Electrically-pumped THz emitters based on plasma waves excitation in III-nitride structures

2020 ◽  
Author(s):  
Vytautas Janonis ◽  
Daniil Pashnev ◽  
Ignas Grigelionis ◽  
Vadym Korotieiev ◽  
Roman M. Balagula ◽  
...  
Keyword(s):  
Plasma Waves ◽  
Electrically Pumped

scholarly journals Non-linear Terahertz driving of plasma waves in layered cuprates

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Francesco Gabriele ◽  
Mattia Udina ◽  
Lara Benfatto
Keyword(s):  
Low Frequency ◽  
Plasma Waves ◽  
Meissner Effect ◽  
High Energy ◽  
Plasma Mode ◽  
Light Pulses ◽  
High Frequency Plasma ◽  
Non Linear ◽  
Out Of Plane ◽  
Layered Cuprates

AbstractThe hallmark of superconductivity is the rigidity of the quantum-mechanical phase of electrons, responsible for superfluid behavior and Meissner effect. The strength of the phase stiffness is set by the Josephson coupling, which is strongly anisotropic in layered cuprates. So far, THz light pulses have been used to achieve non-linear control of the out-of-plane Josephson plasma mode, whose frequency lies in the THz range. However, the high-energy in-plane plasma mode has been considered insensitive to THz pumping. Here, we show that THz driving of both low-frequency and high-frequency plasma waves is possible via a general two-plasmon excitation mechanism. The anisotropy of the Josephson couplings leads to markedly different thermal effects for the out-of-plane and in-plane response, linking in both cases the emergence of non-linear photonics across Tc to the superfluid stiffness. Our results show that THz light pulses represent a preferential knob to selectively drive phase excitations in unconventional superconductors.

scholarly journals Persistent plasma waves in interstellar space detected by Voyager 1

2021 ◽  
Author(s):  
Stella Koch Ocker ◽  
James M. Cordes ◽  
Shami Chatterjee ◽  
Donald A. Gurnett ◽  
William S. Kurth ◽  
...  
Keyword(s):  
Plasma Waves ◽  
Interstellar Space

scholarly journals Direct imaging of plasma waves using ultrafast electron microscopy

2020 ◽  
Vol 7 (6) ◽  
pp. 064301
Author(s):  
Shuaishuai Sun ◽  
Xiaoyi Sun ◽  
Daniel Bartles ◽  
Elliot Wozniak ◽  
Joseph Williams ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Plasma Waves ◽  
Direct Imaging

scholarly journals Room temperature electrically pumped topological insulator lasers

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Jae-Hyuck Choi ◽  
William E. Hayenga ◽  
Yuzhou G. N. Liu ◽  
Midya Parto ◽  
Babak Bahari ◽  
...  
Keyword(s):  
Topological Insulator ◽  
Room Temperature ◽  
Phase Locking ◽  
Quantum Spin ◽  
Single Frequency ◽  
Laser Array ◽  
Quantum Spin Hall Effect ◽  
Electrically Pumped ◽  
Spatially Extended ◽  
Synthetic Gauge Fields

AbstractTopological insulator lasers (TILs) are a recently introduced family of lasing arrays in which phase locking is achieved through synthetic gauge fields. These single frequency light source arrays operate in the spatially extended edge modes of topologically non-trivial optical lattices. Because of the inherent robustness of topological modes against perturbations and defects, such topological insulator lasers tend to demonstrate higher slope efficiencies as compared to their topologically trivial counterparts. So far, magnetic and non-magnetic optically pumped topological laser arrays as well as electrically pumped TILs that are operating at cryogenic temperatures have been demonstrated. Here we present the first room temperature and electrically pumped topological insulator laser. This laser array, using a structure that mimics the quantum spin Hall effect for photons, generates light at telecom wavelengths and exhibits single frequency emission. Our work is expected to lead to further developments in laser science and technology, while opening up new possibilities in topological photonics.

Terahertz emission from electrically pumped gallium doped silicon devices

2004 ◽  
Vol 85 (17) ◽  
pp. 3660-3662 ◽  
Author(s):  
P.-C. Lv ◽  
R. T. Troeger ◽  
S. Kim ◽  
S. K. Ray ◽  
K. W. Goossen ◽  
...  
Keyword(s):  
Terahertz Emission ◽  
Silicon Devices ◽  
Electrically Pumped ◽  
Doped Silicon

Refraction of plasma waves in the ionosphere (in connection with sounding of the ionosphere from above)

1973 ◽  
Vol 16 (7) ◽  
pp. 753-758
Author(s):  
B. N. Gershman ◽  
A. E. Krupina ◽  
Yu. Ya. Yashin
Keyword(s):  
Plasma Waves

Electrically Pumped Room-Temperature Pulsed InGaAsP-Si Hybrid Lasers Based on Metal Bonding

2009 ◽  
Vol 26 (6) ◽  
pp. 064211 ◽  
Author(s):  
Chen Ting ◽  
Hong Tao ◽  
Pan Jiao-Qing ◽  
Chen Wei-Xi ◽  
Cheng Yuan-Bing ◽  
...  
Keyword(s):  
Room Temperature ◽  
Metal Bonding ◽  
Hybrid Lasers ◽  
Electrically Pumped
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