Two-Photon Induced Fluorescence and Lasing of Microdroplets.
Abstract
The feasibility of using two photon induced fluorescence of amino acids is examined for its potential as a detection technique for biological aerosols. The research was motivated by the problem of spectral discrimination encountered in fluorescence applications. Two separate experiments were performed: (1) two-photon induced fluorescence of the three aromatic amino acids and (2) two-photon pumped lasing in spherical droplets doped with rhodomine 6g dye. It was found in the first experiment that there is greater specificity for two-photon fluorescence than for one-photon induced fluorescence; however, the effect is very weak. The lasing experiment indicated that lasing is intense, but there can only be a short distance from the source to the droplet.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1995
- Accession Number
- ADA310728
Entities
People
- Alfred S. Kwok
- James B. Gillespie
- Richard K. Chang
Organizations
- United States Army Research Laboratory