Broadly tunable and dual-wavelength polarity amplified Nile red laser

We have reported a broadly tunable and dual-wavelength polarity amplified Nile red laser system. Combined with the method of traditional grating tuning, the broadband wavelength tuning could be realized by changing the polarity of the solvents in which Nile red dissolved, which would extend the family of organic dyes used as laser gain medium and play an important role in laser display technology as laser source. Then the dual-wavelength emission was obtained by pumping two distinct different dye solutions in series. The realization of the dual-wavelength lasing would open up an avenue to detection amplification technology, which also provided an alternative way to analyze trace amount of substances.