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Publication Citation: Dual-wavelength transfer standard for laser peak-power measurement

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Author(s): Rodney W. Leonhardt; Daniel King;
Title: Dual-wavelength transfer standard for laser peak-power measurement
Published: May 09, 2011
Abstract: The National Institute of Standards and Technology (NIST) and the Naval Surface Warfare Center ‹ Corona Division (NSWC) have jointly developed a low-level peak-power radiometer (D-ESR) which functions as a transfer standard for measuring laser pulses at wavelengths of 1.06 and 1.55 υm. The peak-power irradiance range is from 500 pW/cm2 to 50 υW/cm2 within the wavelength range of 1.54 to 1.58 υm. A similar peak-power range is covered at a wavelength of 1.06 υm. The measurement range is covered by using smaller apertures or a neutral density filter to reach the highest peak-powers. The D-ESR radiometer is based on a custom fabricated InGaAs avalanche photodiode (APD) detector/preamplifier module. The light collecting optical system has a maximum aperture of approximately 125 cm2. The D-ESR is able to measure Gaussian pulse durations from 4 to 400 ns. The output is a negative going pulse waveform which is measured with an oscilloscope. The total uncertainty of a calibrated D-ESR radiometer is approximately 9 percent (k=2).
Proceedings: SPIE Defense, Security, and Sensing
Volume: 8014
Pages: 10 pp.
Location: Orlando, FL
Dates: April 25-29, 2011
Keywords: dual wavelength; infrared; laser peak-power; low-level; transfer standard
Research Areas: Optoelectronics, Instrumentation
DOI: http://dx.doi.org/10.1117/12.883464  (Note: May link to a non-U.S. Government webpage)