For an intense pulsed light (IPL) device, knowledge of the spectral output is useful in order to provide effective treatment and target specific structures in the skin. It is also a requirement in order to perform a safety assessment. A novel spectral measurement system has been developed to detect the optical radiation output of intense pulsed light devices. The system has a time resolution of 450 mus and a wavelength resolution of 0.6 nm. This enabled us to observe spectral changes, both within a pulse and between pulses, in a pulse train. The output from a free discharge IPL source and four different treatment handpieces was measured. A shift in the spectral distribution between pulses, and within a pulse, was discovered. The spectral shift is more prominent for higher radiant exposures.
- Optics and Photonics
- Spectrum Analysis
Eadie, E., Miller, P., Goodman, T., & Moseley, H. (2009). Time-resolved measurement shows a spectral distribution shift in an intense pulsed light system. Lasers in Medical Science, 24(1), 35-43. https://doi.org/10.1007/s10103-007-0517-z