My initial research focused on doped glasses and crystals,[1-13] these dopants included transition metals, rare-earths and semi metals including bismuth and lead. I made several important discoveries including first vanadium doped glass with optical emission covering the entire telecommunications window [3], and the broadest ever reported emission from a bismuth doped glass [6]. I also have a background in non-linear optics from my work in fabricating waveguides with a femtosecond laser in a high optical nonlinearity material[14] and studying the propagation of telecoms wavelength pulses through these waveguides[15].
I have observed surface plasmon resonances in Ni nanoparticles formed by exposure of a Ni doped glass-ceramic to femtosecond laser radiation[16]. I later investigated the el
more...My initial research focused on doped glasses and crystals,[1-13] these dopants included transition metals, rare-earths and semi metals including bismuth and lead. I made several important discoveries including first vanadium doped glass with optical emission covering the entire telecommunications window [3], and the broadest ever reported emission from a bismuth doped glass [6]. I also have a background in non-linear optics from my work in fabricating waveguides with a femtosecond laser in a high optical nonlinearity material[14] and studying the propagation of telecoms wavelength pulses through these waveguides[15].
I have observed surface plasmon resonances in Ni nanoparticles formed by exposure of a Ni doped glass-ceramic to femtosecond laser radiation[16]. I later investigated the electrical properties of bismuth implanted materials, and it was my previous work on the optical properties of bismuth doped materials which gave me the insight to propose the theory[17] that the disparate phenomena of carrier type reversal and photoluminescence associated bismuth doping are caused by the same bismuth species, after having been previously considered completely unrelated phenomena.
My previous work on determining the local environment of transition metals doped in glass by analysing their photoluminescence spectra[18] was helpful when I applied this analysis to the significantly more complex problem of determining the local environment of rare-earths implanted into silicon by analysing their photoluminescence spectra[19]. I am an expert in ion implantation, as shown by my publications regarding rare-earth implanted silicon [19] and other publications on implanted semiconductors[17, 21-23] including a Nature Communications paper regarding Bi implantation [24]. I have expertise in nano-scale device fabrication from my work on carbon nanotube devices [25-28]. The carbon nanotube devices that I developed were fabricated using photolithography and electron beam lithography and utilised many other fabrication techniques such as reactive ion etching and atomic layer deposition. I spent much of my time optimizing the fabrication process by improving the alignment accuracy of the electron beam lithography system, which needed to be at least 30 nm. I did this by optimizing the resist processing to give the highest accuracy alignment marks. I also overcame the incompatibility of various layers to thermal processing by using novel metals, such as molybdenum. I have also fabricated devices that required focused ion beam etching [23], as well as ion implantation [24].
1. Hughes, M., R.J. Curry, A. Mairaj, J.E. Aronson, W.S. Brocklesby, and D.W. Hewak. Transition metal doped chalcogenide glasses for broadband near-infrared sources. in SPIE Symposium on Optics and Photonics in Security and Defence 2004. London.
2. Hughes, M., D.W. Hewak, and R.J. Curry. Concentration dependence of the fluorescence decay profile in transition metal doped chalcogenide glass. in Photonics West. 2007. San Jose, USA: SPIE.
3. Hughes, M., H. Rutt, D. Hewak, and R. Curry, Spectroscopy of vanadium (III) doped gallium lanthanum sulphide glass. Applied Physics Letters, 2007. 90(3): p. 031108.
4. Hughes, M., T. Suzuki, and Y. Ohishi, Advanced bismuth doped lead-germanate glass for broadband optical gain devices. J. Opt. Soc. Am. B, 2008. 25(8): p. 1380-1386
5. Hughes, M., T. Suzuki, and Y. Ohishi, Towards a high-performance optical gain medium based on bismuth and aluminum co-doped germanate glass. J. Non-Cryst. Solids, 2010. 356: p. 407-418.
6. Hughes, M.A., T. Akada, T. Suzuki, Y. Ohishi, and D.W. Hewak, Ultrabroad emission from a bismuth doped chalcogenide glass. Opt. Express, 2009. 17(22): p. 19345-19355.
7. Hughes, M.A., R.J. Curry, and D.W. Hewak, Spectroscopy of titanium-doped gallium lanthanum sulfide glass. Journal of the Optical Society of America B: Optical Physics, 2008. 25(9): p. 1458-1465.
8. Hughes, M.A., T. Suzuki, and Y. Ohishi, Spectroscopy of bismuth doped lead-aluminum-germanate glass and yttrium-aluminum-silicate glass. J. Non-Cryst. Solids, 2010. 356(44-49 ): p. 2302-2309
9. Liao, M.S., G.S. Qin, X. Yan, M. Hughes, T. Suzuki, and Y. Ohishi, Evaluating upconversion materials developed to improve the efficiency of solar cells: comment. Journal of the Optical Society of America B-Optical Physics, 2010. 27(7): p. 1352-1355.
10. Mizuno, S., H. Nasu, M. Hughes, T. Suzuki, H. Ito, K. Hasegawa, and Y. Ohishi. The efficiencies of energy transfer from Cr to Nd ions in silicate glasses. in Photonics West. 2010. San Francisco.
