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Elias Towe

Position
Faculty
Email
towe@cmu.edu
Phone

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Affiliation
Department of Electrical and Computer Engineering, Carnegie Mellon University
Institution
Carnegie Mellon University
Research

Towe's group pursues research in basic optical and quantum phenomena in materials for applications in novel photonic devices that enable a new generation of information processing systems for communication, computation, and sensing. The group is also interested in understanding new pathways and fundamental mechanisms for solar energy conversion devices. Current focus is on the use of phenomena (such as three-dimensional quantum-confinement effects in nanometer-scale structures) in the study of novel devices. Examples include: quantum-dot infrared detectors and imaging sensors, electrically-pumped photonic crystal micro-cavity lasers with quantum-dot active regions, multi-spectral solar energy conversion devices, plasmonic bio-sensors, and fluorescence bio-sensing devices.

Most Cited Publications

"Normal-incidence intersubband (In, Ga) As/GaAs quantum dot infrared photodetectors," Pan, Dong, Elias Towe, and Steve Kennerly, Applied Physics Letters 73, no. 14 (1998)
"Tunable band gaps in bilayer transition-metal dichalcogenides," Ramasubramaniam, Ashwin, Doron Naveh, and Elias Towe, Physical Review B 84, no. 20 (2011)
"Tunable band gaps in bilayer graphene− BN heterostructures," Ramasubramaniam, Ashwin, Doron Naveh, and Elias Towe, Nano letters 11, no. 3 (2011)
"Semiconductor quantum-dot nanostructures: Their application in a new class of infrared photodetectors," Towe, Elias, and Dong Pan, IEEE Journal of Selected Topics in Quantum Electronics 6, no. 3 (2000)
"A five-period normal-incidence (In, Ga) As/GaAs quantum-dot infrared photodetector," Pan, Dong, Elias Towe, and Steve Kennerly, Applied physics letters 75, no. 18 (1999)

Recent Publications

"Pulse Response of an Ultra-compact Grating-based Monolithic Optical Compressor,"  CC Yang and E Towe.  IEEE Photonics Journal (2018)
"A Unified Approach to Achieving High Power and High Energy in Chirally-coupled-core Ytterbium-doped Fiber Amplifier Systems," Bai, Jinxu & Zhang, Jim & Koponen, Joona & Kanskar, Manoj & Towe, Elias, IEEE Photonics Journal 10 (2018)
"Low-threshold voltage ultraviolet light-emitting diodes based on (Al,Ga)N metal–insulator–semiconductor structures," Liang, Yu-Han & Towe, Elias, Applied Physics Express 10 (2017)
"Ultra-compact grating-based monolithic optical pulse compressor for laser amplifier systems," Yang, Chang & Towe, Elias, Journal of the Optical Society of America B. 33 (2016)
"Liquid-Metal-Enabled Synthesis of Aluminum-Containing III-Nitrides by Plasma-Assisted Molecular Beam Epitaxy," Liang, Yu-Han & T. Nuhfer, Noel & Towe, Elias, Journal of Vacuum Science & Technology B. 34 (2016)

Selected Publications

"Size, shape, composition, and electronic properties of InAs/GaAs quantum dots by scanning tunneling microscopy and spectroscopy," S. Gaan, G. He, R.M. Feenstra, J Walker, and E. Towe, J. Appl. Phys. 108, 114315  (2010)
"On ternary nitride substrates for visible semiconductor light-emitters," T. K. Sharma and E. Towe, Appl. Phys. Lett. 96, 191105 (2010)
"Electronics states of InAs/GaAs quantum dots by scanning tunneling spectroscopy," S. Gaan, Guowei He, R.M. Feenstra, J. Walker, and E. Towe, Appl. Phys. Lett. 97, 123110 (2010)
"Application-oriented nitride substrates: The key to long-wavelength nitride lasers beyond 500 nm," T. K. Sharma and E. Towe, J. Appl. Phys. 107, 024516 (2010)
"A method for evaluating the ground state excitonic band gaps of strained InxGa1−xN/GaN quantum wells," T. K. Sharma and E. Towe, J. Appl. Phys. 106, 104509 (2009)

Office
147 Roberts Engineering Hall
Office URL
https://www.google.com/maps/embed?pb=%211m18%211m12%211m3%211d1518.2423175838037%212d-79.94800444174024%213d40.442409336158995%212m3%211f0%212f0%213f0%213m2%211i1024%212i768%214f13.1%213m3%211m2%211s0x8834f221291e72e7%3A0xbf8a7c2d0e4b80b5%212sHamerschlag%20Hall%2C%20Pittsburgh%2C%20PA%2015213%215e0%213m2%211sen%212sus%214v1452296118696