Oxygen-dependent auto-oscillations of water luminescence triggered by the 1264 nm radiation
Related Experiment Video
Updated: Jun 1, 2026

Luminescence Lifetime Imaging of O2 with a Frequency-Domain-Based Camera System
Published on: December 16, 2019
Sergey V Gudkov1, Vadim I Bruskov, Maksim E Astashev
1Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow Region, 142290 Russia.
Abstract:
A 5-min exposure of air-saturated bidistilled water to low-intensity laser infrared radiation at the wavelength of the electronic transition of dissolved oxygen to the singlet state ((3)∑(g)(-)→ (1)Δ(g)) induces, after a long latent period, auto-oscillations of water luminescence in the blue-green region, which last many hours. Laser irradiation causes the accumulation of hydrogen peroxide, which depends on the concentration of dissolved oxygen. The auto-oscillations do not arise if water is irradiated beyond the oxygen absorption band and if the oxygen is removed from water. The wavelet transform analysis of luminescence records indicates that there are two characteristic periods of pulsations of about 300 and 1150 s. The results obtained suggest that auto-oscillations are triggered by photoinduced singlet oxygen (1)Δ(g), and this phenomenon is closely related to formation of hydrogen peroxide.
Related Concept Videos
Photoluminescence: Fluorescence and Phosphorescence
A pair of electrons in a...
Photoluminescence: Applications
Oxygenic Photosynthesis
Deactivation Processes: Jablonski Diagram
Gene Regulation in Microbial Communities: Quorum Sensing
Variables Affecting Phosphorescence and Fluorescence
