• Paper showing flat microscope objective (NA=0.9) among top cited in Optica !

A paper that I co-authored with Prof. Menon's group at Utah, showing a NA=0.9, diameter > 4mm flat lens was among the top cited papers in Optica since October 2020. The paper is freely available here. Congratulations to all the co-authors!

• BBC Article on Flat Lenses: Our work on flat lenses was recently highlighted in a BBC news article available here. It's exciting to see all the fantastic work on flat optics around the world! This work is in collaboration with the groups of Prof. Menon and Prof. Sensale-Rodriguez at Utah.

• Paper published in Optics Express: A paper in collaboration with Prof. Rajesh Menon's group has been accepted for publication in Optics Express (link), titled “Imaging from the visible to the longwave infrared via an inverse-designed flat lens ".

Here, we demonstrate chromatic correction of focal length over an extremely large bandwidth, from the visible (Vis: λ=0.45µm, blue) to the longwave infrared (LWIR: λ=15µm) wavelengths using a single diffractive surface, i.e., a multi-level diffractive lens (MDL) with a thickness of ≤ 10µm, diameter of ∼1mm, and focal length of 18mm.

• Presenting at OSA Biophotonics conference: My paper was accepted for presentation at the OSA Biophotonics Conference. I will be presenting it on April 14. The title of the paper is "Full-frame Snapshot Hyperspectral Imaging for Biomedical Applications enabled by Diffractive Optics and Adaptive Neural Networks ".

• Work on Flat Lenses selected in Optics in 2020 special issue of OPN: Our work in Prof. Rajesh Menon's group on flat lenses was featured in the OSA Optics & Photonics News annual Optics in 2020 issue. This issue highlights some of the best works in optics and photonics for that year.

Also featured by Utah College of Engineering here.

open-access link to article

• Paper published in Microelectronics Journal: A paper that I co-authored with Utah graduate student Jia Wei and in collaboration with Prof. Berardi Sensale-Rodriguez's group has been accepted for publication in Elsevier Microelectronics Journal (link), titled “Ammonia optical gas sensing based on graphene-covered silicon micro-ring resonators: A design space exploration".

• Paper published in OSA Continuum: A paper that I co-authored with Utah graduate student Monjurul Meem and in collaboration with Prof. Rajesh Menon's group has been accepted for publication in OSA Continuum (open-access link), titled “Free-form broadband flat lenses for visible imaging ”. This paper demonstrates a new type of flat lenses where the lens f/# and NA are decoupled.

• Paper published in OSA Continuum: A paper that I co-authored with Utah graduate student Sourangsu Banerji and in collaboration with Prof. Berardi Sensale-Rodriguez's group has been accepted for publication in OSA Continuum (open-access link), titled “Ultra-compact integrated photonic devices enabled by machine learning and digital metamaterials ”.

• 3 Papers accepted in OSA CLEO 2021: 3 papers in collaboration with Prof. Rajesh Menon and Prof. Berardi Sensale-Rodriguez's groups were accepted for presentation in OSA CLEO this year. These presentations will showcase our progress in the field of flat optics.

• Utah COE Seed Grant Award: Thrilled to receive the Utah College of Engineering Research Incentive Seed Grant award for 2021. I will be investigating techniques to develop tunable flat optics.

• Research Assistant Professorship: New job title! Started November 2020 at the department of Electrical and Computer Engineering at the University of Utah.

• Paper featured as Editor's Pick: My paper in collaboration with Prof. Rajesh Menon's group describing a multi-level diffractive microlens array was selected as Editor's Pick in the OSA Journal Optics Letters (open-access link).

• Paper published in Optics Letters: A paper that I co-authored with Prof. Rajesh Menon's group has been accepted for publication in OSA Optics Letters (open-access link), titled “Super-resolution imaging with an achromatic multi-level diffractive microlens array ".

