Intracavity thermal lensing has been used to convert a cw dye laser to pulsed operation. The pulse width is a measure of the absorptivity of the solution in the cell. Experimental data are presented to show how this technique can be used to measure the absorptivity of a pure solvent and the concentration of a solute. The absorptivities (base e) of water, CH3OH, CH3COCH3, and CCl4 were determined to be, respectively, (1.24 ± 0.17) × 10−3, (1.01 ± 0.07) × 10−3, (1.74 ± 0.09) × 10−4, and (3.95 ± 3.40) × 10−6 cm−1. For CCl4 in a 10-cm sample cell, the minimum detectable absorptivity is ~4 × 10−6 cm−1.
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J. Timmermans, Physico-Chemical Constants of Pure Organic Compounds (Elsevier, New York, 1950).
R. C. Weast, Ed., Handbook of Chemistry and Physics 48th Edition (Chemical Rubber Co., Cleveland, 1967).
J. Stone, J. Opt. Soc. Am. 62, 327 (1972). International Critical Tables (McGraw-Hill, New York, 1929), Vol. 5, p. 107.
J. Timmermans, Physico-Chemical Constants of Binary Systems in Concentrated Solutions (Interscience, New York, I960).
Determined by averaging the values of dn0/dT for water and glycerol.
Parameters for the first seven solvents were computed using the physical constants from Table I. Parameters for the remaining solvents were computed using the constants from J. Stone, J. Opt. Soc. Am. 62, 327 (1972) and thermal conductivity values from Handbook of Chemistry and Physics, R. C. Weast, Ed. (Chemical Rubber Co., Cleveland, 1967).
Correlation coefficient = r2.
R. C. Smith and K. S. Baker, Appl. Opt. 20, 177 (1981) and references therein.
R. L. Swofford, M. E. Long, M. S. Burberry, and A. C. Albrecht, J. Chem. Phys. 66, 664 (1977). This value has been revised upward by a factor of 2.9 (see text).
J. Stone, J. Opt. Soc. Am. 62, 327 (1972).
J. Timmermans, Physico-Chemical Constants of Pure Organic Compounds (Elsevier, New York, 1950).
R. C. Weast, Ed., Handbook of Chemistry and Physics 48th Edition (Chemical Rubber Co., Cleveland, 1967).
J. Stone, J. Opt. Soc. Am. 62, 327 (1972). International Critical Tables (McGraw-Hill, New York, 1929), Vol. 5, p. 107.
J. Timmermans, Physico-Chemical Constants of Binary Systems in Concentrated Solutions (Interscience, New York, I960).
Determined by averaging the values of dn0/dT for water and glycerol.
Parameters for the first seven solvents were computed using the physical constants from Table I. Parameters for the remaining solvents were computed using the constants from J. Stone, J. Opt. Soc. Am. 62, 327 (1972) and thermal conductivity values from Handbook of Chemistry and Physics, R. C. Weast, Ed. (Chemical Rubber Co., Cleveland, 1967).
Correlation coefficient = r2.
R. C. Smith and K. S. Baker, Appl. Opt. 20, 177 (1981) and references therein.
R. L. Swofford, M. E. Long, M. S. Burberry, and A. C. Albrecht, J. Chem. Phys. 66, 664 (1977). This value has been revised upward by a factor of 2.9 (see text).
J. Stone, J. Opt. Soc. Am. 62, 327 (1972).