NDLI: A direct method of thermal time constant measurement for lithium tantalate based terahertz pryroelectric detectors

Content Provider	Springer Nature Link
Author	Li, Weizhi Liang, Zhiqing Wang, Jun Gou, Jun Jiang, Yadong
Copyright Year	2016
Abstract	Thermal time constant (τ $_{ th }$) is one of the most important parameters of pyroelectric detectors (PEDs). However, unlike other parameters such as voltage responsivity (R $_{ v }$), noise equivalent power and specific detectivity (D*), measurement of τ $_{ th }$ of lithium tantalate (LT) based PEDs was seldom reported in literatures. In this work, a convenient direct method for the measurement of τ $_{ th }$ was presented according to theoretical analysis and simulation result. Afterwards, this method was successfully applied to practical measurement of a homemade current mode terahertz (THz) LT based PED, of which τ $_{ th }$ was measured to be about 882 ms. To verify the measured result, τ $_{ th }$ was also calculated from the measured voltage-time curves according to its theoretical expression, which agrees well with the measured one. Compared with indirect measurement of τ $_{ th }$ through frequency response curves of PEDs, the direct method is simpler and more accurate. Furthermore, this method suggested an easy way for the measurement of pyroelectric coefficient of PEDs.
Starting Page	9996
Ending Page	10002
Page Count	7
File Format	PDF
ISSN	09574522
Journal	Journal of Materials Science: Materials in Electronics
Volume Number	27
Issue Number	10
e-ISSN	1573482X
Language	English
Publisher	Springer US
Publisher Date	2016-06-02
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Optical and Electronic Materials Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Biomaterials Biophysics Condensed Matter Physics Electronic, Optical and Magnetic Materials Bioengineering Electrical and Electronic Engineering Biomedical Engineering

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