Terahertz Direct Detection Characteristics of a Superconducting NbN Bolometer

doi:10.1088/0256-307X/28/1/010702

Chin. Phys. Lett.

2011, Vol. 28

Issue (1): 010702 DOI: 10.1088/0256-307X/28/1/010702

GENERAL

Terahertz Direct Detection Characteristics of a Superconducting NbN Bolometer

REN Yuan^1,2, MIAO Wei¹, YAO Qi-Jun¹, ZHANG Wen¹, SHI Sheng-Cai^1**

¹Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008
²Graduate School of the Chinese Academy of Sciences, Beijing 100049

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REN Yuan, MIAO Wei, YAO Qi-Jun et al 2011 Chin. Phys. Lett. 28 010702

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Abstract We report the terahertz direct detection characteristics of a spiral antenna coupled NbN superconducting hot-electron bolometer (HEB) at a bath temperature of 4.2 K. Thermal conductance determined from resistance transition curves with different bias currents is found to be 3×10⁻⁷ W/K. The device shows a read-out circuit limited noise equivalent power (NEP) of 4.5×10⁻¹² W/Hz^1/2 at 4.2 K with a home-made transimpedance amplifier operating at room temperature.

Keywords: 07.57.Kp 05.40.Ca

Received: 17 August 2010 Published: 23 December 2010

PACS:	07.57.Kp	(Bolometers; infrared, submillimeter wave, microwave, and radiowave receivers and detectors)
	05.40.Ca	(Noise)

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https://cpl.iphy.ac.cn/10.1088/0256-307X/28/1/010702 OR https://cpl.iphy.ac.cn/Y2011/V28/I1/010702

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	REN Yuan
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	SHI Sheng-Cai

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