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Bio
Exploring the interaction between light and matter lies at the heart of all of my research. In recent years I have also developed a strong interest in photonics, and my most recent research focusses on two themes, detailed below
THz imaging:
Terahertz electromagnetic radiation is one of the last remaining unexplored regions of the electromagnetic spectrum. Until relatively recently, the THz region (0.1-3 THz, 0.1-3 mm), occupying a large portion of the electromagnetic spectrum between the infrared and microwave bands, has remained in relative obscurity due to a lack of efficient laboratory emitters, detectors and optical components compared to neighboring microwave and optical bands. Here, we explore the potential for developing new THz components and sensors to fill this “gap”, utilising novel magnetic and plasmonic responses of many materials in this region. We have also developed several powerful new forms of imaging in this spectral region, based on computational approaches. Imaging with these approaches can be “real” time (i.e. near video rate), and can even be used to see objects considerably smaller than the wavelength of the radiation, breaking the diffraction limit by more than two orders of magnitude.
Nonlinear optics:
In recent years, the field of plasmonics has offered a tantalizing glimpse into new possibilities to control light on nanometre length scale. However, the enormous potential of plasmonics as a means to manipulate light at the nanoscale is blocked by ohmic losses associated with the coinage metals currently used. Many real-life applications meanwhile require major improvements in performance, tuneability in wavelength, active control and modulation (for signal switching), and the direct generation and detection of plasmons. Looking to the future, there have been fantastic breakthroughs in recent months through non-linear optical measurements of 2D materials and thin films. Here, we explore the possibility of replacing conventional metals with new atomic scale, graphene-like layered materials. These materials have tuneable electromagnetic responses, as free electrons can controllably introduced by chemical, electrical or photo- doping, making the manipulating light on extreme sub-wavelength length scales possible.
Contributions to the Community
Sat on the organising committee for OTST 2011, Santa Barbara
Organiser of "Optics of Graphene and 2D Materials", 8th - 9th September 2015, Exeter.
External examiner for the award of PhD degrees at many UK and European universities
Member of the EPSRC peer review college
Reviewer for funding bodies including EPSRC, European Research Council and Netherlands Foundation for Fundamental Research on Matter (FOM)
Memberships
I am a member of the Institute of Physics.
THz imaging:
Terahertz electromagnetic radiation is one of the last remaining unexplored regions of the electromagnetic spectrum. Until relatively recently, the THz region (0.1-3 THz, 0.1-3 mm), occupying a large portion of the electromagnetic spectrum between the infrared and microwave bands, has remained in relative obscurity due to a lack of efficient laboratory emitters, detectors and optical components compared to neighboring microwave and optical bands. Here, we explore the potential for developing new THz components and sensors to fill this “gap”, utilising novel magnetic and plasmonic responses of many materials in this region. We have also developed several powerful new forms of imaging in this spectral region, based on computational approaches. Imaging with these approaches can be “real” time (i.e. near video rate), and can even be used to see objects considerably smaller than the wavelength of the radiation, breaking the diffraction limit by more than two orders of magnitude.
Nonlinear optics:
In recent years, the field of plasmonics has offered a tantalizing glimpse into new possibilities to control light on nanometre length scale. However, the enormous potential of plasmonics as a means to manipulate light at the nanoscale is blocked by ohmic losses associated with the coinage metals currently used. Many real-life applications meanwhile require major improvements in performance, tuneability in wavelength, active control and modulation (for signal switching), and the direct generation and detection of plasmons. Looking to the future, there have been fantastic breakthroughs in recent months through non-linear optical measurements of 2D materials and thin films. Here, we explore the possibility of replacing conventional metals with new atomic scale, graphene-like layered materials. These materials have tuneable electromagnetic responses, as free electrons can controllably introduced by chemical, electrical or photo- doping, making the manipulating light on extreme sub-wavelength length scales possible.
Contributions to the Community
Sat on the organising committee for OTST 2011, Santa Barbara
Organiser of "Optics of Graphene and 2D Materials", 8th - 9th September 2015, Exeter.
External examiner for the award of PhD degrees at many UK and European universities
Member of the EPSRC peer review college
Reviewer for funding bodies including EPSRC, European Research Council and Netherlands Foundation for Fundamental Research on Matter (FOM)
Memberships
I am a member of the Institute of Physics.
Research Interests
Papers共 145 篇Author StatisticsCo-AuthorSimilar Experts
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arxiv(2024)
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OPTICS EXPRESSno. 4 (2024): 5783-5792
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUESno. 99 (2023): 1-9
arXiv (Cornell University) (2023)
APPLIED SCIENCES-BASELno. 18 (2023): 10388-10388
Michal Mrnka,Euan Hendry,Jaroslav Láčík, Rachel A. Lennon,Lauren E. Barr,Ian R. Hooper,David B. Phillips
arXiv (Cornell University) (2022)
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