Giving to CREOL
CREOL, The College of Optics & Photonics
Absar Ulhassan

CREOL Alum: Absar Ulhassan

Education
2015 MS in Optics, advisor: Demetrios Christodoulides
2012 B.S. in Electrical Engineering at Lahore University of Management Sciences

Employment
Current Position: Graduate Research Assistant, University of Central Florida, College of Optics & Photonics
 
Publications
2017
Absar U. Hassan, Bo Zhen, Marin Soljacic, Mercedeh Khajavikhan, and Demetrios N. Christodoulides
"Dynamically Encircling Exceptional Points: Exact Evolution and Polarization State Conversion"
Physical Review Letters, 118(9), 093002
2017
Hossein Hodaei, Absar U. Hassan, Steffen Wittek, Hipolito Garcia-Gracia, Ramy El-Ganainy, Demetrios N. Christodoulides, and Mercedeh Khajavikhan
"Enhanced sensitivity at higher-order exceptional points"
Nature 548, 187-191
2017
H. Hodaei, A.U. Hassan, H. Garcia-Gracia, W.E. Hayenga, D.N. Christodoulides, and M. Khajavikhan
"Enhanced sensitivity in PT-symmetric coupled resonators"
SPIE 10090, Laser Resonators, Microresonators, and Beam Control XIX
2017
A. Kazemi Jahromi, A. U. Hassan, D. Christodoulides, and A. F. Abouraddy
"Observation of a Parity-Time-Symmetry Phase Transition in a Fiber Cavity"
Conference on Lasers and Electro-Optics, paper JTu5A.51
2017
A.U. Hassan, B. Zhen, M. Soljacic, M. Khajavikhan, and D. Christodoulides
"Polarization state conversion through exceptional point encirclement"
Conference on Lasers and Electro-Optics, paper FTh3D.1
2017
H. Hodaei, A. U. Hassan, D. Christodoulides, and M. Khajavikhan
"PT-symmetric Micro-resonators: High Sensitivity at Exceptional Points"
Conference on Lasers and Electro-Optics, paper FTh3D.2
2017
A. K. Jahromi, A. U. Hassan, D. N. Christodoulides, and A. F. Abouraddy
"Statistical parity-time-symmetric lasing in an optical fibre network"
Nat. Commun. 8, 1359 (2017)
2017
J. Ren, H. Hodaei, G. Harari, A. U. Hassan, W. Chow, M. Soltani, D. N. Christodoulides, M. Khajavikhan
"Ultrasensitive micro-scale parity-time-symmetric ring laser gyroscope"
Optics Letters 42, 1556-1559
2016
H. Hodaei, A.U. Hassan, W.E. Hayenga, M.A. Miri, D.N. Christodoulides, and M. Khajavikhan
"Dark-state lasers: mode management using exceptional points"
Optics Letters 41(13), pp.3049-3052
2016
H. Hodaei, A.U. Hassan, J. Ren, W.E. Hayenga, M.A. Miri, D.N. Christodoulides, and M. Khajavikhan
"Design considerations for single mode microring lasers using parity-time-symmetry"
IEEE, Journal of Selected Topics in Quantum Electronics
2016
A.U. Hassan, H. Hodaei, M.-A. Miri, M. Khajavikhan, and D.N. Christodoulides
"Integrable nonlinear parity-time-symmetric optical oscillator"
Physical Review E, 9394), 042219
2016
M. Heinrich, H. Hodaei, M.A. Miri, A.U. Hassan, W.E. Hayenga, D.N. Christodoulides, M. Khajavikhan
"Non-Hermitian microring systems: PT-symmetric lasers, mode management and enhanced emission efficiency"
Advanced Electromagnetic Materials in Microwaves and Optics, September
2016
A.U. Hassan, H. Hodaei, M.A. Miri, M. Khajavikhan, and D.N. Christodoulides
"Nonlinear reversal of PT-symmetric phase transition in a system of coupled micro-ring cavities"
SPIE 9920, Active Photonic Materials VIII, September
2016
A. K. Jahromi, A. U. Hassan, D. N. Christodoulides, and A. F. Abouraddy
"Observation of robust statistical parity-time symmetry breaking in ultra-long cavities"
29th Annual Conference of the IEEE Photonics Society, Waikoloa, Hawaii, 2 - 6 October
2016
A.U. Hassan, H. Hodaei, M.A. Miri, D.N. Christodoulides, and M. Khajavikhan
"Reversing the transition from an unbroken to a broken phase in a PT-symmetric dimer laser"
CLEO, San Jose, CA, June, paper FTh1A.1
2016
A. K. Jahromi, A. U. Hassan, D. N. Christodoulides, and A. F. Abouraddy
"Robust statistical parity-time symmetric lasers in fiber cavities"
Frontiers in Optics, paper JW4A.100
2016
H. Hodaei, M.A. Miri, A.U. Hassan, W.E. Hayenga, M. Heinrich, D.N. Christodoulides, and M. Khajavikhan
"Single mode lasing in transversely multi-moded PT-symmetric microring resonators"
Laser & Photonics Reviews 10(3), pp.494-499
2016
H. Hodaei, A.U. Hassan, J. Ren, W.E. Hayenga, D.N. Christodoulides, and M. Khajavikhan
"Ultra-sensitive PT-symmetric coupled cavities"
CLEO, San Jose, CA, June, paper FTh1A.3
2015
A. Hassan, H. Hodaei, W. Hayenga, M. Khajavikhan, D. Christodoulides
"Enhanced sensitivity in parity-time-symmetric microcavity sensors"
OSA Advanced Photonics Conference, Boston, Massachusetts, SeT4C.3
2015
A.U. Hassan, H. Hodaei, M.A. Miri, M. Khajavikhan, D.N. Christodoulides
"Nonlinear reversal of the PT-symmetric phase transition in a system of coupled semiconductor microring resonators"
Physical Review A 92(6), pp.063807
2015
H. Hodaei, M.A. Miri, A.U. Hassan, W.E. Hayenga, M. Heinrich, D.N. Christodoulides, M. Khajavikhan
"Parity-time-symmetric coupled microring lasers operating around an exceptional point"
Optics Letters 40(21), pp.4955-4958
2015
A. U. Hassan, N. Nye, M. Khajavikhan, R. El-Ganainy. D. N. Christodoulides
"Ultra-sensitivity using higher order exceptional points"
The Ninth IMACS International Conference on Nonlinear Evolution Equations and Wave Phenomena: Computation and Theory, Georgia-Athens, Session 31
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