• Paper published in Nano Communication Networks: A paper that I co-authored with Prof. Berardi Sensale-Rodriguez's group has been accepted for publication in Elsevier Nano Communication Networks journal OSA Optics Letters (link), titled “Machine learning enables design of on-chip integrated silicon T-junctions with footprint of 1.2 µm x 1.2 µm".

• Paper accepted in IRMMWTHz 2020: A paper in collaboration with Prof. Berardi Sensale-Rodriguez's groups was accepted for presentation in IRMMWTHz 2020 that will describe "Inverse designed flat optics for imaging applications in the IR and beyond " (link).

• Paper accepted in IEEE Photonics Congress 2020: A paper in collaboration with Prof. Berardi Sensale-Rodriguez's groups was accepted for presentation in the IEEE Photonics Congress 2020 that will describe "Ultra-compact Design of Power Splitters via Machine Learning" (link).

• Paper accepted in OSA Imaging Systems 2020: A paper in collaboration with Prof. Rajesh Menon's groups was accepted for presentation in the OSA Imaging Systems 2020 that will describe "Inverse Designed Flat Optics with Diffractive Lenses" (link).

• 5 Papers accepted in OSA CLEO 2020: 5 papers in collaboration with Prof. Rajesh Menon and Prof. Berardi Sensale-Rodriguez's groups were accepted for presentation in OSA CLEO this year. The papers discuss our works on flat optics and inverse designed Silicon nanophotonic devices. (link) (link) (link) (link) (link).

• Presentation at Optical Document Security conference 2020: Prof. Menon presented on our work at the Optical Document Security conference 2020. Utah graduate student Monjurul Meem collaborated with us on this work. It showcases applications of flat broadband holograms to optical document security.

• Most Downloaded paper in Optica in May: Our paper on extreme depth of focus flat lenses was highlighted again as one of the most downloaded papers in May in the journal OSA Optica. (open-access link).

• International Day of Light is May 16! #SEETHELIGHT is a worldwide message encouraging all to join the conversation and celebrate the importance of the science of light and light-based technologies in our lives.

• Most Downloaded paper in Optica in April: A paper that I have co-authored with Prof. Rajesh Menon's group has been highlighted as one of the most downloaded papers in April in the journal OSA Optica. The paper describes a flat lens exhibiting extreme depth of focus, orders of magnitude larger than a conventional lens (open-access link).

• Most Downloaded paper in OSA Continuum in March: A paper that I have co-authored with Prof. Rajesh Menon's group has been highlighted as one of the most downloaded papers in March in the journal OSA Continuum. The paper describes a flat lens working in the Short Wave Infrared (open-access link).

• 2 Most Downloaded papers in Optica in March: 2 papers that I have co-authored with Prof. Rajesh Menon's group have been highlighted as among the most downloaded papers in March in the journal OSA Optica. The papers describe a flat lens exhibiting extreme depth of focus (open-access link), and a high-NA, large area flat lens (open-access link).

• Third paper published in OSA Optica: A third paper that I have co-authored with Prof. Rajesh Menon's group has been published in the prestigious OSA journal Optica. The paper describes a "Large-area, high-numerical-aperture multi-level diffractive lens via inverse design" (open-access link).

• Media articles on EDOF paper: My paper in collaboration with Prof. Menon and Prof. Sensale-Rodriguez's groups at Utah ECE on "Extreme-Depth-of-Focus Imaging with a flat lens" has been featured in a number of media articles.

Press release from OSA here.

Read more here.

• Paper published in Sensors and Actuators B: A paper that I have co-authored with Prof. Carlos H. Mastrangelo's group at Utah ECE, titled “VOC sensing using batch-fabricated temperature compensated self-leveling microstructures" has been accepted for publication in the journal Sensors and Actuators B: Chemical (open-access link). Thanks to Rugved Likhite and Aishwaryadev Banerjee, the lead authors of this article and Prof. Mastrangelo.

