Giving to CREOL CREOL, The College of Optics & Photonics
Joshua Bradford

CREOL Alum: Joshua Bradford

Education
2018 PhD in Optics, advisor: Martin C. Richardson & Lawrence Shah
2016 MS in Optics, advisor: Martin C. Richardson

Employment
Current Position: Research Scientist, University of Central Florida, College of Optics & Photonics
2010 - 2018: Graduate Research Assistant, University of Central Florida, College of Optics & Photonics
 
Publications
2018
A. Abdulfattah, A. Sincore, J. Bradford, N. Bodnar, J. Cook, L. Shah, and M. Richardson
"700 µJ, 100 ns, 20 kHz pulses from a 1.5 m Thulium-doped fiber amplifier"
SPIE Conference on Defense and Commercial Laser Technologies, Technology for Defense and Security
2018
J. Cook, J. Bradford, J. Antonio-Lopez, L. Shah, R. Amezcua Correa, and M. Richardson
"Current progress on high power Yb:fiber amplifiers"
DEPS Annual Symposium Directed Energy Science and Technology, Oxnard, CA,
2018
J. Bradford, J. Cook, L. Shah, and M. Richardson
"Demonstration of passively-cooled, high-power Yb fiber amplifier"
SPIE Photonics West, San Francisco, CA
2018
A. Sincore, J. Cook, J. Bradford, N. Bodnar, and M. Richardson
"Experimental investigation on varying spectral bandwidth when amplifying a pulsed super-fluorescent 2 µm source in Tm:fiber"
SPIE Photonics West, San Francisco, CA
2018
Joshua Bradford
"Fiber Optimization for Operation Beyond Transverse Mode Instability Limitations"
A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in CREOL, The College of Optics and Photonics at the University of Central Florida Orlando
2018
P. Roumayah, J. Bradford, J. Cook, J. Enrique Antonio-Lopez, R. Amezcua Correa, and M. Richardson
"High average power pulsed multi-mode Raman fiber laser in graded index fiber"
SPIE Photonics West, San Francisco, CA
2018
A. Sincore, J.D. Bradford, J. Cook, L. Shah, and M.C. Richardson
"High average power Thulium-doped silica fiber lasers: review of systems and concepts"
IEEE Journal of Selected Topics In Quantum Electronics, 24(3), 0901808
2018
Ali Abdulfattah, Stefan Gausmann, Alex Sincore, Joshua Bradford, Nathan Bodnar, Justin Cook, Lawrence Shah, Martin Richardson
"Influence of Temperature on Nanosecond Pulse Amplification in Thulium Doped Fiber Lasers"
IOP Publishing, Journal of Physics: Conference Series
2018
P. Roumayah, A. Sincore, J. Cook, J Bradford, J.E. Antonio-Lopez, S Gausmann, D. Shin, A. Abdulfattah, L. Shah, A. Schülzgen, R. Amezcua Correa, and M. Richardson
"Progress on high-power Yb, Tm and Raman fiber lasers"
Laser Technology for Defense and Security
2018
J. Bradford, J. Cook, A. Sincore, L. Shah, R. Amezcua Correa, A. Schülzgen, and M. Richardson
"Studying the Limits to Single Mode Operation in Yb Fiber Lasers"
DEPS Annual Directed Energy Science and Technology Symposium, Oxnard, CA
2017
A. Abdulfattah, S. Gausmann, A. Sincore, J. Bradford, N. Bodnar, J. Cook, L. Shah, and M.C. Richardson
"Influence of temperature on nanosecond pulse amplification in thulium fiber lasers"
IHSCICONF IOP JPC, College of education for pure science – Ibn Al Haitham, University of Baghdad, Iraq
2017
L. Shah, P. Roumayah, N. Bodnar, J.D. Bradford, D. Maukonen, and M.C. Richardson
"Mobile terawatt laser propagation facility"
SPIE 10082, Solid State Lasers XXVI: Technology and Devices
2017
A. Sincore, N. Bodnar, J. Bradford, A. Abdulfattah, L. Shah, and M.C. Richardson
