Copper vapor laser acoustic thermometry system

Coherent light generators – Particular temperature control

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372 25, 372 56, 372 21, 372 38, H01S 304

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046972706

ABSTRACT:
A copper vapor laser (CVL) acoustic thermometry system is disclosed. The invention couples an acoustic pulse a predetermined distance into a laser tube by means of a transducer and an alumina rod such that an echo pulse is returned along the alumina rod to the point of entry. The time differential between the point of entry of the acoustic pulse into the laser tube and the exit of the echo pulse is related to the temperature at the predetermined distance within the laser tube. This information is processed and can provide an accurate indication of the average temperature within the laser tube.

REFERENCES:
Culick et al., "Acoustic Waves and Heating Due to Molecular Energy Transfer in an Electric Discharge CO Laser"; IEEE Jour. Quant. Electron, vol. QE-12, No. 10, Oct. 1976, p. 566.

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