Powerful terahertz emission from Bi2Sr2CaCu2O8+δ mesa arrays

Benseman, Timothy; Koshelev, A. E.; Kwok, W. K.; Welp, U.; Minami, Hidetoshi; Kadowaki, K.; Yamamoto, Takashi

doi:10.1063/1.4813536

Cited by 120 publications

(106 citation statements)

References 35 publications

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“…12,13 Recently, by synchronizing the emissions from a three-mesa array, P $ 610 lW was reported. 17 Using these characteristic features, THz imaging systems [29][30][31] and THz emission and detection system both based on high-T c superconductors 19 are also developed. These THz technologies using IJJs are compatible with the recently developed semiconductor THz devices such as the resonant tunneling diodes 47,48 and the quantum cascade lasers.…”

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confidence: 99%

Generation of electromagnetic waves from 0.3 to 1.6 terahertz with a high-Tc superconducting Bi2Sr2CaCu2O8+δ intrinsic Josephson junction emitter

Kashiwagi

Yamamoto

Kitamura

et al. 2015

Applied Physics Letters

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To obtain higher power P and frequency f emissions from the intrinsic Josephson junctions in a high-Tc superconducting Bi2Sr2CaCu2O8+δ single crystal, we embedded a rectangular stand-alone mesa of that material in a sandwich structure to allow for efficient heat exhaust. By varying the current-voltage (I-V) bias conditions and the bath temperature Tb, f is tunable from 0.3 to 1.6 THz. The maximum P of a few tens of μW, an order of magnitude greater than from previous devices, was found at Tb∼55 K on an inner I-V branch at the TM(1,0) cavity resonance mode frequency. The highest f of 1.6 THz was found at Tb=10 K on an inner I–V branch, but away from cavity resonance frequencies. A possible explanation is presented.

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confidence: 99%

Generation of electromagnetic waves from 0.3 to 1.6 terahertz with a high-Tc superconducting Bi2Sr2CaCu2O8+δ intrinsic Josephson junction emitter

Kashiwagi

Yamamoto

Kitamura

et al. 2015

Applied Physics Letters

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“…Due to the variable size of the hot spot and the temperature rise caused by the self-heating, the emission frequency can be tuned over a wide range of up to 700 GHz [18]. So far, emitted by one device power up to 30 W was obtained [20], [21]; recently, by synchronizing the emissions from a three-mesa array, power as high as 610 W was reported [22]. These are very encouraging results, although for most practical application phase-locking of the cryogenic oscillator to a stable reference is required.…”

Section: (A)]mentioning

confidence: 98%

Superconducting Integrated Terahertz Spectrometers

Koshelets

Дмитриев

Faley

et al. 2015

IEEE Trans. THz Sci. Technol.

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A superconducting integrated receiver (SIR) comprises all of the elements needed for heterodyne detection on a single chip. Light weight and low power consumption combined with nearly quantum-limited sensitivity and a wide tuning range of the superconducting local oscillator make the SIR a perfect candidate for many practical applications. For the first time, we demonstrated the capabilities of the SIR technology for remote operation under harsh environmental conditions and for heterodyne spectroscopy at atmospheric limb sounding on board a high-altitude balloon. Recently, the SIR was successfully implemented for the first spectral measurements of THz radiation emitted from intrinsic Josephson junction stacks (BSCCO mesa) at frequencies up to 750 GHz; linewidth below 10 MHz has been recorded in the high bias regime. The phase-locked SIR has been used for the locking of the BSCCO oscillator under the test. To extend the operation range of the SIR well above 1 THz, a new technique for fabrication of high-quality SIS tunnel junctions with gap voltage Vg up to 5.3 mV has been developed. Integration of a superconducting high-harmonic phase detector with a cryogenic oscillator opens a possibility for efficient phase locking of the sources with free-running linewidth up to 30 MHz that is important both for BSCCO mesa and NbN/MgO/NbN oscillators.

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“…Recently multiple mesas were fabricated atop of BSCCO single crystal, where much strong radiation power was achieved by synchronizing these mesas. 44,45 In Ref. 46 it is demonstrated that the mesas can be synchronized via the plasma oscillation in the basal crystal.…”

Section: Discussionmentioning

confidence: 99%

Mutual synchronization of two stacks of intrinsic Josephson junctions in cuprate superconductors

Lin

2014

Journal of Applied Physics

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Certain high-T c cuprate superconductors, which naturally realize a stack of Josephson junctions, thus can be used to generate electromagnetic waves in the terahertz region. A plate-like single crystal with 10 4 junctions without cavity resonance was proposed to achieve strong radiation. For this purpose, it is required to synchronize the Josephson plasma oscillation in all junctions. In this work, we propose to use two stacks of junctions shunted in parallel to achieve synchronization. The two stacks are mutually synchronized in the whole IV curve, and there is a phase shift between the plasma oscillation in the two stacks. The phase shift is nonzero when the number of junctions in different stacks is the same, while it can be arbitrary when the number of junctions is different. This phase shift can be tuned continuously by applying a magnetic field when all the junctions are connected by superconducting wires.

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Powerful terahertz emission from Bi2Sr2CaCu2O8+δ mesa arrays

Cited by 120 publications

References 35 publications

Generation of electromagnetic waves from 0.3 to 1.6 terahertz with a high-Tc superconducting Bi2Sr2CaCu2O8+δ intrinsic Josephson junction emitter

Generation of electromagnetic waves from 0.3 to 1.6 terahertz with a high-Tc superconducting Bi2Sr2CaCu2O8+δ intrinsic Josephson junction emitter

Superconducting Integrated Terahertz Spectrometers

Mutual synchronization of two stacks of intrinsic Josephson junctions in cuprate superconductors

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