"Nonlinear processes associated with the amplification of MHz-linewidth laser pulses in single-mode Tm: fiber"
Fiber Lasers XIV: Technology and Systems, Proceedings of SPIE, 10083
2017
A. Sincore, N. Bodnar, J. Bradford, A. Abdulfattah, L. Shah, and M.C. Richardson
"Sbs threshold dependence on pulse duration in a 2053 nm single-mode fiber amplifier"
Journal of Lightwave Technology, 35(18), pp. 4000-4003
2016
A. Sincore, J. Cook, W. Li, E. Johnson, J. Bradford, L. Shah, and M.C. Richardson
"Beam propagation of Gaussian and annular beams at 2 um in presence of thermal lensing"
CLEO, San Jose, CA, June, paper JTh2A.77
2016
S. Wittek, R. Bustos Ramirez, J. Alvarado Zacarias, Z. Sanjabi Eznaveh, G. Lopez Galmiche, J. Bradford, J.E. Antonio-Lopez, L. Shah, and R. Amezcua-Correa
"High-power mode-selective amplification in large mode area ytterbium-doped fiber using photonic lanterns"
CLEO, San Jose 2016, paper SM2Q.3
2016
S. Gausmann, A. Abdulfattah, A. Sincore, J. Bradford, L. Shah, and M.C. Richardson
"Influence of wavelength and temperature on nanosecond pulse amplification in Tm:fiber"
SPIE Defense, Sensing and Security, Baltimore, MD, April
2016
L. Shah, N. Bodnar, P. Roumayah, B. Webb, J. Bradford, and M.C. Richardson
"Integrated pulse stretchers for high-energy CPA and OPCPA systems"
SPIE 9730, Components and Packaging for Laser Systems II, 97300V
2016
M.C. Richardson, Eric Johnson, Nicholas Barbieri, Matthieu Baudelet, Shermineh Rostami, Lawrence Shah and Joshua Bradford
"Introducing spatial phase control to high power laser beams"
SPIE Photonics North, Quebec City, Canada, May 24-26
2016
S. Wittek, R. Bustos Ramirez, J. Alvarado Zacarias, Z. Sanjabi Eznaveh, J. Bradford, G. Lopez Galmiche, D. Wang, W. Zhu, J. Antonio-Lopez, L. Shah, and R. Amezcua-Correa
"Mode-selective amplification in a large mode area Yb-doped fiber using a photonic lantern"
Optics Letters 41, pp. 2157-2160
2016
V. Smirnov, O. Mokhun, A.L. Glebov, L.B. Glebov, A. Sincore, J. Bradford, L. Shah, and M.C. Richardson.
"Volume Bragg gratings for 2-micron laser systems"
SPIE Photonics West, San Francisco, CA, February
2015
L. Shah, R. Amezcua-Correa, J. Antonio-Lopez, J. Bradford
"'Coherent' photonic lanterns for fiber lasers"
08/10/2015
2015
L. Shah, R.A. Sims, P. Kadwani, C.C.C. Willis, J.B. Bradford, A. Sincore, M.C. Richardson
"High-power spectral beam combining of linearly polarized Tm:fiber lasers"
Applied Optics 54(4), pp.757-762
2015
C.C.C. Willis, J.D. Bradford, J. Haussermann, E. McKee, E. Maddox, L. Shah, R. Gaume, M.C. Richardson
"Rapid thermo-optical quality assessment of laser gain media"
Optical Materials Express 5(6), pp.1389-1398
2015
J. Bradford, P. Roumayah, A. Sincore, N. Bodnar, A. Abdulfattah, L. Shah, M.C. Richardson
"Thermal Mode Instability"
CREOL Industrial Affiliates Symposium
2014
Benjamin Webb, Joshua Bradford, Khan Lim, Nathan Bodnar, Andreas Vaupel, Erik McKee, Matthieu Baudelet, Magali M Durand, Lawrence Shah, Martin Richardson
"Compact 10 TW laser to generate multi-filament arrays"
Frontiers in Optics 2014, OSA Technical Digest (online) (Optical Society of America, 2014), paper SM1F.6 (2014)
2014
Benjamin Webb, Joshua Bradford, Khan Lim, Nathan Bodnar, Andreas Vaupel, Erik McKee, Matthieu Baudelet, Magali M Durand, Lawrence Shah, Martin Richardson
"Compact 10 TW laser to generate multi-filament arrays"
Frontiers in Optics 2014; San Jose, CA; 10/18-22, 2014.
