Precise and Accurate Measurements of Strong-Field Photoionization and a Transferable Laser Intensity Calibration Standard

WC Wallace; O Ghafur; C Khurmi; SU Sainadh; JE Calvert; DE Laban; MG Pullen; K Bartschat; AN Grum-Grzhimailo; D Wells; HM Quiney; XM Tong; IV Litvinyuk; RT Sang; D Kielpinski

Journal article

Precise and Accurate Measurements of Strong-Field Photoionization and a Transferable Laser Intensity Calibration Standard

WC Wallace, O Ghafur, C Khurmi, SU Sainadh, JE Calvert, DE Laban, MG Pullen, K Bartschat, AN Grum-Grzhimailo, D Wells, HM Quiney, XM Tong, IV Litvinyuk, RT Sang, D Kielpinski

Physical Review Letters | AMER PHYSICAL SOC | Published : 2016

DOI: 10.1103/PhysRevLett.117.053001

Abstract

Ionization of atoms and molecules in strong laser fields is a fundamental process in many fields of research, especially in the emerging field of attosecond science. So far, demonstrably accurate data have only been acquired for atomic hydrogen (H), a species that is accessible to few investigators. Here, we present measurements of the ionization yield for argon, krypton, and xenon with percent-level accuracy, calibrated using H, in a laser regime widely used in attosecond science. We derive a transferable calibration standard for laser peak intensity, accurate to 1.3%, that is based on a simple reference curve. In addition, our measurements provide a much needed benchmark for testing models..

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University of Melbourne Researchers

Harry Quiney Author

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ARC CENTRE OF EXCELLENCE IN COHERENT X-RAY SCIENCE

The twenty first century is said to be the century of biology. And there is no doubt that the development of our understanding of biological..

Grants

Awarded by National Science Foundation

Funding Acknowledgements

This work was supported by the U.S. Air Force Office of Scientific Research under Grant No. FA2386-12-1-4025 and by the Australian Research Council (ARC) Centre of Excellence for Coherent X-Ray Science under Grant No. CE0561787. W. C. W., J. E. C., M. G. P., and D. E. L. were supported by Australian Postgraduate Awards. K. B. acknowledges support from the U.S. National Science Foundation under Grant No. PHY-1430245 and the XSEDE Allocation No. PHY-090031. X. M. T. was supported by a Grant-in-Aid for Scientific Research (No. C24540421) from the Japan Society for the Promotion of Science. Some calculations were carried out by the supercomputer of the HA-PACS project for advanced interdisciplinary computational sciences by exa-scale computing technology, others on Stampede at the Texas Advanced Computer Center. D. K. was supported by ARC Future Fellowship FT110100513.