Tuning the Terahertz Emission Power of an Intrinsic Josephson-Junction Stack with a Focused Laser Beam

Zhou, Xianjing; Yuan, Jie; Wu, Hongling; Gao, Zijian; Ji, Min; An, D. Y.; Huang, Y.; Rudau, F.; Wieland, R.; Gross, B.; Kinev, Nickolay V.; Li, J.; Ishii, Akira; Hatano, Takeshi; Koshelets, V. P.; Koelle, D.; Kleiner, R.; Wang, H. B.; Wu, Peiheng

doi:10.1103/physrevapplied.3.044012

Cited by 35 publications

(25 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In our previous theoretical study, we pointed out that the inhomogeneous j c distribution induced by laser heating strongly excites the Josephson plasma wave inside IJJs and amplify the THz emission power [29]. The control of j c distribution by laser heating has been realized in conventional Josephson junctions [31], [32], and recent experimental studies verify the laser heating amplifies the THz emission from the IJJ mesa [15], [16]. Thus, the laser heating is expected to be a powerful tool for controlling the THz emission from the IJJ mesa.…”

mentioning

confidence: 98%

Emission of Circularly Polarized Terahertz Wave From Inhomogeneous Intrinsic Josephson Junctions

Asai

Kawabata

2016

IEEE Trans. Appl. Supercond.

View full text Add to dashboard Cite

Abstract-We have theoretically demonstrated the emission of circularly-polarized terahertz (THz) waves from intrinsic Josephson junctions (IJJs) which is locally heated by an external heat source such as the laser irradiation. We focus on a mesastructured IJJ whose geometry is slightly deviate from a square and find that the local heating make it possible to emit circularlypolarized THz waves. In this mesa, the inhomogeneity of critical current density induced by the local heating excites the electromagnetic cavity modes TM (1,0) and TM (0,1), whose polarizations are orthogonal to each other. The mixture of these modes results in the generation of circularly-polarized THz waves. We also show that the circular polarization dramatically changes with the applied voltage. The emitter based on IJJs can emit circularly-polarized and continuum THz waves by the local heating, and will be useful for various technological application.

show abstract

mentioning

confidence: 98%

Emission of Circularly Polarized Terahertz Wave From Inhomogeneous Intrinsic Josephson Junctions

Asai

Kawabata

2016

IEEE Trans. Appl. Supercond.

View full text Add to dashboard Cite

show abstract

“…The local temperature distributions TðrÞ of the IJJ mesa devices have been measured in detail, and the results have been discussed in comparison with theoretical studies. [14][15][16][40][41][42][43][44][45]51,[63][64][65][66][78][79][80] These studies concluded that the spontaneous formation of a local temperature instability known as a hot spot can occur in the IJJ-THz emitter device due to both the quasi-two-dimensional thermal and electrical conductivities, the latter yielding a semiconducting-like temperature dependence of the c-axis normal state resistivity for under-doped Bi2212 single crystals. Previous studies revealed that a hot spot, within which the local temperature TðrÞ > T c , acts as a shunt resistance inserted parallel to the 0021-8979/2018/124(3)/033901/9/$30.00…”

Section: Introductionmentioning

confidence: 96%

Improved excitation mode selectivity of high-Tc superconducting terahertz emitters

Kashiwagi

Yuasa

Tanabe

et al. 2018

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

“…For comparison, the tunability of a single RTD source is 5% at best [19]. Previous studies have shown that the thermal management of emitting sources is a key requirement for controlling their characteristics [20,21,22,23,24,25,26,27,28,29,30,31,32,33,34]. Previously, radiation above 1 THz was achieved by an improved cooling technique [27].…”

Section: Introductionmentioning

confidence: 99%

Engineering and characterization of a packaged high-T_csuperconducting terahertz source module

Tsujimoto

Doi

Kuwano

et al. 2017

Supercond. Sci. Technol.

View full text Add to dashboard Cite

We present an effective engineering technique for compactly packaging high-T c superconducting continuous-wave terahertz source modules. A terahertzemitting device, which consists of stacks of intrinsic Josephson junctions in single crystalline Bi 2 Sr 2 CaCu 2 O 8+δ , bias electrodes, a collimating lens, and other components, is packaged into a single finger-sized assembly. The rigid and stable structure used for the packaging guarantees physical and chemical stability with good thermal contact, and provides reproducible characteristics with a high yield rate. The coherent terahertz waves can be emitted from the back side of the base crystal without significant screening. The intuitive results obtained from the numerical simulation are consistent with the observed thermal properties. The modules are easy to use, and thus intended for all users unfamiliar with superconducting electronic devices.

show abstract

Tuning the Terahertz Emission Power of an Intrinsic Josephson-Junction Stack with a Focused Laser Beam

Cited by 35 publications

References 48 publications

Emission of Circularly Polarized Terahertz Wave From Inhomogeneous Intrinsic Josephson Junctions

Emission of Circularly Polarized Terahertz Wave From Inhomogeneous Intrinsic Josephson Junctions

Improved excitation mode selectivity of high-Tc superconducting terahertz emitters

Engineering and characterization of a packaged high-T_csuperconducting terahertz source module

Contact Info

Product

Resources

About

Tuning the Terahertz Emission Power of an Intrinsic Josephson-Junction Stack with a Focused Laser Beam

Cited by 35 publications

References 48 publications

Emission of Circularly Polarized Terahertz Wave From Inhomogeneous Intrinsic Josephson Junctions

Emission of Circularly Polarized Terahertz Wave From Inhomogeneous Intrinsic Josephson Junctions

Improved excitation mode selectivity of high-Tc superconducting terahertz emitters

Engineering and characterization of a packaged high-Tcsuperconducting terahertz source module

Contact Info

Product

Resources

About

Engineering and characterization of a packaged high-T_csuperconducting terahertz source module