2014
B. Webb, J. Bradford, K. Lim, N. Bodnar, A. Vaupel, E. Mckee, M. Baudelet, M. Durand, L. Shah, M. Richardson
"Compact 10 TW laser to generate multi-filament arrays"
CLEO Science and Innovation 2014, paper SM1F.6
2014
Joshua D. Bradford, Konstantin L. Vodopyanov, Peter G. Schunemann, Lawrence Shah, Martin C. Richardson
"Direct measurement of thermal lensing in GaAs induced by 100 W Tm:fiber laser"
SPIE Photonics West, LASE. San Francisco, CA, paper 8964-43
2014
L. Sisken, N. Gerlich, J.D. Bradford, A.Q. Abdulfattah, L. Shah, M.C. Richardson
"Examination of laser-induced heating on multi-component chalcogenide glass"
SPIE Infrared Technology and Application XL 2014, paper 9070-1A
2014
N. Barbieri, Z. Hosseinimakarem, K. Lim, M. Durand, B. Webb, J. Bradford, E. McKee, N. Bodnar, L. Shah, M. Baudelet, E. Johnson, M. Richardson
"Helical filaments"
CLEO-QELS Fundamental Science 2014, paper FTu3D.6
2014
Nicholas Barbieri, Zahra Hosseinimakarem, Khan Lim, Magali Durand, Benjamin Webb, Joshua Bradford, Erik McKee, Nathan Bodnar, Lawrence Shah, Matthieu Baudelet, Eric Johnson, Martin Richardson
"Helical filaments"
CLEO: Science and Innovations, FTu3D.6 (2014)
2014
M.C. Richardson, M. Masnavi, L. Shah, J. Szilagyi, J.D. Bradford, H. Parchamy, N. Bodnar, Y. Jang
"Potential of solid state laser-driven EUV sources for HVM lithography"
SPIE Advanced Lithography V 2014, paper 9048-77
2014
M.C. Richardson, M. Masnavi, L. Shah, J. Szilagyi, J.D. Bradford, H. Parchamy, N. Bodnar, Y. Jang
"Potential of solid state laser-driven EUV sources for HVM lithography"
SPIE Advanced Lithography 2014: Extreme Ultraviolet (EUV) Lithography V, paper 9048-77
2014
L. Shah, C. Gaida, M. Gebhart, A. Sincore, J.D. Bradford, N. Gehlich, I. Mingareev, M. Richardson
"Thulium fiber laser and application development"
SPIE Laser Technology for Defense and Security X 2014, paper 9091-0H
2013
L. Shah, R.A. Sims, P. Kadwani, C. Gaida, M. Gebhardt, J. Bradford, A. Sincore, C. Willis, M. Richardson
"2 um fiber lasers"
International Symposium on Photoelectronic Detection and Imaging , Conference 1: High power lasers and applications
2013
L. Shah, K. Vodopyanov, P. Schunemann, J Bradford, A. Sincore, and M. Richardson
"CW Tm:fiber lasers for THz generation"
International Symposium on Photoelectronic Detection and Imaging, Beijing, China, June
2013
L. Sisken, J. Bradford, P. Wachtel, B. Gleason, D. Musgraves, L. Shah, M. Richardson, and K. Richardson
"Distribution of photo-thermal heating and effects in chalcogenide glass"
Frontiers in Optics, paper FTh4E.1
2013
Christina C. C. Willis, Erik McKee, Pascal Böswetter, Alex Sincore, Jens Thomas, Christian Voigtländer, Ria G. Krämer, Joshua D. Bradford, Lawrence Shah, Stefan Nolte, Andreas Tünnermann, and Martin Richardson
"Highly polarized all-fiber thulium laser with femtosecond-laser written fiber Bragg gratings"
Optics Express 21, pp. 10467-10474
2013
L. Shah,T.S. McComb, R.A. Sims, P. Kadwani, C.C.C. Willis, J.B. Bradford, A. Sincore, C. Gaida, M. Gebhardt, A. El-Sherif, N. Modsching, T. Bonhoff, T. Ferhat, M. Ramme, I. Mingareev, M. Richardson
"Mid-IR Fiber Lasers and Applications"
Townes Laser Institute Winter Symposium 2013
2013
B. Webb, J. Bradford, K. Lim, A. Vaupel, N. Bodnar, L. Shah, and M. Richardson
"Optimization of Multi-pass Amplifiers in TW-Class Ti:Sapphire Chirped Pulse Amplification Systems"
Frontiers in Optics and Laser Science XXIX, Orlando, FL
2013
