Share Email Print

Proceedings Paper

Effect of different laser irradiation on the dysentery bacilli
Author(s): Lin Ou; Rong Chen; Yanjiao Chen; Depin Li; Caixia Wen
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

The S. flexnesi, which have high drug-resistance especially in Cm, Sm, Tc, SD, were irradiated by Ar+ laser at 488 nm and semiconductor laser at 808 nm. The experiment results have shown that both Ar+ laser and semiconductor laser with power density of 1.7 w/cm2 and irradiation dose of 2000 J/cm2 can conduce to the bacterial lethality and increase the mutation rates of the bacterial drug-sensitivity, and 'Colony Count' method have the superiority over the 'Inhibacteria Ring' method. At the mean time it further indicate that the high power semiconductor laser would play an important role in the sciences of laser biological medicine. But the effect of the near infrared semiconductor laser is far lower than that of Ar+ laser of shorter wavelength at the same irradiation dose. It is clear that the output and irradiation dose of near infrared semiconductor laser shall be increased in order to get the same rates of the bacterial lethality and the drug-sensitivity mutation as Ar+ laser's.

Paper Details

Date Published: 7 August 1998
PDF: 4 pages
Proc. SPIE 3548, Biomedical Optics and Lasers: Diagnostics and Treatment, (7 August 1998); doi: 10.1117/12.317877
Show Author Affiliations
Lin Ou, Fujian Normal Univ. (China)
Rong Chen, Fujian Normal Univ. (China)
Yanjiao Chen, Fujian Normal Univ. (China)
Depin Li, Fujian Normal Univ. (China)
Caixia Wen, Fujian Medical Univ. (China)

Published in SPIE Proceedings Vol. 3548:
Biomedical Optics and Lasers: Diagnostics and Treatment
Junheng Li M.D.; James A. Harrington, Editor(s)

© SPIE. Terms of Use
Back to Top