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1. IR-enhanced Si reference detectors for 1-step scale transfers from 300 nm to 1000 nm
Published: 11/20/2014
Authors: George P Eppeldauer, Thomas C Larason, Jeanne M Houston, Robert Edward Vest, Uwe Arp, Howard W Yoon
Abstract: IR-enhanced Si photodiodes have improved radiometric and electronic characteristics as compared to other widely used Si photodiodes and can be used as responsivity standards in the wavelength range from 300 nm to 1000 nm. Their low predicted uncerta ...

2. NIST traceable measurements of radiance and luminance levels of night-vision-goggle test-instruments
Published: 5/7/2014
Authors: George P Eppeldauer, Vyacheslav B Podobedov
Abstract: In order to perform radiance and luminance level measurements of night-vision-goggle (NVG) test instruments, NIST developed new-generation transfer-standard radiometers (TR). The new TRs can perform low-level radiance and luminance measurements with ...

3. Development of in-situ calibration method for current-to-voltage converters for high-accuracy SI-traceable low-DC-current measurements
Published: 9/20/2013
Authors: George P Eppeldauer, Howard W Yoon, Dean G Jarrett, Thomas C Larason
Abstract: For photocurrent measurements with low uncertainties, wide-dynamic range reference current-to-voltage converters and a new converter calibration method have been developed at the National Institute of Standards and Technology (NIST). The high feedba ...

4. Evaluation of dome-input geometry for pyroelectric detectors
Published: 6/24/2013
Authors: Jinan Zeng, Leonard M Hanssen, George P Eppeldauer
Abstract: Dome-input pyroelectric radiometers with different black coatings were developed to extend the spectral responsivity scale from near infrared (NIR) to 20 μm. The reflective dome with shiny gold-coating has been known to be an efficient light t ...

5. Spectral responsivity based calibration of photometer and colorimeter standards
Published: 6/19/2013
Author: George P Eppeldauer
Abstract: Several new generation transfer- and working-standard illuminance meters and tristimulus colorimeters have been developed at the National Institute of Standards and Technology (NIST) to measure all kinds of light sources with low uncertainty. The spe ...

6. Standardization of Broadband UV Measurements
Published: 1/1/2013
Author: George P Eppeldauer
Abstract: The CIE standardized rectangular-shape UV response functions can be realized only with large spectral mismatch errors. The spectral power-distribution of UV sources is not standardized. Accordingly, the readings of different types of UV meters, even ...

7. Evaluation of optical radiation detectors in the range from 0.8 µm to 20 µm at the NIST infrared spectral calibration facility
Published: 11/26/2012
Authors: Vyacheslav B Podobedov, George P Eppeldauer, Thomas C Larason
Abstract: Analysis of multiple factors affecting the uncertainty of the absolute spectral responsivity of optical radiation detectors is presented. This includes both the validation of the radiometric scale of the infrared reference detectors and the scale ...

8. Spectral responsivity calibrations of two type pyroelectric radiometers using three different methods
Published: 8/15/2012
Authors: Jinan Zeng, George P Eppeldauer, Leonard M Hanssen, Vyacheslav B Podobedov
Abstract: Spectral responsivity calibrations of two different type pyroelectric radiometers have been made in infrared region up to 14 μm in power mode using three different calibration facilities at NIST. One pyroelectric radiometer is a temperature-cont ...

9. PV-MCT working standard radiometer
Published: 4/24/2012
Authors: George P Eppeldauer, Vyacheslav B Podobedov
Abstract: Sensitive infrared working-standard detectors with large active area are needed to extend the signal dynamic range of the National Institute of Standards and Technology (NIST) pyroelectric transfer-standards used for infrared spectral power responsiv ...

10. Matrix-based color measurement corrections of tristimulus colorimeters
Published: 4/20/2012
Authors: George P Eppeldauer, Z. T. Kosztyan, J. D. Schanda
Abstract: For image taking colorimetry the tristimulus technique is still the best practical method to keep the measurement time within reasonable limits. However, the achievable color measurement uncertainties for special sources can be significant because of ...

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