B. Webb, J. Bradford, K. Lim, L. Shah, M. Richardson
"Optimization of multi-pass amplifiers in TW-class Ti:sapphire chirped pulse amplification systems"
Laser Science, paper FM3A.3
2013
L. Shah, M. Richardson, T.S. McComb, R.A. Sims, P. Kadwani, C.C.C. Willis, J.B. Bradford, A. Sincore, C. Gaida, M. Gebhardt, A. El-Sherif, N. Modsching, J. Limpert, A. Tunnermann, T. Gotschall, J. Rothhardt, S. Breitkof, S. Hadrich, C. Jauregui, M. Kienel, A. Klenke, M. Baumgartl, M. Krebs, R. Lehneis, H.-J. Otto, F. Jasen, T. Eidam, A. Steinmetz, F. Stutzki, S. Demmler, C. Jocher
"Prospects of Femtosecond Fiber Lasers for Filamentation"
Fundamentals and Applications of Laser Filaments 2013
2013
J.D. Bradford, C.C.C. Willis, S. Danto, L. Shah, J.D. Musgraves, K. Richardson, and M. Richardson
"Shack-Hartmann thermal lensing characterization of mid-IR materials"
Frontiers in Optics , paper FTh1F.5
2012
L. Shah, R.A. Sims, P. Kadwani, C.C. Willis, J.D. Bradford, Z. Roth, A.J. Pung, M.K. Poutous, E.G. Johnson, M.C. Richardson
"Integrated 100 W thulium fiber MOPA system"
SPIE Laser Technology for Defense and Security VIII, paper: 8381-35, Baltimore (USA)
2012
L. Shah, R. A. Sims, P. Kadwani, C. C. C. Willis, J. B. Bradford, A. Pung, M. K. Poutous, E. G. Johnson, and M. C. Richardson
"Integrated Tm:fiber MOPA with polarized output and narrow linewidth with 100 W average power"
Optics Express vol 20, no 18, pp. 20558-20563
2012
L. Shah, A. Sims, P. Kadwani, J.D. Bradford, C.C. Willis, M. Richardson
"Progress on Tm-doped fiber lasers"
Specialty Optics Fibers - SOF, paper STu4F.1, Colorado Springs (USA)
2011
M. Hemmer, A. Vaupel, M. Ramme , C. Willis, J. Bradford, V. Smirnov, L. Shah, L. B. Glebov, M. C. Richardson
"A VBG-Stabilized Narrow Linewidth, Spectrally Tunable, Yb:YAG Thin-Disk Laser"
Conference on Lasers and Electro-Optics - CLEO, paper CWP3
2011
Martin Richardson, Lawrence Shah, R. Andrew Sims, Christina C.C. Willis, Pankaj Kadwani, Joshua Bradford
"High Power Thulium Fiber Lasers "
OSA Topical Meeting on Speciality Optical Fibers, Toronto, Canada, June 2011
2011
L. Shah, R. Sims, C. Willis, P. Kadwani, J. Bradford, and M. C. Richardson
"High power thulium fiber lasers"
Fiber Laser Applications, Optical Society of America, Istanbul, Turkey
2011
Christina C. C. Willis, Joshua D. Bradford, Lawrence Shah, Martin Richardson
"Measurement of Wavefront Distortions Resulting from Incidence of High-Power 2 µm Laser Light"
Solide State and Diode Laser Technology Review, Directed Energy Professional Society; Santa Fe, NM, USA
2011
Christina C.C. Willis, Joshua Bradford, Lawrence Shah, and Martin C. Richardson
"Measurement of wavefront distortions resulting from incidence of high-power 2 um laser light"
CLEO:2011 - Conference on Lasers and Electro-Optics (CLEO)
2011
Christina C. C. Willis, Joshua D. Bradford, R. Andrew Sims, Lawrence Shah, Martin Richardson
"Monolithic Polarization Maintaining Thulium Fiber Laser using High and Low Reflectivity FBGs"
Fiber Laser Applications, Optical Society of America, Istanbul, Turkey
2011
Christina C. C. Willis, Joshua D. Bradford, Robert Sims, Lawrence Shah, Martin Richardson, Jens Thomas, R. Becker, Christian Voigtlander, Andreas Tunnermann, and Stephen Nolte
"Monolithic, narrow linewidth, polarization maintaining, thulium fiber laser using femtosecond written fiber Bragg grating"
SPIE Europe Security and Defence, Orlando, FL, USA
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