Prof. Judith M. Dawes Profile

Prof. Judith M. Dawes

Professor of Physics and Director of MQ Photonics at Macquarie Univ

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Author

Publications (18)

Proceedings Article | 11 March 2020 Paper

Plasmon resonance of spherical and ellipsoidal gold particles in hexagonal-plasmonic arrays

Nonthanan Sitpathom, Judith Dawes, Tanyakorn Muangnapoh, Pisist Kumnorkaew, Sujin Suwana, Asawin Sinsarp, Tanakorn Osotchan

Proceedings Volume 11331, 1133103 (2020) https://doi.org/10.1117/12.2552985

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Proceedings Article | 10 September 2014 Paper

Focusing surface plasmons by a plasmonic lens

Thanh Phong Vo, Alireza Maleki, James Downes, David Coutts, Judith Dawes

Proceedings Volume 9163, 91633L (2014) https://doi.org/10.1117/12.2060618

KEYWORDS: Surface plasmons, Near field scanning optical microscopy, Plasmonics, Near field optics, Gold, Microscopy, Scanning electron microscopy, Free space optics, Numerical simulations, Glasses

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Proceedings Article | 23 July 2010 Paper

Fibre Bragg gratings for temporal spectral astronomy

Geraldine Mariën, Nick Cvetojevic, Nemanja Jovanovic, Judith Dawes, Joss Bland-Hawthorn, Roger Haynes, Jon Lawrence, Quentin Parker, Michael Withford

Proceedings Volume 7739, 77392C (2010) https://doi.org/10.1117/12.856784

KEYWORDS: Fiber Bragg gratings, Astronomy, Optical filters, Reflectivity, Stars, Spectral resolution, Telescopes, Optical fibers, Single mode fibers, Signal to noise ratio

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Proceedings Article | 5 June 2009 Open Access

Web-based photonics simulator for secondary school students

Sam Campbell, Kali Madden, Adam Strickland, Robert Williams, Nemanja Jovanovic, Benjamin Johnston, Judith Dawes

Proceedings Volume 9666, 96660V (2009) https://doi.org/10.1117/12.2207975

KEYWORDS: Photonics, Receivers, Optical amplifiers, Binary data, Optical communications, Associative arrays, Visualization, Computer simulations, Video, Photons

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Proceedings Article | 23 July 2008 Paper

Focal ratio degradation: a new perspective

Dionne Haynes, Michael Withford, Judith Dawes, Roger Haynes, Joss Bland-Hawthorn

Proceedings Volume 7018, 70182U (2008) https://doi.org/10.1117/12.788735

KEYWORDS: Scattering, Surface roughness, Diffusion, Polishing, Laser scattering, Light scattering, Convolution, Instrument modeling, Astronomy, Multimode fibers

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Proceedings Article | 17 January 2008 Paper

Self-assembly around curved surfaces

Luke Stewart, Graham Marshall, Judith Dawes, Michael Withford, Adel Rahmani

Proceedings Volume 6801, 68011A (2008) https://doi.org/10.1117/12.769338

KEYWORDS: Optical spheres, Photonic crystals, Photonics, Optical fibers, Microscopes, Crystals, Molecular self-assembly, Scanning electron microscopy, Photonic crystal fibers, Refractive index

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Proceedings Article | 8 January 2008 Paper

Characterization of fs-laser written refractive index changes using near-field scanning optical microscopy

D. Little, P. Dekker, A. Rahmani, J. Dawes, G. Marshall, M. Withford

Proceedings Volume 6801, 680119 (2008) https://doi.org/10.1117/12.761087

KEYWORDS: Waveguides, Near field scanning optical microscopy, Refractive index, Optical microscopes, Polishing, Interfaces, Femtosecond phenomena, Dielectrics, Glasses, Silica

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Proceedings Article | 1 September 2004 Paper

Polarized operation of Yb:YAl₃(BO₃)₄ CW and mode-locked lasers

Yanrong Song, Bronwen Taylor, Peter Dekker, Judith Dawes, James Piper

Proceedings Volume 5460, (2004) https://doi.org/10.1117/12.545315

KEYWORDS: Polarization, Mode locking, Crystals, Mirrors, Semiconductor lasers, Laser crystals, Continuous wave operation, Absorption, Ytterbium, Laser systems engineering

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Proceedings Article | 1 June 2004 Paper

Subpicosecond and picosecond laser ablation of dental enamel: comparative analysis

Andrei Rode, Nathan Madsen, Vesselin Kolev, Eugene Gamaly, Barry Luther-Davies, Judith Dawes, A. Chan

Proceedings Volume 5340, (2004) https://doi.org/10.1117/12.538835

KEYWORDS: Teeth, Laser ablation, Pulsed laser operation, Laser tissue interaction, Ultraviolet radiation, Laser applications, Natural surfaces, Tissues, Picosecond phenomena, Absorption

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Proceedings Article | 25 March 2004 Paper

Fabrication of photonic devices using novel laser-assisted methods

Michael Withford, Andrew Lee, Benjamin Johnston, Martin Ams, Judith Dawes, James Piper

Proceedings Volume 5277, (2004) https://doi.org/10.1117/12.524399

KEYWORDS: Photonic devices, Photonics, Packaging, Laser processing, Micromachining, Optical lithography, Electronics, Rapid manufacturing, Lithium niobate, Photonic crystals

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Proceedings Article | 17 June 2003 Paper

Energy transfer studies and efficient cw laser operation of a cw Er,Yb:YCOB laser at 1.55 μm

Phillip Burns, Judith Dawes, Peter Dekker, James Piper, Haidong Jiang, Huiajing Jiang, Jiyang Wang

