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Sensitive bolometers using high-Tc superconducting thermometers for wavelengths 20–300 μm (1993)

Verghese, S. ; Richards, P. L. ; Sachtjen, S. A. ; [et al.]

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 74 (1993), S. 4251-4253

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ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: Two types of sensitive high-Tc bolometer have been fabricated on 20-μm-thick sapphire substrates with YBa2Cu3O7−δ thin film transition edge thermometers. The sensitivity of both devices is superior to commercially available, room temperature pyroelectric detectors. A 1×1 mm bolometer with a radiation absorber of gold black smoke has a noise equivalent power NEP=2.4×10−11 W/Hz1/2 at 10 Hz and has useful sensitivity over wavelengths 20–100 μm. A 3×3 mm bolometer with a Bi film radiation absorber has NEP=3.6×10−10 W/Hz1/2 at 10 Hz and has useful sensitivity over wavelengths 100–300 μm. Water vapor transmittance spectra were measured to demonstrate the sensitivity of both devices.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.354435

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