Detection and sizing of small particles in an open cavity gas laser.


The open cavity of a He-Ne gas laser oscillating at 632.8 microm was used to detect and size aerosol particles. This was done for two transverse modes of the laser, the TEM(oo) and TEM(o1) *. Plots of particle extinction loss vs laser power are shown to agree with the theory for an inhomogeneously broadened line under the condition of small saturated gain… (More)
DOI: 10.1364/AO.11.001515


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