Proceedings Volume 4968, (2003) https://doi.org/10.1117/12.501641

KEYWORDS: Crystals, Erbium, Ytterbium, Laser crystals, Ions, Absorption, Continuous wave operation, Energy transfer, Semiconductor lasers, Glasses

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Proceedings Article | 22 June 1999 Paper

ICG-doped albumin protein solders for improved tissue repair

Karen McNally-Heintzelman, Brian Sorg, Ashley Welch, Judith Dawes

Proceedings Volume 3590, (1999) https://doi.org/10.1117/12.350951

KEYWORDS: Proteins, Laser welding, Laser tissue interaction, Tissues, Solids, Liquids, Natural surfaces, Collagen, Semiconductor lasers, Interfaces

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Proceedings Article | 1 July 1998 Paper

Optimal parameters for laser tissue soldering

Karen McNally-Heintzelman, Brian Sorg, Eric Chan, Ashley Welch, Judith Dawes, Earl Owen

Proceedings Volume 3245, (1998) https://doi.org/10.1117/12.312299

KEYWORDS: Proteins, Solids, Laser welding, Liquids, Tissues, Laser tissue interaction, Natural surfaces, Temperature metrology, Semiconductor lasers, Laser applications

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Proceedings Article | 14 January 1998 Paper

Laser solder repair technique for nerve anastomosis: temperatures required for optimal tensile strength

Karen McNally-Heintzelman, Judith Dawes, Antonio Lauto, Anthony Parker, Earl Owen, James Piper

Proceedings Volume 3195, (1998) https://doi.org/10.1117/12.297913

KEYWORDS: Nerve, Laser welding, Proteins, Solids, Semiconductor lasers, Laser tissue interaction, Temperature metrology, Interfaces, Tissues, Radiometry

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Laser-assisted repair of nerves is often unsatisfactory and has a high failure rate. Two disadvantages of laser assisted procedures are low initial strength of the resulting anastomosis and thermal damage of tissue by laser heating. Temporary or permanent stay sutures are used and fluid solders have been proposed to increase the strength of the repair. These techniques, however, have their own disadvantages including foreign body reaction and difficulty of application. To address these problems solid protein solder strips have been developed for use in conjunction with a diode laser for nerve anastomosis. The protein helps to supplement the bond, especially in the acute healing phase up to five days post- operative. Indocyanine green dye is added to the protein solder to absorb a laser wavelength (approximately 800 nm) that is poorly absorbed by water and other bodily tissues. This reduces the collateral thermal damage typically associated with other laser techniques. An investigation of the feasibility of the laser-solder repair technique in terms of required laser irradiance, tensile strength of the repair, and solder and tissue temperature is reported here. The tensile strength of repaired nerves rose steadily with laser irradiance reaching a maximum of 105 plus or minus 10 N.cm^-2 at 12.7 W.cm^-2. When higher laser irradiances were used the tensile strength of the resulting bonds dropped. Histopathological analysis of the laser- soldered nerves, conducted immediately after surgery, showed the solder to have adhered well to the perineurial membrane, with minimal damage to the inner axons of the nerve. The maximum temperature reached at the solder surface and at the solder/nerve interface, measured using a non-contact fiber optic radiometer and thermocouple respectively, also rose steadily with laser irradiance. At 12.7 W.cm^-2, the temperatures reached at the surface and at the interface were 85 plus or minus 4 and 68 plus or minus 4 degrees Celsius respectively. This study demonstrates the feasibility of the laser-solder repair technique for nerve anastomosis resulting in improved tensile strength. The welding temperature required to achieve optimal tensile strength has been identified.

Proceedings Article | 15 May 1997 Paper

Laser-dye ablation technique for removal of carious dentin and enamel

Karen McNally-Heintzelman, Barrie Gillings, Judith Dawes

Proceedings Volume 2973, (1997) https://doi.org/10.1117/12.273601

KEYWORDS: Teeth, Laser ablation, Semiconductor lasers, Dental caries, Natural surfaces, Laser dentistry, Temperature metrology, Laser tissue interaction, Scanning electron microscopy, Laser irradiation

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Proceedings Article | 30 September 1996 Paper

LD-pumped Q-switched self-frequency-doubling laser

Yujing Huo, Peter Dekker, Judith Dawes, James Piper, Zibiao Wei, Shufang He, Pu Wang, Baoshing Lu

Proceedings Volume 2889, (1996) https://doi.org/10.1117/12.253278

KEYWORDS: Q switched lasers, Crystals, Laser applications, Laser crystals, Absorption, Pulsed laser operation, Continuous wave operation, Q switching, Acousto-optics, Mirrors

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Proceedings Article | 19 January 1996 Paper

Laser-activated protein bands for peripheral nerve repair

Antonio Lauto, Rodney Trickett, Richard Malik, Judith Dawes, Earl Owen

Proceedings Volume 2623, (1996) https://doi.org/10.1117/12.230350

KEYWORDS: Nerve, Laser welding, Proteins, Axons, Semiconductor lasers, Laser tissue interaction, Surgery, In vivo imaging, Action potentials, Electrodes

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Proceedings Article | 12 May 1995 Paper

Laser-activated protein solder for peripheral nerve repair

Rodney Trickett, Antonio Lauto, Judith Dawes, Earl Owen

Proceedings Volume 2395, (1995) https://doi.org/10.1117/12.209075

KEYWORDS: Nerve, Laser welding, Proteins, Semiconductor lasers, Surgery, Laser vision correction, Laser therapeutics, Action potentials, Laser tissue interaction, Electrodes

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Showing 5 of 18 publications

Conference Committee Involvement (1)

SPIE Nanophotonics Australasia 2017

10 December 2017 | Melbourne, Australia

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