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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 4 — Feb. 24, 2014
  • pp: 4559–4574

Optimal light collection from diffuse sources: application to optical fibre-coupled luminescence dosimetry

Alexandre M. C. Santos, Mohammad Mohammadi, and Shahraam Afshar, V.  »View Author Affiliations

Optics Express, Vol. 22, Issue 4, pp. 4559-4574 (2014)

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A model is developed to evaluate the light collection of a diffuse light source located at the tip of an optical fibre. The model is confirmed experimentally and used to evaluate and compare the light collection efficiency of different fibre-coupled luminescence dosimeter probe designs. The model includes contributions from both meridional and skew rays, and considers the light collection from an optically attenuating scintillator. Hence the model enables the optimisation of different, but useful and new probe materials such as BeO ceramic. Four different dosimeter architectures are considered, including previously investigated probe designs; the butt-coupled and reflective wall, along with two novel designs. The novel designs utilise a combination of the scintillating material and transparent media to increase the light collection. Simulations indicate that the novel probes are more efficient in light collection for applications in which it is necessary to minimise the volume of the scintillating material.

© 2014 Optical Society of America

OCIS Codes
(040.0040) Detectors : Detectors
(260.3800) Physical optics : Luminescence
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:
Geometric Optics

Original Manuscript: November 21, 2013
Revised Manuscript: January 22, 2014
Manuscript Accepted: January 22, 2014
Published: February 20, 2014

Virtual Issues
Vol. 9, Iss. 4 Virtual Journal for Biomedical Optics

Alexandre M. C. Santos, Mohammad Mohammadi, and Shahraam Afshar, "Optimal light collection from diffuse sources: application to optical fibre-coupled luminescence dosimetry," Opt. Express 22, 4559-4574 (2014)

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  1. S. Afshar, S. C. Warren-Smith, T. M. Monro, “Enhancement of fluorescence-based sensing using microstructured optical fibres,” Opt. Express 15(26), 17891–17901 (2007). [CrossRef] [PubMed]
  2. S. C. Warren-Smith, S. Afshar, T. M. Monro, “Fluorescence-based sensing with optical nanowires: a generalized model and experimental validation,” Opt. Express 18(9), 9474–9485 (2010). [CrossRef] [PubMed]
  3. M. Jianjun, W. J. Bock, “Addressing factors affecting fluorescent signal collection of a multimode photonic crystal fiber fluorometer,” IEEE Trans. Instrum. Meas. 57(12), 2813–2818 (2008). [CrossRef]
  4. U. Utzinger, R. R. Richards-Kortum, “Fiber optic probes for biomedical optical spectroscopy,” J. Biomed. Opt. 8(1), 121–147 (2003). [CrossRef] [PubMed]
  5. A. S. Beddar, T. R. Mackie, F. H. Attix, “Water-equivalent plastic scintillation detectors for high-energy beam dosimetry: I. Physical characteristics and theoretical consideration,” Phys. Med. Biol. 37(10), 1883–1900 (1992). [CrossRef] [PubMed]
  6. A. S. Beddar, T. R. Mackie, F. H. Attix, “Water-equivalent plastic scintillation detectors for high-energy beam dosimetry: II. Properties and measurements,” Phys. Med. Biol. 37(10), 1901–1913 (1992). [CrossRef] [PubMed]
  7. N. Suchowerska, J. Lambert, T. Nakano, S. Law, J. Elsey, D. R. McKenzie, “A fibre optic dosimeter customised for brachytherapy,” Radiat. Meas. 42(4–5), 929–932 (2007). [CrossRef]
  8. C. E. Andersen, S. K. Nielsen, S. Greilich, J. Helt-Hansen, J. C. Lindegaard, K. Tanderup, “Characterization of a fiber-coupled Al2O3:C luminescence dosimetry system for online in vivo dose verification during 192Ir brachytherapy,” Med. Phys. 36(3), 708–718 (2009). [CrossRef] [PubMed]
  9. C. E. Andersen, S. K. Nielsen, J. C. Lindegaard, K. Tanderup, “Time-resolved in vivo luminescence dosimetry for online error detection in pulsed dose-rate brachytherapy,” Med. Phys. 36(11), 5033–5043 (2009). [CrossRef] [PubMed]
  10. J. Lambert, D. R. McKenzie, S. Law, J. Elsey, N. Suchowerska, “A plastic scintillation dosimeter for high dose rate brachytherapy,” Phys. Med. Biol. 51(21), 5505–5516 (2006). [CrossRef] [PubMed]
  11. J. Lambert, Y. Yin, D. R. McKenzie, S. H. Law, A. Ralston, N. Suchowerska, “A prototype scintillation dosimeter customized for small and dynamic megavoltage radiation fields,” Phys. Med. Biol. 55(4), 1115–1126 (2010). [CrossRef] [PubMed]
  12. A. F. Fernandez, B. Brichard, S. O’Keeffe, C. Fitzpatrick, E. Lewis, J. R. Vaille, L. Dusseau, D. A. Jackson, F. Ravotti, M. Glaser, H. El-Rabii, “Real-time fibre optic radiation dosimeters for nuclear environment monitoring around thermonuclear reactors,” Fusion Eng. Des. 83(1), 50–59 (2008). [CrossRef]
  13. A. S. Beddar, N. Suchowerska, S. H. Law, “Plastic scintillation dosimetry for radiation therapy: minimizing capture of Cerenkov radiation noise,” Phys. Med. Biol. 49(5), 783–790 (2004). [CrossRef] [PubMed]
  14. A. S. Beddar, S. Law, N. Suchowerska, T. R. Mackie, “Plastic scintillation dosimetry: optimization of light collection efficiency,” Phys. Med. Biol. 48(9), 1141–1152 (2003). [CrossRef] [PubMed]
  15. J. Elsey, D. R. McKenzie, J. Lambert, N. Suchowerska, S. L. Law, S. C. Fleming, “Optimal coupling of light from a cylindrical scintillator into an optical fiber,” Appl. Opt. 46(3), 397–404 (2007). [CrossRef] [PubMed]
  16. L. Lembo, M. Pimpinella, B. Mukherjee, “Self optical attenuation coefficient of TL glow in BeO detectors,” Radiat. Prot. Dosimetry 33, 43–45 (1990).
  17. A. M. C. Santos, M. Mohammadi, J. Asp, T. M. Monro, S. Afshar V, “Characterisation of a real-time fibre-coupled beryllium oxide (BeO) luminescence dosimeter in X-ray beams,” Radiat. Meas. 53–54, 1–7 (2013). [CrossRef]
  18. A. W. Snyder and J. D. Love, Optical Waveguide Theory (Chapman and Hall, 1983).
  19. A. Snyder, “Leaky-ray theory of optical waveguides of circular cross section,” Appl. Phys. A Mater. 4, 273–298 (1974).

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