Design of surface emitting distributed feedback quantum cascade laser with single-lobe far-field pattern and high outcoupling efficiency

2010 ◽  
Vol 19 (5) ◽  
pp. 054208 ◽  
Author(s):  
Guo Wan-Hong ◽  
Liu Jun-Qi ◽  
Lu Quan-Yong ◽  
Zhang Wei ◽  
Li Lu ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Distributed Feedback ◽  
Field Pattern ◽  
Far Field ◽  
Quantum Cascade ◽  
Far Field Pattern

Effect of transverse mode structure on the far field pattern of metal-metal terahertz quantum cascade lasers

2008 ◽  
Vol 104 (12) ◽  
pp. 124513 ◽  
Author(s):  
P. Gellie ◽  
W. Maineult ◽  
A. Andronico ◽  
G. Leo ◽  
C. Sirtori ◽  
...  
Keyword(s):  
Quantum Cascade Lasers ◽  
Transverse Mode ◽  
Field Pattern ◽  
Far Field ◽  
Mode Structure ◽  
Quantum Cascade ◽  
Metal Metal ◽  
Far Field Pattern ◽  
Cascade Lasers

scholarly journals Temperature-Insensitive Imaging Properties of a Broadband Terahertz Nonlinear Quantum Cascade Laser

2020 ◽  
Vol 10 (17) ◽  
pp. 5926 ◽  
Author(s):  
Atsushi Nakanishi ◽  
Shohei Hayashi ◽  
Hiroshi Satozono ◽  
Kazuue Fujita
Keyword(s):  
Quantum Cascade Laser ◽  
Optical Nonlinearity ◽  
Field Pattern ◽  
Far Field ◽  
Thz Imaging ◽  
Quantum Cascade ◽  
Field Patterns ◽  
Imaging Characteristics ◽  
Imaging Results ◽  
Nonlinear Quantum

Terahertz (THz) quantum cascade laser sources based on optical nonlinearity are the only electrically pumped monolithic semiconductor sources operable at room temperature in the 0.6–6 THz range. We investigated the temperature dependence of the imaging characteristics of a broadband THz nonlinear quantum cascade laser and evaluated several important properties: the spectrum, far-field pattern and THz imaging results. Consequently, we found that the far-field patterns were single-lobed Gaussian-like, and THz images were well-resolved despite the lower operating temperature of the device. The stable temperature-performance indicates that this broadband THz source is promising for THz imaging applications.

Far-field patterns of line sources mounted between four-dielectric substrates

1992 ◽  
Vol 70 (2-3) ◽  
pp. 173-178 ◽  
Author(s):  
Ioanna Diamandi ◽  
Costas Mertzianidis ◽  
John N. Sahalos
Keyword(s):  
Remote Sensing ◽  
Line Source ◽  
Dielectric Substrate ◽  
Microstrip Antennas ◽  
Field Pattern ◽  
Substrate Thickness ◽  
Far Field ◽  
Dielectric Substrates ◽  
Field Patterns ◽  
Far Field Pattern

The far-field pattern characteristics of line sources lying between the slabs of a four-dielectric substrate configuration are presented. The patterns are calculated for several cases of the substrate thickness as well as for several line-source locations. The considerations that are made give useful applications in remote sensing and microstrip antennas.

scholarly journals Second harmonic generation from 3D nanoantennas: on the surface and bulk contributions by far-field pattern analysis

2011 ◽  
Vol 19 (27) ◽  
pp. 26752 ◽  
Author(s):  
Alessio Benedetti ◽  
Marco Centini ◽  
Mario Bertolotti ◽  
Concita Sibilia
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Pattern Analysis ◽  
Second Harmonic ◽  
Field Pattern ◽  
Far Field ◽  
Far Field Pattern

Terahertz Quantum Cascade Laser of First-Order Distributed Feedback Based on a Buried Grating

2021 ◽  
Vol 41 (2) ◽  
pp. 0214001
Author(s):  
常高垒 Chang Gaolei ◽  
朱欢 Zhu Huan ◽  
俞辰韧 Yu Chenren ◽  
朱海卿 Zhu Haiqing ◽  
徐刚毅 Xu Gangyi ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Distributed Feedback ◽  
Quantum Cascade ◽  
First Order
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