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Random laser emission from whole blood as the active medium

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Abstract

We introduce a proof of concept for multimode random laser (RL) emission with fresh whole blood (WB) as the active medium. The experimental principle is adapted from RL emission using rhodamine 6G (R6G). We achieved conditions for fresh WB to fluoresce with stochastic amplification of stimulated emission of radiation. The random conditions are placed with ${{\rm SiO}_2}$ particles, suspended in isotonic solvent. The results we report are for: (1) R6G-RL, with 2 nm bandwidth centered at 567 nm, and (2) RL emission for WB at 969 nm and 437 nm, of sub-3 nm bandwidth. For validation purposes, we show that the pumping energy threshold for RL emission from blood is consistent with R6G-RL.

© 2021 Optical Society of America

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