Thermal measuring and testing – Calorimetry – Total radiant energy or power measurement
Patent
1991-09-16
1992-09-01
Gregory, Bernarr E.
Thermal measuring and testing
Calorimetry
Total radiant energy or power measurement
374 35, G01K 1720
Patent
active
H00011029
ABSTRACT:
A laser calorimeter which operates by absorbing the energy of a laser beam directed through a lens at the front of the calorimeter. The calorimeter contains a absorbing medium with high absorbance characteristics at the laser wavelength in question. The absorbed laser energy is converted to heat. The device has a means for measuring the changes in temperature of the absorbing medium as well as a means for measuring the changes in pressure inside the calorimeter chamber. The absorbing medium is typically a liquid which also demonstrates preferable heat transfer characteristics. This in turn affords greater precision and a faster response time of the calorimeter when measuring the laser energy. A typical medium for such a device is a dimethylformamide solution which has extremely good absorbance characteristics for an optical path length of 0.015 inches at a laser wavelength of 1.064 microns.
REFERENCES:
patent: 2451724 (1948-10-01), Evans
patent: 2846647 (1958-08-01), MacPherson
patent: 3040252 (1962-06-01), Novak
patent: 3143703 (1964-08-01), Kraeuter
patent: 3600669 (1971-08-01), McClain
patent: 3670570 (1972-06-01), Briones
patent: 3747401 (1973-07-01), Johnson
patent: 4223264 (1980-09-01), Yamamura et al.
patent: 4325252 (1982-04-01), Miller et al.
patent: 4524624 (1985-06-01), Di Noia et al.
patent: 4968150 (1990-11-01), Mathews et al.
Clogston, A., abstract of Ser. No. 608,291, filed Aug. 1, 1945.
Meahl, H., abstract of Ser. No. 706,894, filed Oct. 31, 1946.
Damon, E. et al., "A Liquid Calorimeter for High-Energy Lasers," Applied ics, vol. 2, No. 2, pp. 163-164 (Feb.1963).
Scott, B., "Laser Energy Measurements with a Liquid Absorption Cell," J. Sci. Instrum., vol. 43, pp. 940-942 (1966).
Wharton, C., "Calorimetric Measurements of Single-Pulse High Power Microwaves in Oversized Waveguides," Dev. Sci. Instrum., vol. 57, No. 5, pp. 855-858 (May 1986).
Gunn, S., "Calorimetric Measurements of Laser Energy and Power," J. Phys. E; Scientific Instruments, vol. 6, No. 2, pp. 105-114 (Feb. 1973).
Rasmussen, A., "Laser Energy and Power Measurements with a Double Reflecting Plate Calorimeter," Rev. Sci. Instrum., vol. 41, No. 10, pp. 1479-1484 (Oct. 1970).
Gilbert Harvey A.
Gregory Bernarr E.
Sliwka Melvin J.
The United States of America as represented by the Secretary of
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