11. Suzuki, T., M. Hughes, and Y. Ohishi, Optical properties of Ni-doped MgGa2O4 single crystals grown by floating zone method. Journal of Luminescence, 2010. 130(1): p. 121-126.
12. Suzuki, T., H. Nasu, M. Hughes, S. Mizuno, K. Hasegawa, H. Ito, and Y. Ohishi, Quantum efficiency measurements on Nd-doped glasses for solar pumped lasers. Journal of Non-Crystalline Solids, 2010. 356(44-49): p. 2344-2349.
13. Suzuki, T., H. Nasu, M.A. Hughes, S. Mizuno, K. Hasegawa, and Y. Ohishi. Excitation wavelength dependence of quantum efficiencies of Nd-doped glasses for solar pumped fiber lasers. in Photonics West. 2010. San Francisco.
14. Hughes, M., W. Yang, and D. Hewak, Fabrication and characterization of femtosecond laser written waveguides in chalcogenide glass. Applied Physics Letters, 2007. 90(13): p. 131113.
15. Hughes, M.A., W. Yang, and D.W. Hewak, Spectral broadening in femtosecond laser written waveguides in chalcogenide glass. Journal of the Optical Society of America B: Optical Physics, 2009. 26(7): p. 1370-1378.
16. Hughes, M.A., K.P. Homewood, R.J. Curry, Y. Ohishi, and T. Suzuki, Waveguides in Ni-doped glass and glass–ceramic written with a 1kHz femtosecond laser. Optical Materials, 2014. 36(9): p. 1604-1608.
17. Hughes, M.A., R.M. Gwilliam, K. Homewood, B. Gholipour, D.W. Hewak, T.-H. Lee, S.R. Elliott, T. Suzuki, Y. Ohishi, T. Kohoutek, and R.J. Curry, On the analogy between photoluminescence and carrier-type reversal in Bi- and Pb-doped glasses. Opt. Express, 2013. 21(7): p. 8101-8115.
18. Hughes, M.A., R.J. Curry, and D.W. Hewak, Determination of the oxidation state and coordination of a vanadium doped chalcogenide glass. Optical Materials, 2011. 33: p. 315–322.
19. Hughes, M.A., M.A. Lourenço, J.D. Carey, B. Murdin, and K.P. Homewood, Crystal field analysis of Dy and Tm implanted silicon for photonic and quantum technologies. Optics Express, 2014. 22: p. 29292–29303
20. Liao, M.S., C. Chaudhari, G.S. Qin, X. Yan, C. Kito, T. Suzuki, Y. Ohishi, M. Matsumoto, and T. Misumi, Fabrication and characterization of a chalcogenide-tellurite composite microstructure fiber with high nonlinearity. Optics Express, 2009. 17(24): p. 21608-21614.
21. Fedorenko, Y.G., M.A. Hughes, J.L.C.C. Jeynes, R.M. Gwilliam, K.P. Homewood, J. Yao, D.W. Hewak, T.-H. Lee, S.R. Elliott, B. Gholipour, and R.J. Curry. Electrical properties of amorphous chalcogenide/silicon heterojunctions modified by ion implantation. in SPIE Photonics West. 2014.
22. Hughes, M.A., Y. Federenko, T.H. Lee, J. Yao, B. Gholipour, R.M. Gwilliam, K.P. Homewood, D.W. Hewak, S.R. Elliott, and R.J. Curry. Optical and electronic properties of bismuth-implanted glasses. in SPIE Photonics West. 2014.
23. Hughes, M.A., Y. Fedorenko, R.M. Gwilliam, K.P. Homewood, S. Hinder, B. Gholipour, D.W. Hewak, T.-H. Lee, S.R. Elliott, and R.J. Curry, Ion-implantation-enhanced chalcogenide-glass resistive-switching devices. Applied Physics Letters, 2014. 105(8): p. 083506.
24. Hughes, M.A., Y. Fedorenko, B. Gholipour, J. Yao, T.-H. Lee, M.G. Russell, K.P. Homewood, S. Hinder, D.W. Hewak, S.R. Elliott, and R.J. Curry, N-type chalcogenides by ion implantation. Nature Communications, 2014. 5: p. 5346.
25. Hughes, M.A., K.P. Homewood, R.J. Curry, Y. Ohno, and T. Mizutani, An ultra-low leakage current single carbon nanotube diode with split-gate and asymmetric contact geometry. Applied Physics Letters, 2013. 103(13): p. 133508.
26. Hughes, M.A., K.P. Homewood, R.J. Curry, Y. Ohno, and T. Mizutani, Photocurrent from a carbon nanotube diode with split-gate and asymmetric contact geometry. Mater. Res. Express, 2014. 1(2): p. 026304.
27. Hughes, M.A., K.P. Homewood, R.J. Curry, Y. Ohno, and T. Mizutani. Split gate and asymmetric contact carbon nanotube optical devices. in SPIE Photonics West. 2014.
28. Hughes, M.A., Y. Ohno, and T. Mizutani, Electroluminescence from an Electrostatically Doped Carbon Nanotube Field-Effect Transistor. Nanosci. Nanotech. Lett. , 2014. 8: p. 881-886
ORCID: https://orcid.org/0000-0002-0877-5279, McMaster, R, Proctor, JE