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Jan 2011- April 2015 University College Dublin, Ireland

Worked as a postgraduate research student in the advanced optical imaging group.
• Designed and simulate a signal-based adaptive optics (AO) system for multiphoton microscopy (published in the Journal of European Optical Society),
• Developed a programme by using LabVIEW and MATLAB to control that AO system,
• Demonstrated experimentally a digital phase-shifting point diffraction interferometer (published in Optics Letters),
• Implemented experimentally an adaptive Hartmann-Shack wavefront sensor (published in the Journal of Biomedical Optics),
• Optimized the parameters (i.e. pinhole size, aberration magnitude, number of repetitions and correction steps) numerically for the signal-based AO by using MATLAB (published in the Journal of Modern Optics),
• Presented my research works in several international conferences.

April 2010- Aug 2010 Philips Healthcare, Eindhoven, Netherlands

Worked as a research intern at the Minimally Invasive Healthcare Department, Philips research Laboratories, Eindhoven, Netherlands.
• Investigated theoretical models to deduce physiological parameters from tissue samples based on reflectance spectroscopy,
• Validated the theoretical models with experiments,
• Improved the analytical software for data analysis,

Aug 2009 – Mar 2010 University of Twente, Netherlands

Completed my Master’s thesis in the Nanobiophysics group, University of Twente, Netherlands.
• Characterized the quantum efficiency of spectrally overlapping dyes that coexist in various spectrally different states by manipulating the local density of optical states (LDOS),
• Conducted absorption and emission spectroscopy of different fluorescent dyes,
• Prepared dye solutions of different concentrations and gained wet lab experiences
• Operated time correlated single photon counting (TCSPC) system to measure fluorescence lifetime of the dyes.

April 2006 – Mar 2007 Shahjalal University of Science and Technology, Bangladesh

As part of my undergraduate project at the department of physics:
• Investigated Iridium Complex (Ir(pppy)3) spectrally from the absorption, fluorescence and phosphorescence spectra,
• Explored the time resolved photoluminescence spectra of the Iridium Complex to obtain the decay time of the emission from the triplet excited state.


Peer reviewed articles:
1. Md. Atikur Rahman Jewel, Vyas Akondi, Brian Vohnsen, “Optimization of sensing parameters for a confocal signal-based wavefront corrector in microscopy”, J. Mod. Opt. (DOI: 10.1080/09500340.2015.1007100) (2015).

2. Vyas Akondi, A. R. Jewel, and Brian Vohnsen, “Closed-loop adaptive optics using a spatial light modulator for sensing and compensating of optical aberrations in ophthalmic applications”, J. Bio. Opt. 19(9), 096014, September (2014).

3. Vyas Akondi, A. R. Jewel, and Brian Vohnsen, “Digital phase-shifting point diffraction interferometer”, Opt. Lett. 39, 1641-1644 (2014).

4. A. R. Jewel, V. Akondi, B. Vohnsen, “A direct comparison between a MEMS deformable mirror and a liquid crystal spatial light modulator in signal-based wavefront sensing”, J. Europ. Opt. Soc. Rap. Public. 8, 13073 (2013).

Conference publications:

1. JiaJun Li, Ning-Jiun Jan, Md. Atikur Rahman Jewel, Denise Valente, Jonathan Grimm, Brian Vohnsen, Ian A. Sigal, “Comparison of Collagen Fibrillar Architecture of the Lamina Cribrosa using Polarization-Tunable Second-Harmonic Optical Microscopy and Polarimetric Optical Microscopy”, ARVO Annual Meeting, Denver, Colorado, USA; May 03-07 (2015). (accepted)

2. A. R. Jewel, V. Akondi, B. Vohnsen, “3-D Analysis of pinhole size optimization for a confocal signal-based wavefront sensor”, Frontiers in Optics, Rochester, Tucson, Arizona, USA; October 19-23 (2014).

3. Vyas Akondi, A. R. Jewel, and Brian Vohnsen, “Closed-loop adaptive optics using a single spatial light modulator for ophthalmic applications”, Visual Physiology Optics, Wroclaw, Poland; August 25-27 (2014).

4. Md. Atikur Rahman Jewel, Vyas Akondi and Brian Vohnsen, “On pinhole size optimization in wavefront sensorless adaptive optics”, Adaptive Optics: Methods, Analysis and Applications, Arlington, Virginia United States; June 23-27 (2013).

5. Vyas Akondi, Sara Castillo, Md. Atikur R. Jewel, and Brian Vohnsen, “Digital pyramid wavefront sensor”, Adaptive Optics: Methods, Analysis and Applications, Arlington, Virginia United States; June 23-27 (2013).

6. Md. Atikur R. Jewel and Brian Vohnsen, “Confocal Signal-based Wavefront Sensing”, Frontiers in Optics, Rochester, NY, USA; October 14-18 (2012).

7. Md. Atikur R. Jewel and Brian Vohnsen, “Wavefront correction by a Confocal Signal-based Wavefront Sensor”, Optoinformatics, Maynooth, Ireland; June 14-16 (2012).

8. Brian Vohnsen, JiaJun Li, and Atikur Jewel, “Second-Harmonic Microscopy for Cornea Collagen Fibril Imaging: Theoretical and Experimental Optimization”, Frontiers in Optics, San Jose, CA, USA; October 16-20 (2011).



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