Night sky spectral emission measurements (λ0.9–2.3 μm) using a field-widened interferometer–spectrometer

Allan J. Steed; Doran J. Baker

doi:10.1364/AO.18.003386

Applied Optics
Vol. 18,
Issue 20,
pp. 3386-3389
(1979)
•https://doi.org/10.1364/AO.18.003386

Night sky spectral emission measurements (λ0.9–2.3 μm) using a field-widened interferometer–spectrometer

Allan J. Steed and Doran J. Baker

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Allan J. Steed and Doran J. Baker, "Night sky spectral emission measurements (λ0.9–2.3 μm) using a field-widened interferometer–spectrometer," Appl. Opt. 18, 3386-3389 (1979)

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Abstract

Measurements of atmospheric near-IR emissions using a field-of-view compensated interferometer are summarized, and an airglow atlas covering the λ0.9-2.3-μm spectral range is given.

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	Ge detector (0.9–1.6 μm)	Si:Bi detector (1.35–2.3 μm)
Free spectral range (cm⁻¹)	6250–10,600	4350–7400
Collecting aperture (cm diam)	6	6
Field of view (full angle)(°)	9	12
Throughput (A Ω)(cm sr)	0.6	1
Resolution (max)(cm⁻¹)	2	2
NESR (25-sec scan)(W cm⁻² Sr⁻¹ cm)	4.4 × 10⁻¹⁴ at 1.4 μm	2 × 10⁻¹³ at 2.5 μm
Detector size (mm)	5 diam	7 × 7
Detector NEP (peak)(W/Hz^1/2)	1.110–14 at 1.43 μm	1 × 10⁻¹³ at 2.5 μm
Detector bias voltage (V)	Not applicable	3.0
Detector cryogen	Liquid nitrogen	Liquid helium
Optics temperature (K)	Ambient	77
Detector hold time (h)	7	2–3

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Applied Optics