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College of Optics & Photonics

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Professor of Optics, MMAE, ECE and Physics
Laser Advanced Materials Processing
Email
Workakar@creol.ucf.edu
Phone
Office407-823-6921
Fax407-658-6880
Locations
OfficeCREOL 284
Links
My Resume
Awards & Honors
2005 Elected to the Board of Directors of the Laser Institute of America       more»
2002 TIP (UCF’s Teaching Incentive Program) Award      more»
2001 ICALEO’01 Student Paper Award Competition: Yonggang Li      more»
2000 Fellow of the Laser Institute of America     
2000 ICALEO’00 Student Paper Award Competition: Jihua Du      more»
2000 Fifth Annual Tibbetts Award      more»
2000 American Welding Society award Henry Grajon Prize: Jian Xie      more»
1999 First Prize Student Paper Award Competition: Jihua Du      more»
1999 ICALEO’99 Student Paper Award Competition: Franz Josef Kahlen      more»
Key Publications and Presentations
Refereed Papers
2006 D. Zeng, W. P. Latham and A. Kar "Shaping of annular laser intensity profiles and their thermal effects for optical trepanning" Optical Engineering, Vol. 45, 2006, 01301
2005 D. Zeng, W. P. Latham and A. Kar "Temperature distribution due to annular beam heating" Journal of Laser Applications, Vol. 17, 2005, pp. 256 – 262.
2005 D. Zeng, W. P. Latham and A. Kar "Two-dimensional model for melting and vaporization during optical trepanning" Journal of Applied Physics, Vol. 97, 2005, 104912.
2005 I.A. Salama, N. R. Quick and A. Kar "Microstructural Effects on Electrical Resistance in Laser-Treated Silicon Carbide" Journal of Materials Science, 2005 (in press)
2005 I.A. Salama, N.R. Quick, and A. Kar "Laser Direct Writing and Doping of Diamond-like Carbon, Polycrystalline Diamond and Single Crystal Silicon Carbide" Journal of Laser Applications, Vol. 16, 2004, pp. 92-99
2005 Z. Tian, N. R. Quick and A. Kar "Characteristics of 6H-Silicon Carbide PIN Diodes Prototyping by Laser Doping" Journal of Electronic Materials, Vol. 34, 2005, pp. 430-438
2005 Z. Tian, N. R. Quick and A. Kar "Effects of Different Laser Sources and Doping Methods Used to Dope Silicon Carbide" Acta Materialia, Vol. 53, 2005, pp. 2835-2844
2004 A. Jocelyn, A. Kar, M. Jonik, A. Keevil, M. Ackerman, J. Way and T. Flower "Use of lasers in the process of superplastic forming and diffusion bonding" Materials Science Forum, Vols. 447-448, 2004, pp. 533-540
2004 Y. Chen, B. Chen, M.K.R. Patel, A. Kar and M. Bass "Calculation of Thermal Gradient Induced Stress Birefringence in Slab Lasers - II" IEEE J. Quantum Electron., Vol. 40, 2004, pp.917-927
Patents
2005 N.R. Quick and A. Kar "Optical Device and Method of Making" U.S. Patent (submitted, 2005)
2004 N.R. Quick and A. Kar "Laser-Assisted Nano-Deposition" U.S. Patent (submitted, 2004)
2004 N.R. Quick, A. Kar and I.A. Salama "Process for Fabricating Semiconductor Component" US Patent (submitted, 2004)
2004 N.R. Quick, A. Kar, Y. Li and R.R. McNeice "Apparatus and Method for Drawing Continuous Fiber" 2004 (US Patent No. 6,732,562)
more...
Research
Fabrication of long nanowires for integrated nanodevice fabrication.
Laser Drilling 170-Micron Diameter Holes
Laser-Doped Nanostructuring in SiC for Deep Green Light Emitting Diodes
Nanoscopic Optical Sensors
Novel Erosion Resistant Coating For High Temperature Composites
Ultrahigh Temperature Optical Sensing