Improvement of the optical imaging of objects in a strongly scattering medium by means of contrast-enhancing dyes

The problem of enhancing the contrast of optical images in a strongly scattering medium by means of luminescent and absorbing dyes, topical in laser tomography, is examined. Preparations based on diphthalocyanine compounds were selected on the grounds of their tropism and resistance to the action of...

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Bibliographic Details
Published inQuantum electronics (Woodbury, N.Y.) Vol. 29; no. 12; pp. 1099 - 1102
Main Authors Vorob'ev, Nikolai S, Podgaetskii, Vitalii M, Smirnov, A V, Tereshchenko, Sergei A, Tomilova, Larisa G
Format Journal Article
LanguageEnglish
Published Woodbury, NY IOP Publishing 31.12.1999
American Institute of Physics
Subjects
AQUEOUS SOLUTIONS
BIOLOGICAL MATERIALS
BODY FLUIDS
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CONTRAST MEDIA
DIAGNOSTIC TECHNIQUES
DISPERSIONS
DYES
ELECTROMAGNETIC RADIATION
EMISSION
FOOD
HOMOGENEOUS MIXTURES
INFRARED RADIATION
LASERS
LUMINESCENCE
MATERIALS
MILK
MIXTURES
NEODYMIUM LASERS
PHOTON EMISSION
RADIATION EFFECTS
RADIATIONS
SCATTERING
SOLID STATE LASERS
SOLUTIONS
TOMOGRAPHY
VISIBLE RADIATION
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Summary:The problem of enhancing the contrast of optical images in a strongly scattering medium by means of luminescent and absorbing dyes, topical in laser tomography, is examined. Preparations based on diphthalocyanine compounds were selected on the grounds of their tropism and resistance to the action of heat and light. Images with enhanced contrast in model scattering media (an aqueous solution of milk and margarine) were obtained in the IR region of the spectrum using the radiation of a picosecond neodymium laser. (laser applications and other topics in quantum electronics)
ISSN:1063-7818
1468-4799
DOI:10.1070/QE1999v029n12ABEH001639