Enhancement of the lasing efficiency of vitamin B2 in a highly polar organic solvent via DNA-lipid complex

Woohyun Jung, Byung Joo Kong, Seongjin Hong, Taeoh Kim, Kyunghwan Oh

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


We experimentally demonstrated a green liquid laser at the wavelength of 570 nm, utilizing the optical gain of vitamin B2 in a highly polar organic solvent, and proposed an efficient method to enhance its lasing efficiency by adding DNA-lipid complex (DNA-CTMA) in the solution. Optical properties of vitamin B2 in the hexafluoro-2-propanol solvents were investigated by adding various amounts of DNACTMA in terms of the UV-visible absorbance, the visible emission, and the fluorescence lifetime. A Fabry-Perot cavity was built to obtain the laser oscillation at 570 nm using a pulsed pump source at the wavelength of 450 nm, 5 ns pulse duration, and 10 Hz repetition rate. By adding DNA-CTMA, both the output power and slope efficiency were enhanced along with a significant reduction of the lasing threshold pump power. The proposed scheme could open new potential for highly efficient biolasers.

Original languageEnglish
Pages (from-to)4021-4024
Number of pages4
JournalOptics Letters
Issue number16
Publication statusPublished - 2018 Aug 15

Bibliographical note

Funding Information:
Funding. National Research Foundation of Korea (NRF) (NRF-2012M3A7B4049800); Ministry of Science, ICT and Future Planning (MSIP) (IITP 2014-3-00524).

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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