The photoacoustic technique has been used in conjunction with an optical transmission measurement to determine the fraction of light absorbed in cigarette and acetylene smoke aerosols. At 0.5145-µm wavelength,the absorption-to-extinction fraction is 0.01 ± 0.003 for cigarette smoke and is in excellent agreement with predictions from Mie theory for smoke particles having a refractive index of 1.45-0.00133i and a median diameter in the 0.15-0.65-µm range. For acetylene smoke the absorbed fraction was 0.85 ± 0.05.
© 1980 Optical Society of America
D. M. Roessler and F. R. Faxvog, "Photoacoustic determination of optical absorption to extinction ratio in aerosols," Appl. Opt. 19, 578-581 (1980)