

R. A. Negres, Z. M. Liao, G. M. Abdulla, D. A. Cross, M. A. Norton, and C. W. Carr, “Exploration of the multiparameter space of nanosecond-laser induced damage growth in fused silica optics,” Appl. Opt. 50(22), D12-D20 (2011). http://dx.doi.org/10.1364/AO.50.000D12

NIF&PS 2021 award for “Outstanding contributions to laboratory restart and operations during the COVID-19 pandemic”
NIF&PS 2017 award for “NIF Power and Energy Integrated Product Team”
Director’s Office 2016 S&T award for “Commissioning Advanced Radiographic Capability (ARC) on the National Ignition Facility”
NIF&PS 2016 Directorate award for “Leadership in the optimization and validation of safe operational limits for ARC optics”
NIF&PS 2010 Directorate award for “Development of version 2 damage rules”

Active Optica Publishing Group reviewer

Organizer of Thin Film Damage Competition at SPIE Laser Damage Symposium (2015-present)