Abstract

We have designed and built a pyroelectric optical detector for use as a transfer standard for the calibration of optical power meters. The pyroelectric element is made from lithium tantalate (LiTaO3). Gold black is used as the optical absorber in a multiple reflection wedge-shaped trap structure, with a 5-mm diameter input aperture and an f/4 field-of-view. The detector’s spatial responsivity varies less than 1%. The responsivity as a function of wavelength varies less than 1% over a range from 0.45–1.55 µm and less than 4% from 1.55–10.6 µm. The measured noise equivalent power (NEP) is 5 × 10−8 W/Hz1/2. For this wavelength range and detector area, the measured NEP and spatial uniformity represents a significant improvement over comparable predecessors.

© 1997 Optical Society of America

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References

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  1. R.L. Peterson et al., “Analysis of response of pyroelectric optical detectors,” J. Appl. Phys. 45 (8), (1974).
    [Crossref]
  2. D.J. Advena et al., “Deposition and characterization of far-infrared absorbing gold black films,” Appl. Opt. 32, (7), (1993).
    [Crossref] [PubMed]
  3. W.R. Blevin, W.J. Brown, “Black coatings for absolute radiometers,” Metrologia 2 (4),(1966).
    [Crossref]
  4. G.W. Day et al., “Spectral reference detecto for the visible to 12-µm region; convenient, spectrally flat,” Appl. Opt. 15 (7), (1976).
    [Crossref] [PubMed]
  5. E.D. West et al., “A reference caolorimeter for laser energy measurements,” J. Res. Nat. Bur. Stand. (U.S.), 76A (1), 13 (1972).
    [Crossref]

1993 (1)

D.J. Advena et al., “Deposition and characterization of far-infrared absorbing gold black films,” Appl. Opt. 32, (7), (1993).
[Crossref] [PubMed]

1976 (1)

G.W. Day et al., “Spectral reference detecto for the visible to 12-µm region; convenient, spectrally flat,” Appl. Opt. 15 (7), (1976).
[Crossref] [PubMed]

1974 (1)

R.L. Peterson et al., “Analysis of response of pyroelectric optical detectors,” J. Appl. Phys. 45 (8), (1974).
[Crossref]

1972 (1)

E.D. West et al., “A reference caolorimeter for laser energy measurements,” J. Res. Nat. Bur. Stand. (U.S.), 76A (1), 13 (1972).
[Crossref]

1966 (1)

W.R. Blevin, W.J. Brown, “Black coatings for absolute radiometers,” Metrologia 2 (4),(1966).
[Crossref]

Advena, D.J.

D.J. Advena et al., “Deposition and characterization of far-infrared absorbing gold black films,” Appl. Opt. 32, (7), (1993).
[Crossref] [PubMed]

Blevin, W.R.

W.R. Blevin, W.J. Brown, “Black coatings for absolute radiometers,” Metrologia 2 (4),(1966).
[Crossref]

Brown, W.J.

W.R. Blevin, W.J. Brown, “Black coatings for absolute radiometers,” Metrologia 2 (4),(1966).
[Crossref]

Day, G.W.

G.W. Day et al., “Spectral reference detecto for the visible to 12-µm region; convenient, spectrally flat,” Appl. Opt. 15 (7), (1976).
[Crossref] [PubMed]

Peterson, R.L.

R.L. Peterson et al., “Analysis of response of pyroelectric optical detectors,” J. Appl. Phys. 45 (8), (1974).
[Crossref]

West, E.D.

E.D. West et al., “A reference caolorimeter for laser energy measurements,” J. Res. Nat. Bur. Stand. (U.S.), 76A (1), 13 (1972).
[Crossref]

Appl. Opt. (2)

D.J. Advena et al., “Deposition and characterization of far-infrared absorbing gold black films,” Appl. Opt. 32, (7), (1993).
[Crossref] [PubMed]

G.W. Day et al., “Spectral reference detecto for the visible to 12-µm region; convenient, spectrally flat,” Appl. Opt. 15 (7), (1976).
[Crossref] [PubMed]

J. Appl. Phys. (1)

R.L. Peterson et al., “Analysis of response of pyroelectric optical detectors,” J. Appl. Phys. 45 (8), (1974).
[Crossref]

J. Res. Nat. Bur. Stand. (U.S.) (1)

E.D. West et al., “A reference caolorimeter for laser energy measurements,” J. Res. Nat. Bur. Stand. (U.S.), 76A (1), 13 (1972).
[Crossref]

Metrologia (1)

W.R. Blevin, W.J. Brown, “Black coatings for absolute radiometers,” Metrologia 2 (4),(1966).
[Crossref]

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Figures (2)

Figure 1
Figure 1

Wedge-trap configuration with ray tracing lines inside the trap cavity.

Figure 2
Figure 2

Relative spectral responsivity of wedge-trap detector.

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