Dual-wavelength transfer standard for laser peak-power measurement

Published

May 9, 2011

Author(s)

Rodney W. Leonhardt, Daniel King

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 Title

SPIE Defense, Security, and Sensing

Volume

8014

Conference Dates

April 25-29, 2011

Conference Location

Orlando, FL

Pub Type

Conferences

Download Paper

https://doi.org/10.1117/12.883464

Keywords

dual wavelength, infrared, laser peak-power, low-level, transfer standard

Citation

Leonhardt, R. and King, D. (2011), Dual-wavelength transfer standard for laser peak-power measurement, SPIE Defense, Security, and Sensing, Orlando, FL, [online], https://doi.org/10.1117/12.883464 (Accessed October 22, 2025)