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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 5 — Feb. 27, 2012
  • pp: 5754–5761

A bright point source of ultrashort hard x-ray pulses using biological cells

M. Krishnamurthy, Sudipta Mondal, Amit D. Lad, Kartik Bane, Saima Ahmed, V. Narayanan, R. Rajeev, Gourab Chatterjee, Prashant Kumar Singh, G. Ravindra Kumar, M. Kundu, and Krishanu Ray  »View Author Affiliations

Optics Express, Vol. 20, Issue 5, pp. 5754-5761 (2012)

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We demonstrate that the interaction of intense femtosecond light on a plain solid substrate can be substantially altered by a few micron layer coating of bacterial cells, live or dead. Using E. Coli cells, we show that at an intensity of 1016W cm−2, the bremsstraahlung hard x-ray emission (up to 300 keV), is increased by more than two orders of magnitude as compared to a plain glass slab. Particle-in-cell simulations carried out by modeling the bacterial cells as ellipsoidal particles show that the hot electron generation is indeed enhanced by the presence of microstructures. This new methodology should pave way for using microbiological systems of varied shapes to control intense laser produced plasmas for EUV/x-ray generation.

© 2012 OSA

OCIS Codes
(170.1420) Medical optics and biotechnology : Biology
(320.2250) Ultrafast optics : Femtosecond phenomena
(320.7100) Ultrafast optics : Ultrafast measurements
(340.7480) X-ray optics : X-rays, soft x-rays, extreme ultraviolet (EUV)
(350.5400) Other areas of optics : Plasmas

ToC Category:
X-ray Optics

Original Manuscript: October 14, 2011
Revised Manuscript: November 21, 2011
Manuscript Accepted: November 22, 2011
Published: February 24, 2012

Virtual Issues
Vol. 7, Iss. 4 Virtual Journal for Biomedical Optics

M. Krishnamurthy, Sudipta Mondal, Amit D. Lad, Kartik Bane, Saima Ahmed, V. Narayanan, R. Rajeev, Gourab Chatterjee, Prashant Kumar Singh, G. Ravindra Kumar, M. Kundu, and Krishanu Ray, "A bright point source of ultrashort hard x-ray pulses using biological cells," Opt. Express 20, 5754-5761 (2012)

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