Dr. Dennis Callahan Profile

Dr. Dennis Callahan

at Draper Lab

SPIE Involvement:

Author

Publications (4)

SPIE Journal Paper | 25 May 2024 Open Access

Solution-based Sb₂Se₃ thin films for microphotonics

Rashi Sharma, Casey Schwarz, Daniel Wiedeman, Eric T. Bissell, Brian Mills, Marie Sykes, Jasper Stackawitz, Jake Klucinec, Dennis Callahan, JueJun Hu, Parag Banerjee, Kathleen Richardson

JOM, Vol. 4, Issue 03, 031203, (May 2024) https://doi.org/10.1117/12.10.1117/1.JOM.4.3.031203

KEYWORDS: Antimony, Selenium, Thin films, Particles, Raman spectroscopy, Scanning electron microscopy, Silicon, Heat treatments, Film thickness, Annealing

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Proceedings Article | 3 October 2022 Presentation + Paper

Ultra-low energy programmable non-volatile silicon photonics based on phase-change materials with graphene heaters

Zhuoran Fang, Rui Chen, Jiajiu Zheng, Asir Intisar Khan, Kathryn Neilson, Sarah Geiger, Dennis Callahan, Michael Moebius, Abhi Saxena, Michelle Chen, Carlos Rios, Juejun Hu, Eric Pop, Arka Majumdar

Proceedings Volume 12196, 1219602 (2022) https://doi.org/10.1117/12.2632208

KEYWORDS: Graphene, Phase shifts, Switching, Silicon photonics, Waveguides, Switches, Microrings, Photonics, Wavelength tuning

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Proceedings Article | 12 October 2020 Presentation + Paper

Tunable infrared spectral imaging system

Christine Wang, Nolan Peard, Dennis Callahan, Joy Perkinson, Neil Patel, John LeBlanc, Qingyang Du, Takian Fakhrul, Caroline Ross, Juejun Hu

Proceedings Volume 11537, 1153703 (2020) https://doi.org/10.1117/12.2570591

KEYWORDS: Imaging systems, Infrared imaging, Infrared radiation, Imaging spectroscopy, Optical filters, Molybdenum, Infrared signatures, Polarizers, Long wavelength infrared, Thermography

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Proceedings Article | 29 August 2017 Presentation + Paper

Advances in flexible optrode hardware for use in cybernetic insects

Joseph Register, Dennis Callahan, Carlos Segura, John LeBlanc, Charles Lissandrello, Parshant Kumar, Christopher Salthouse, Jesse Wheeler

Proceedings Volume 10352, 103520I (2017) https://doi.org/10.1117/12.2273219

KEYWORDS: Optogenetics, Electronics, Packaging, Neurons, Sensors, Tissues, Polymer multimode waveguides, Polymers, Waveguides, Biomedical optics

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