137 and 165 GHZ radiometer measurements of hot electrons in LDX by Woskov, Paul P., Kesner, Jay, Garnier, Darren, Mauel, M. E.

“…Interpretation in terms of the hot electron parameters requires integration over many ECE harmonics. …”
Get full text
Get full text

Bremsstrahlung and K alpha fluorescence measurements for inferring conversion efficiencies into fast ignition relevant hot electrons by Chen, C. D., Patel, P. K., Hey, D. S., Mackinnon, A. J., Key, M. H., Akli, K. U., Bartal, T., Beg, F. N., Chawla, S., Chen, H., Freeman, R. R., Higginson, D. P., Link, A., Ma, T. Y., MacPhee, A. G., Stephens, R. B., Van Woerkom, L. D., Westover, B., Porkolab, Miklos

Get full text
Get full text

All-optical measurement of the hot electron sheath driving laser ion acceleration from thin foils by Jackel, O., Polz, J., Pfotenhauer, Sebastian Michael, Schlenvoigt, H.-P., Schwoerer, H., Kaluza, M. C.

“…Central parameters of laser ion acceleration such as the hot-electron density, the temperature distribution and the conversion efficiency from laser pulse energy into hot electrons become comprehensively accessible with this technique.…”
Get full text

Limiting efficiencies of solar energy conversion and photo-detection via internal emission of hot electrons and hot holes in gold by Hsu, Wei-Chun, Liao, Bolin, Boriskina, Svetlana V, Zhou, Jiawei, Chen, Gang

“…Our results based on the ab initio calculations of the electron density of states (e-DOS) reveal that the limiting efficiency of the full-spectrum Au converter based on hot electron injection is below 4%. This value is even lower than previously established limit based on the parabolic approximation of the Au electron energy bands. …”
Get full text
Get full text
Get full text

Hot electron bolometer heterodyne receiver with a 4.7-THz quantum cascade laser as a local oscillator by Kloosterman, J. L., Hayton, D. J., Ren, Y., Hovenier, J. N., Gao, J. R., Klapwijk, T. M., Walker, C. K., Reno, J. L., Kao, Tsung-Yu, Hu, Qing

“…A quasi-optical, superconducting NbN hot electron bolometer is used as the mixer. We recorded a double sideband receiver noise temperature ( T[DSB over rec] ) of 815 K, which is ~ 7 times the quantum noise limit ( [hν over 2kB] ) and an Allan variance time of 15 s at an effective noise fluctuation bandwidth of 18 MHz. …”
Get full text
Get full text

Quasiparticle lifetimes in magnesium clusters modeled by self-consistent GWΓ calculations by He, Yi, Zeng, Taofang

“…In the high-excitation-energy regime, scaled lifetimes of hot electrons converge to the range of 21–24 fs eV[superscript 2]. …”
Get full text

Terahertz heterodyne spectrometer using a quantum cascade laser by Ren, Y., Hovenier, J. N., Higgins, R., Gao, J. R., Klapwijk, T. M., Shi, S. C., Bell, A., Klein, B., Williams, B. S., Kumar, S., Reno, J. L., Hu, Qing

“…A terahertz (THz) heterodyne spectrometer is demonstrated based on a quantum cascade laser(QCL) as a local oscillator (LO) and an NbN hot electron bolometer as a mixer, and it is used to measure high-resolution molecular spectral lines of methanol (CH[subscript 3]OH) between 2.913–2.918 THz. …”
Get full text
Get full text

Stabilized HEB-QCL heterodyne spectrometer at super-terahertz by Ren, Y., Hayton, D. J., Hovenier, J. N., Cui, M., Gao, J. R., Klapwijk, T. M., Shi, S. C., Kao, Tsung-Yu, Hu, Q., Reno, J. L.

“…We report a new experiment on a high-resolution heterodyne spectrometer using a 3.5 THz quantum cascade laser (QCL) as local oscillator (LO) and a superconducting hot electron bolometer (HEB) as mixer by stabilizing both frequency and amplitude of the QCL. …”
Get full text

3.5 Thz Quantum Cascade Laser at 70 K as Local Oscillator by Ren, Y., de Visser, P. J., Hovenier, J. N., Zhang, W., Gao, J. R., Klapwijk, T. M., Shi, S. C., Kao, T.-Y., Kumar, S., Reno, J. L., Hu, Qing

“…We report a set of measurements to demonstrate a new type of surface emitting distributed feedback (DFB) quantum cascade laser (QCL) operated at 3.5 THz as a local oscillator by pumping a superconducting hot-electron bolometer (HEB) mixer. Based on the Bragg gratings incorporated into the waveguide, the second order DFB surface emitting THz QCL shows single mode emission at 3.555 THz, which is only 4 GHz off from the hydroxyl (OH) line. …”
Get full text
Get full text

Frequency Locking of a 3.5 Thz Quantum Cascade Laser Using a Gas Cell by Ren, Y., Hovenier, J. N., Cui, M., Hayton, D. J., Gao, J. R., Klapwijk, T. M., Shi, S. C., Kao, T.-Y., Hu, Qing, Reno, J. L.

