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Measurement of Terahertz Optical-Beat Frequency Using High-Order Harmonics of Microwave in a Photoconductive Device
Joint Authors
Hidaka, Takehiko
Sato, Koki
Murasawa, Kengo
Source
Advances in Optical Technologies
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-06-15
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
A method for measuring frequencies of the terahertz (THz) radiation emitted by the antenna mounted on the photoconductive (PC) device is presented.
Two laser beams with slightly different frequencies irradiate the PC device, producing a beat current of 1 THz in the photocurrent.
A microwave signal is applied to the antenna electrode.
The frequency of the THz wave is measured using the homodyne detection of the optical beat with the high-order harmonics of the microwave.
It is being investigated that the high-order harmonics are produced by the PC device owing to its nonlinearity.
Periodic peaks generated by the homodyne detection were observed in the photocurrent, as the microwave was swept from 16 to 20 GHz with a power of −40 dBm.
Using the peak frequencies, the THz-wave frequency was determined to be 1030.3±3.73 GHz.
The measurement error is estimated to be less than 0.43 GHz.
The proposed method realizes a compact frequency meter in the THz region.
American Psychological Association (APA)
Murasawa, Kengo& Sato, Koki& Hidaka, Takehiko. 2011. Measurement of Terahertz Optical-Beat Frequency Using High-Order Harmonics of Microwave in a Photoconductive Device. Advances in Optical Technologies،Vol. 2011, no. 2011, pp.1-8.
https://search.emarefa.net/detail/BIM-455704
Modern Language Association (MLA)
Murasawa, Kengo…[et al.]. Measurement of Terahertz Optical-Beat Frequency Using High-Order Harmonics of Microwave in a Photoconductive Device. Advances in Optical Technologies No. 2011 (2011), pp.1-8.
https://search.emarefa.net/detail/BIM-455704
American Medical Association (AMA)
Murasawa, Kengo& Sato, Koki& Hidaka, Takehiko. Measurement of Terahertz Optical-Beat Frequency Using High-Order Harmonics of Microwave in a Photoconductive Device. Advances in Optical Technologies. 2011. Vol. 2011, no. 2011, pp.1-8.
https://search.emarefa.net/detail/BIM-455704
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-455704