Recent progress in research and development on micro-spherical lasers using conventional dye-doped solids and liquids, and dyes mixed in highly scattering media

Hiroshi Taniguchi; Shinji Tanosaki; Masahisa Nishiya; Balasigamani Devaraj; Humio Inaba

doi:10.1117/12.293451

1 November 1997 Recent progress in research and development on microspherical lasers using conventional dye-doped solids and liquids and dyes mixed in highly scattering media

Hiroshi Taniguchi, Shinji Tanosaki, Masahisa Nishiya, Balasigamani Devaraj, Humio Inaba

Author Affiliations +

Proceedings Volume 3176, Tunable Solid State Lasers; (1997) https://doi.org/10.1117/12.293451
Event: Tunable Solid State Lasers, 1996, Wroclaw, Poland

Abstract

Lasing characteristics of laser-active material-doped microdroplets containing highly scattering fat emulsion Intralipid-10 percent are studied experimentally. Noteworthy findings are than well-defined lasing threshold can be observed and appreciable magnitude-enhancement of emission intensity with suitable conditions of the Intralipid mixing ratio, in comparison with original neat-active-material- doped microdroplets. We present and discuss the measured results of input-output intensities for different Intralipid mixing ratios in these active material-soft scatterer system. It was found that almost no lasing neat- microdroplets can achieve lasing by substituting suitably certain amounts of the Intralipid causing multiple light scattering. Spectral measurements of light emission from the active material-Intralipid microdroplets show the tendency of spectral narrowing with the increase of the pumping intensity and with the optimum Intralipid concentration. It is our belief that the present results make this novel method of active material-Intralipid microsystem very attractive for a variety of future applications including diagnostic tools for highly sensitive detecting and identification of small quantity objects and species embedded or hidden in highly scattering media such as biological tissues and cellular structures.

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Hiroshi Taniguchi, Shinji Tanosaki, Masahisa Nishiya, Balasigamani Devaraj, and Humio Inaba "Recent progress in research and development on microspherical lasers using conventional dye-doped solids and liquids and dyes mixed in highly scattering media", Proc. SPIE 3176, Tunable Solid State Lasers, (1 November 1997); https://doi.org/10.1117/12.293451

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