Progress toward solid-state local oscillators at 1 THz

Crowe, T.W.; Grein, T.C.; Zimmermann, Ralph; Zimmermann, Peter

doi:10.1109/75.491507

Cited by 41 publications

(13 citation statements)

References 6 publications

(4 reference statements)

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“…In contrast, electronic sources in the terahertz region are scarce; if we put aside non solid-state sources like the power-hungry and heavy backward-wave oscillators (BWOs) that can work to about 1.2 THz, there is indeed only one proven solution: frequency multiplier chains from the microwave region to the terahertz [1], [11]. With current terahertz frequency multipliers, power is measured in microwatts rather than milliwatts.…”

Section: Introductionmentioning

confidence: 99%

A Frequency-Multiplied Source With More Than 1 mW of Power Across the 840–900-GHz Band

Maestrini

Ward

Gill

et al. 2010

IEEE Trans. Microwave Theory Techn.

115

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Abstract-We report on the design, fabrication, and characterization of an 840-900-GHz frequency multiplier chain that delivers more than 1 mW across the band at room temperature with a record peak power of 1.4 mW at 875 GHz. When cooled to 120 K, the chain delivers up to 2 mW at 882 GHz. The chain consists of a power amplifier module that drives two cascaded frequency triplers. This unprecedented output power from an electronic source is achieved by utilizing in-phase power-combining techniques. The first stage tripler uses four power-combined chips while the last stage tripler utilizes two power-combined chips. The source output was analyzed with a Fourrer transform spectrometer to verify signal purity.

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Section: Introductionmentioning

confidence: 99%

A Frequency-Multiplied Source With More Than 1 mW of Power Across the 840–900-GHz Band

Maestrini

Ward

Gill

et al. 2010

IEEE Trans. Microwave Theory Techn.

115

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show abstract

“…However, in 1992, this already mature technology was still unable to pass the 1 THz milestone [43]. Progress toward the terahertz region was reported by Crowe and Rüdiger Zimmerman [44] just before Zimmerman reached 1.135 THz in 1998 with an allsolid-state source that produced 40 μW of output power [45].…”

Section: Frequency Up-conversion Of Microwaves In Solid-state Diodesmentioning

confidence: 95%

Terahertz Frequency Metrology for Spectroscopic Applications: a Review

Consolino

Bartalini

Natale

2017

J Infrared Milli Terahz Waves

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We provide an overview on terahertz (THz) frequency metrology, starting from the nowadays available continuous wave THz sources, discussing their main features such as tunability, spectral purity, and frequency referencing to the primary frequency standards. A comparison on the achieved results in high-precision molecular spectroscopy is given and discussed, and finally, a special emphasis poses on the future developments of this upcoming field.

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“…Progress toward solid-state sources at 1 THz was reported in 1996 with a record 250 µW of power at 800 GHz produced by a ×2×3 frequency multiplier chain pumped by a Gunn oscillator [1]. This result was important, as it provided impetus to build the Heterodyne Instrument for the Far Infrared (HIFI) on board the Far InfraRed Space Telescope which was eventually launched as the Herschel Space Observatory in 2009 [2], [3].…”

Section: Introductionmentioning

confidence: 99%

Frequency tunable electronic sources working at room temperature in the 1 to 3 THz band

et al. 2012

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Frequency tunable electronic sources working at room temperature in the 1 to 3 THz band," Proc. ABSTRACTCompact, room temperature terahertz sources are much needed in the 1 to 3 THz band for developing multi-pixel heterodyne receivers for astrophysics and planetary science or for building short-range high spatial resolution THz imaging systems able to see through low water content and non metallic materials, smoke or dust for a variety of applications ranging from the inspection of art artifacts to the detection of masked or concealed objects. All solid-sate electronic sources based on a W-band synthesizer followed by a high-power W-band amplifier and a cascade of Schottky diode based THz frequency multipliers are now capable of producing more than 1 mW at 0.9THz, 50 μW at 2 THz and 18 μW at 2.6 THz without the need of any cryogenic system. These sources are frequency agile and have a relative bandwidth of 10 to 15%, limited by the high power W-band amplifiers. The paper will present the latest developments of this technology and its perspective in terms of frequency range, bandwidth and power.

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Progress toward solid-state local oscillators at 1 THz

Cited by 41 publications

References 6 publications

A Frequency-Multiplied Source With More Than 1 mW of Power Across the 840–900-GHz Band

A Frequency-Multiplied Source With More Than 1 mW of Power Across the 840–900-GHz Band

Terahertz Frequency Metrology for Spectroscopic Applications: a Review

Frequency tunable electronic sources working at room temperature in the 1 to 3 THz band

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