“…We first present the study of the noise of the THz QCL with the contribution from both the frequency and amplitude domain, by using a NbN superconducting hot-electron bolometer as a power detector. We then present the frequency locking measurement with a lock-in amplifier registering the derivate curve of the absorption line and a proportional-integral-derivative (PID) controller generating the feedback signal. …”
Get full text
Get full text

A 4.7THz heterodyne receiver for a balloon borne telescope by Hayton, D. J., Kloosterman, J. L., Ren, Y., Gao, J. R., Klapwijk, T. M., Hu, Q., Walker, C. K., Reno, J. L., Kao, T.-Y., Hu, Qing

“…We report on the performance of a high sensitivity 4.7 THz heterodyne receiver based on a NbN hot electron bolometer mixer and a quantum cascade laser (QCL) as local oscillator. …”
Get full text
Get full text

Evaluation and Reliability Assessment of GaN-on-Si MIS-HEMT for Power Switching Applications by Chou, Po-Chien, Chen, Szu-Hao, Hsieh, Ting-En, Cheng, Stone, Chang, Edward, del Alamo, Jesus A

“…Changes of direct current (DC) figures of merit in voltage step-stress experiments are measured, statistics are studied, and correlations are investigated. Hot electron stress produces permanent change which can be attributed to charge trapping phenomena and the generation of deep levels or interface states. …”
Get full text

A model for the critical voltage for electrical degradation of GaN high electron mobility transistors by Joh, Jungwoo, del Alamo, Jesus A.

“…All of our findings are consistent with a degradation mechanism based on crystallographic-defect formation due to the inverse piezoelectric effect. Hot-electron-based mechanisms seem to be in contradiction with our experimental results.…”
Get full text

Implosion Experiments using Glass Ablators for Direct-Drive Inertial Confinement Fusion by Smalyuk, V. A., Betti, R., Delettrez, J. A., Glebov, V. Yu., Meyerhofer, D. D., Radha, P. B., Regan, S. P., Sangster, T. C., Sanz, J., Seka, W., Stoecki, C., Yaakobi, B., Frenje, Johan A., Li, Chikang, Petrasso, Richard D., Seguin, Fredrick Hampton

“…The x-ray signal caused by hot electrons generated by two-plasmon-decay instability was reduced by more than ~40× and hot-electron temperature by ~2× in the glass compared to plastic ablators at ignition-relevant drive intensities of ~1×10[superscript 15]  W/cm[superscript 2], suggesting reduced target preheat. …”
Get full text
Get full text
Get full text

Heterodyne gas cell measurements at 2.9 THz using a quantum cascade laser as local oscillator by Ren, Y., Gao, J. R., Hovenier, J. N., Higgins, R., Zhang, W., Bell, A., Klein, B., Klapwijk, T. M., Shi, S. C., Kao, Tsung-Yu, Kumar, S., Hu, Qing, Reno, J. L.

“…The potential receiver technology is a combination of a hot electron bolometer (HEB) mixer and a THz quantum cascade laser (QCL) local oscillator (LO).Here we report the first highresolution heterodyne spectroscopy measurement of a gas cell using such a HEB-QCL receiver. …”
Get full text
Get full text

Roadmap on optical energy conversion by Boriskina, Svetlana V, Green, Martin A, Catchpole, Kylie, Yablonovitch, Eli, Beard, Matthew C, Okada, Yoshitaka, Lany, Stephan, Gershon, Talia, Zakutayev, Andriy, Tahersima, Mohammad H, Sorger, Volker J, Naughton, Michael J, Kempa, Krzysztof, Dagenais, Mario, Yao, Yuan, Xu, Lu, Sheng, Xing, Bronstein, Noah D, Rogers, John A, Alivisatos, A Paul, Nuzzo, Ralph G, Gordon, Jeffrey M, Wu, Di M, Wisser, Michael D, Salleo, Alberto, Dionne, Jennifer, Bermel, Peter, Greffet, Jean-Jacques, Celanovic, Ivan, Soljacic, Marin, Manor, Assaf, Rotschild, Carmel, Raman, Aaswath, Zhu, Linxiao, Fan, Shanhui, Chen, Gang

“…Light–matter interaction enabled by nanophotonics and plasmonics underlie the performance of the third- and fourth-generation energy-conversion devices, including up- and down-conversion of photon energy, near-field radiative energy transfer, and hot electron generation and harvesting. Finally, the increased market penetration of alternative solar energy-conversion technologies amplifies the role of cost-driven and environmental considerations. …”
Get full text
Get full text

Photo-excitation Cascade and Multiple Carrier Generation in Graphene by Tielrooij, K. J., Jensen, S. A., Centeno, A., Pesquera, A., Zurutuza Elorza, A., Bonn, M., Koppens, Frank Henricus Louis, Song, Justin Chien Wen, Levitov, Leonid

“…Our results indicate that carrier–carrier scattering is highly efficient, prevailing over optical-phonon emission in a wide range of photon wavelengths and leading to the production of secondary hot electrons originating from the conduction band. As hot electrons in graphene can drive currents, multiple hot-carrier generation makes graphene a promising material for highly efficient broadband extraction of light energy into electronic degrees of freedom, enabling high-efficiency optoelectronic applications.…”
Get full text
Get full text

Femtosecond surface plasmon interferometry by Temnov, Vasily V., Nelson, Keith Adam, Armelles, Gaspar, Cebollada, Alfonso, Thomay, Tim, Leitenstorfer, Alfred, Bratschitsch, Rudolf

“…The performance is demonstrated by monitoring the sub-picosecond dynamics of hot electrons in gold.…”
Get full text
Get full text

Impact ionization in InSb probed by terahertz pump—terahertz probe spectroscopy by Hoffmann, Matthias C., Hebling, Janos, Hwang, Harold Young, Yeh, Ka-Lo, Nelson, Keith Adam

“…The onset of a well-defined absorption peak at 1.2 THz is an indication of changes in longitudinal optical (LO) and longitudinal acoustic (LA) phonon populations due to cooling of the hot electrons.…”
Get full text
Get full text

Plasmonic materials for energy: From physics to applications by Boriskina, Svetlana V., Ghasemi, Hadi, Chen, Gang

“…SP modes channel the energy of absorbed photons directly to the free electrons, and the generated hot electrons can be utilized in thermoelectric, photovoltaic and photo-catalytic platforms. …”
Get full text
Get full text