Results 121 to 130 of about 409,972 (287)

Ultrafast optical generation of coherent phonons in CdTe1-xSex quantum dots

, 2003
We report on the impulsive generation of coherent optical phonons in CdTe0.68Se0.32 nanocrystallites embedded in a glass matrix. Pump probe experiments using femtosecond laser pulses were performed by tuning the laser central energy to resonate with the ...
A. D. Yoffe, A. Ingale, A. J. Sutherland, A. Mokhtari, A. Roy, A. S. Barker, A. V. Bragas, A. V. Gomonnai, A. V. Kuznetsov, Alka Ingale, B. Szigeti, C. Aku-Leh, C. H. B. Cruz, D. M. Mittleman, D. N. Talwar, E. R. Thoen, G. A. Garrett, G. Cerullo, H. Barkhuijsen, I. F. Chang, J. A. Sanjurjo, J. Chesnoy, J. F. Scott, J. P. Zheng, J. Warnock, J. Zhao, L. Saviot, M. I. Vasilevskiy, M. I. Vasilevskiy, M. I. Vasilevskiĭ, M. Ikezawa, M. P. Chamberlain, O. V. Misochko, P. Moriarty, P. Verma, P. Verma, R. K. Wehner, R. Merlin, R. Merlin, S. Costantino, S. Perkowitz, T. Bischof, T. D. Krauss, T. E. Stevens, T. E. Stevens, T. K. Cheng, T. Mishina, T. W. Roberti, U. Banin, U. Fano, V. Jungnickel, V. Spagnolo, W. Kütt, W. S. O. Rodden, Y. N. Hwang, Y. X. Yan, Y. X. Yan, Z. C. Feng   +57 more
core   +1 more source

Organic Thin‐Film Transistors for Neuromorphic Computing

Advanced Electronic Materials, EarlyView.
Organic thin‐film transistors (OTFTs) are reviewed for neuromorphic computing applications, highlighting their power‐efficient, and biological time‐scale operation. This article surveys OFET and OECT devices, compares them with memristors and CMOS, analyzes how fabrication parameters shape spike‐based metrics, proposes standardized characterization ...
Luke McCarthy, Mohan V. Jacob, Mostafa Rahimi Azghadi   +2 more
wiley   +1 more source

Immunity of intersubband polaritons to inhomogeneous broadening

, 2017
We demonstrate that intersubband (ISB) polaritons are robust to inhomogeneous effects originating from the presence of multiple quantum wells (MQWs). In a series of samples that exhibit mid-infrared ISB absorption transitions with broadenings varying by ...
Biasiol, G., Carusotto, I., Colombelli, R., Manceau, J-M., Tran, N. L.   +4 more
core   +1 more source

Phase noise performance comparison between optoelectronic oscillators based on optical delay lines and whispering gallery mode resonators.

Optics Express, 2014
We investigate the phase noise performance of optoelectronic oscillators when the optical energy storage elements are in the following three configurations: a high-Q whispering gallery mode resonator, an optical delay-line and a combination of both ...
K. Saleh, R. Henriet, S. Diallo, G. Lin, R. Martinenghi, I. Balakireva, Patrice Salzenstein, A. Coillet, Y. Chembo   +8 more
semanticscholar   +1 more source

Fundamental Challenges, Physical Implementations, and Integration Strategies for Ising Machines in Large‐Scale Optimization Tasks

Advanced Electronic Materials, EarlyView.
Ising machines are emerging as specialized hardware solvers for computationally hard optimization problems. This review examines five major platforms—digital CMOS, analog CMOS, emerging devices, coherent optics, and quantum systems—highlighting physics‐rooted advantages and shared bottlenecks in scalability and connectivity.
Hyunjun Lee, Joon Pyo Kim, Sanghyeon Kim
wiley   +1 more source

Real-Time and Long-Distance Measurement of Displacement Based on Optoelectronic Oscillator

IEEE Access, 2019
A frequency-encoded real-time and long-distance displacement measurement method based on two cross-referencing optoelectronic oscillators (OEOs) is proposed and experimentally demonstrated.
Zhiqiang Fan, Qi Qiu, Jun Su, Tianhang Zhang, Yue Lin, Di Jiang   +5 more
doaj   +1 more source

Highly-complex optical signal generation using electro-optical systems with non-linear, non-invertible transmission functions

, 2012
We present a scheme whereby a static non-linear, non-invertible transmission function performed by the electro-optic Mach-Zehnder modulator produces highly complex optical chaos.
González, Jorge A., Márquez, Bicky A., Suárez-Vargas, José J.   +2 more
core   +1 more source

Integrated Optoelectronic Model to Predict the External Quantum Efficiency of Single‐Layer TADF Organic Light‐Emitting Diodes

Advanced Electronic Materials, EarlyView.
An experimentally validated optoelectronic device model is presented to describe the efficiency and roll‐off behavior of single‐layer TADF OLEDs. By coupling charge transport, exciton dynamics, and optical outcoupling, the model reproduces the External Quantum Efficiency (EQE) across different emission layer thicknesses and temperatures, offering ...
Jawid Nikan, Kaiwen Guo, Yungui Li, Paul W. M. Blom, Gert‐Jan A. H. Wetzelaer   +4 more
wiley   +1 more source

Stable Neural Signal Recording Processed by Memristor‐Based Reservoir Computing System

Advanced Intelligent Systems, EarlyView.
This work introduces a memristor‐based reservoir computing (RC) system for real‐time, energy‐efficient processing of neural signals in brain‐machine interface (BMI). Combined with flexible mesh neural probes with tissue‐like flexibility and subcellular‐scale features that enable consistent, long‐term tracking of single‐cell neural activities, the ...
Soohyeon Kim, Yuting Wu, Finn Moore, Mingtao Hu, Xiaoyu Zhang, Sangmin Yoo, Eric Yeu‐Jer Lee, Hao Shen, Yichun He, Jia Liu, Wei D. Lu   +10 more
wiley   +1 more source

Simple Optoelectronic Feedback in Microwave Oscillators [PDF]

A proposed method of stabilizing microwave and millimeter-wave oscillators calls for the use of feedback in optoelectronic delay lines characterized by high values of the resonance quality factor (Q).
Iltchenko, Vladimir, Maleki, Lute
core   +1 more source