Showing papers in "Optics Letters in 1976"
Journal Article•
TL;DR: A calorimeter for making absolute energy measurements of high power laser pulses is described, and volume absorbers for use with CO(2) lasers in the 9-11-microm range are discussed.
Abstract: A calorimeter for making absolute energy measurements of high power laser pulses is described. The calorimeter, based on volume absorption in a solid, is calibrated electrically and requires no window or vacuum environment. An error analysis is included giving the systematic and random errors of the instrument for a laser measurement. Briefly, the following performance is typical of the 32-mm x 32-mm aperture calorimeter: range 0.4-15-J; random error +/-0.2% (one standard deviation); systematic error +/-2.3%; and an upper operational limit of 3 J/cm(2). Most of the volume absorber documentation is applicable for 1.06 microm; however, the calorimeter should be useful from the near ir through the visible. Absorbers for use with CO(2) lasers in the 9-11-microm range are also discussed.
29 citations
Journal Article•
TL;DR: A convenient spectral reference detector for the visible to 12-microm region has been developed and the detector response is independent of wavelength to +/-1% over this spectral range.
Abstract: A convenient spectral reference detector for the visible to 12-microm region has been developed. The device consists of a large area PVF(2) pyroelectric detector enclosed in a hemispherical light trap. Based on theoretical and experimental evaluations, the detector response is independent of wavelength to +/-1% over this spectral range.
2 citations