• Second paper published in OSA Optica: A paper that I have co-authored with Prof. Rajesh Menon's group has been accepted for publication in the prestigious OSA journal Optica. The paper describes "Extreme-Depth-of-Focus Imaging with a flat lens" - a flat lens exhibiting extreme depth of focus, orders of magnitude larger than a conventional lens (open-access link). Thanks to Utah graduate students and colleagues Sourangsu Banerji and Monjurul Meem.

• Paper featured as Editor's Pick: My paper in collaboration with Prof. Rajesh Menon's group describing multi-color multi-plane holography was selected as Editor's Pick in the OSA Journal Applied Optics (open-access link).

Editor’s Picks serve to highlight articles with excellent scientific quality and are representative of the work taking place in a specific field!

• Paper published in OSA Applied Optics: A paper that I have co-authored with Prof. Rajesh Menon's group, titled “Multi-level micro-optics enables broadband, multi-plane computer-generated holography" has been accepted for publication in the OSA Applied Optics journal. This paper demonstrates applications of our high-efficiency multilevel diffractive optics to generating versatile colorful holograms. (open-access link).

• Paper published in Optics Letters: A paper that I have co-authored with Prof. Rajesh Menon's group, titled “Ultra-thin near infrared camera enabled by a flat multi-level diffractive lens" has been accepted for publication in the OSA journal Optics Letters. This paper demonstrates an ultra-thin near IR camera based on our multilevel diffractive lenses (open-access link).

• Paper published in OSA Continuum: A paper that I have co-authored with Prof. Rajesh Menon's group, titled “Single flat lens enabling imaging in the short-wave infra-red (SWIR) band" has been accepted for publication in the journal OSA Continuum. This paper demonstrates flat multi-level diffractive lenses that can operate in the SWIR (open-access link).

• Paper published in MDPI Sensors: A paper that I have co-authored with Prof. Carlos H. Mastrangelo's group at Utah ECE, titled “Parametrically amplified low-power MEMS capacitive humidity sensor" has been accepted for publication in the journal MDPI Sensors (open-access link). Thanks to Rugved Likhite, the lead author of this article and Prof. Mastrangelo.

• Paper published in PNAS: A paper that I have co-authored with Prof. Rajesh Menon's group, titled “Broadband lightweight flat lenses for long-wave infrared imaging” has been accepted for publication in the prestigious journal Proceedings of the National Academy of Sciences. This paper demonstrates applications of our multilevel diffractive lenses to imaging in the Longwave Infra Red regime. (open-access link).

• First paper published in OSA Optica: A paper that I have co-authored with Prof. Rajesh Menon's group has been accepted for publication in the prestigious OSA journal Optica. The paper describes "Imaging with flat optics: metalenses or diffractive lenses?" - a comparative look at the technologies of metalenses and multilevel diffractive lenses (open-access link). Thanks to Utah graduate students and colleagues Sourangsu Banerji and Monjurul Meem.

Paper published in OSA Continuum: A paper that I have co-authored with Prof. Rajesh Menon's group, titled “Superresolution optical nanopatterning at low light intensities using a quantum yield-matched photochrome” has been accepted for publication in the journal OSA Continuum (open-access link).

Paper published in OSA Applied Optics: A paper that I have co-authored with Prof. Carlos Mastrangelo's group, titled “Creep deformation in elastomeric membranes of liquid-filled tunable-focus lenses” has been accepted for publication in the OSA journal Applied Optics (open-access link).

• Chief Optical Engineer: Started working as Chief Optical Engineer at SharpEyes LLC, Utah while continuing my post-doc research in the dept. of ECE at the University of Utah. SharpEyes LLC is developing autofocus commercial eyewear. Grateful to SharpEyes LLC Managing Director Tridib Ghosh and Utah Prof. Carlos Mastrangelo for this opportunity.

Paper published in OSA Optics Express: A paper that I have co-authored with Prof. Rajesh Menon's group has been accepted for publication in the OSA journal Optics Express. The paper describes "Full-color video and still imaging using two flat lenses" (open-access link). Thanks to Utah graduate student and colleague Monjurul Meem.

