The molecular structure of surfactant (a) CTMA and (b) BTMA. (c)The experimental setup of ASE measurement.
The absorption and PL spectra of different biopolymer systems. Inset: concentration of dye vs PL intensity and peak wavelength.
Output spectra of different biopolymer systems under different pumping energy densities. Inset: A photograph of sample of DNA-BTMA when the ASE occurred where the amplified light was emitted from the sample edge.
Threshold and FWHM vs energy density of DNA-CTMA and DNA-BTMA.
Normalized ASE output intensity as a function of laser pulses at a repetition rate of 10 Hz.
The energy diagram explaining energy transfer between DNA-surfactant biopolymer and dye molecules.
Optical properties of dye-doped DNA biopolymers.
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