Highly sensitive coherent detection of terahertz waves at room temperature using a parametric process

Ruixiang Guo; Seigo Ohno; Hiroaki Minamide; Tomofumi Ikari; Hiromasa Ito

doi:10.1063/1.2953452

Highly sensitive coherent detection of terahertz waves at room temperature using a parametric process

Ruixiang Guo, Seigo Ohno, Hiroaki Minamide, Tomofumi Ikari, Hiromasa Ito

Research output: Contribution to journal › Article › peer-review

64 Citations (Scopus)

Abstract

We report the experimental results of coherent detection of narrow-linewidth nanosecond terahertz radiation at room temperature using frequency conversion in a nonlinear MgO:LiNbO₃ crystal. Mixing the terahertz radiation with a near-infrared intense pump pulse results in the excitation and amplification of the difference-frequency component, which is detected with an InGaAs-based photodiode. We demonstrate this method in a fast and very sensitive terahertz wave detector. The detector is capable of capturing the temporal profile of terahertz pulses with nanosecond resolution, and is at least one order more sensitive than a typical liquid-He-cooled Si bolometer for detecting nanosecond pulsed terahertz wave beams.

Original language	English
Article number	021106
Journal	Applied Physics Letters
Volume	93
Issue number	2
DOIs	https://doi.org/10.1063/1.2953452
Publication status	Published - 2008 Jul 14
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2953452

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title = "Highly sensitive coherent detection of terahertz waves at room temperature using a parametric process",

abstract = "We report the experimental results of coherent detection of narrow-linewidth nanosecond terahertz radiation at room temperature using frequency conversion in a nonlinear MgO:LiNbO3 crystal. Mixing the terahertz radiation with a near-infrared intense pump pulse results in the excitation and amplification of the difference-frequency component, which is detected with an InGaAs-based photodiode. We demonstrate this method in a fast and very sensitive terahertz wave detector. The detector is capable of capturing the temporal profile of terahertz pulses with nanosecond resolution, and is at least one order more sensitive than a typical liquid-He-cooled Si bolometer for detecting nanosecond pulsed terahertz wave beams.",

author = "Ruixiang Guo and Seigo Ohno and Hiroaki Minamide and Tomofumi Ikari and Hiromasa Ito",

note = "Funding Information: The authors thank Professor Ajay Nahata of the University of Utah for his valuable discussions. Polishing and dielectric coating of the crystals were performed by T. Shoji and C. Takyu, technicians at RIKEN and at Tohoku University, respectively. Mechanical processing was performed by A. Kudo at PAX. We thank them all for their helpful cooperation. This study was supported in part by a grant-in-aid for exploratory research (No. 19656102) from the Japan Society for the Promotion of Science. ",

year = "2008",

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doi = "10.1063/1.2953452",

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T1 - Highly sensitive coherent detection of terahertz waves at room temperature using a parametric process

AU - Guo, Ruixiang

AU - Ohno, Seigo

AU - Minamide, Hiroaki

AU - Ikari, Tomofumi

AU - Ito, Hiromasa

N1 - Funding Information: The authors thank Professor Ajay Nahata of the University of Utah for his valuable discussions. Polishing and dielectric coating of the crystals were performed by T. Shoji and C. Takyu, technicians at RIKEN and at Tohoku University, respectively. Mechanical processing was performed by A. Kudo at PAX. We thank them all for their helpful cooperation. This study was supported in part by a grant-in-aid for exploratory research (No. 19656102) from the Japan Society for the Promotion of Science.

PY - 2008/7/14

Y1 - 2008/7/14

N2 - We report the experimental results of coherent detection of narrow-linewidth nanosecond terahertz radiation at room temperature using frequency conversion in a nonlinear MgO:LiNbO3 crystal. Mixing the terahertz radiation with a near-infrared intense pump pulse results in the excitation and amplification of the difference-frequency component, which is detected with an InGaAs-based photodiode. We demonstrate this method in a fast and very sensitive terahertz wave detector. The detector is capable of capturing the temporal profile of terahertz pulses with nanosecond resolution, and is at least one order more sensitive than a typical liquid-He-cooled Si bolometer for detecting nanosecond pulsed terahertz wave beams.

AB - We report the experimental results of coherent detection of narrow-linewidth nanosecond terahertz radiation at room temperature using frequency conversion in a nonlinear MgO:LiNbO3 crystal. Mixing the terahertz radiation with a near-infrared intense pump pulse results in the excitation and amplification of the difference-frequency component, which is detected with an InGaAs-based photodiode. We demonstrate this method in a fast and very sensitive terahertz wave detector. The detector is capable of capturing the temporal profile of terahertz pulses with nanosecond resolution, and is at least one order more sensitive than a typical liquid-He-cooled Si bolometer for detecting nanosecond pulsed terahertz wave beams.

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M1 - 021106

ER -

Highly sensitive coherent detection of terahertz waves at room temperature using a parametric process

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