• Most Downloaded paper in Optics Express for Nanophotonics: My paper co-authored with Prof. Rajesh Menon's group titled "Ultra-compact polarization rotation in integrated silicon photonics using digital metamaterials" (open-access link) has been highlighted as among the most downloaded papers in nanophotonics for the year 2017.

• Paper accepted for presentation at OSA IS 2017: A paper that I have co-authored with Prof. Rajesh Menon's group titled "Ultra-compact nanophotonic devices designed by computational metamaterials" has been accepted for presentation at the OSA Imaging and Applied Optics conference. (open-access link).

• Paper accepted in OSA CLEO 2017: A paper that I have authored in collaboration with Prof. Rajesh Menon's group was accepted for presentation in OSA CLEO this year. The papers discusses "Passive and active light control using computational metamaterials" (open-access link).

• Grad walk!: Received my PhD degree in ECE from the University of Utah. Many thanks to my advisor Prof. Rajesh Menon and to my colleagues at the Menon lab at Utah. Overjoyed to have my parents attend my grad walk. :-)

• OSA Outstanding Reviewer Recognition: Delighted to receive the OSA Outstanding Reviewer Recognition for 2017. Happy to be of service to the scientific community :-)

• Paper published in OSA Optics Express: A paper that I have co-authored with Prof. Rajesh Menon's group has been accepted for publication in the OSA journal Optics Express. The paper describes "Ultra-compact polarization rotation in integrated silicon photonics using digital metamaterials" (open-access link). Thanks to Utah graduate student and colleague Bing Shen.

• Post-doctoral Research Associate: Started working as post-doc in the dept. of ECE at the University of Utah.

• Successful PhD Defence :-)
  Successfully defended my PhD thesis. Many thanks to my advisor Prof. Rajesh Menon and to my colleagues at the Menon lab at Utah.

• Paper accepted in AIP Advances: My second research paper that I have co-authored with Prof. Rajesh Menon's group titled "A comprehensive simulation model of the performance of photochromic films in absorbance-modulation-optical-lithography" has been accepted for publication in AIP Advances. (open-access link).

• Paper accepted for presentation at OSA IS 2016: A paper that I have co-authored with Prof. Rajesh Menon's group titled "Modelling the performance of photochromic thin films to achieve super-resolution nanopatterning by absorbance modulation at low light intensity" has been accepted for presentation at the OSA Imaging and Applied Optics conference. (open-access link).

• MS in ECE: Received my MS in ECE from the University of Utah. Many thanks to my advisor Prof. Rajesh Menon and to my colleagues at the Menon lab at Utah.

• Paper accepted for presentation at EIPBN 2015: A paper that I have co-authored with Prof. Rajesh Menon's group titled "Super-resolution optical lithography using two approaches of Absorbance Modulation" has been accepted for presentation at the prestigious EIPBN Conference to be held at San Diego, CA.

• Paper accepted for presentation at OSA CLEO 2015: A paper that I have co-authored with Prof. Rajesh Menon's group titled "Super-resolution optical nanolithography: Beyond the far-field diffraction limit" got accepted for presentation at the prestigious OSA CLEO conference to be held at San Jose, CA. I will be presenting the work in person. (open-access link).

• Paper accepted for presentation at OSA IS 2014: A paper that I have co-authored with Prof. Rajesh Menon's group titled "Exploiting photochromism for optical nanopatterning" has been accepted for presentation at the OSA Imaging and Applied Optics conference. (open-access link).

• Best Poster Award: Won the best poster award at nanoUtah 2013 in Nanotechnology: Materials and Characterization.

• Paper accepted for presentation at EIPBN 2013: A paper that I have co-authored with Prof. Rajesh Menon's group titled "Maskless subwavelength nanopatterning using vortex phase plates and absorbance modulation" has been accepted for presentation at the prestigious EIPBN Conference to be held at Nashville, TN. I will be presenting the work in person.