Abstract
Recycling light back into a plasma lamp's radiant zone can enhance its radiance. Measurements are reported for the effectiveness, spectral properties and modified plasma radiance maps that result from light recycling with a specular hemispherical mirror in commercial 150 W ultra-bright Xenon short-arc discharge lamps, motivated by projection, biomedical and high-temperature furnace applications. For certain spectral windows and plasma arc regions, radiance can be heightened by up to 70%. However, the overall light recycling efficiency is reduced to about half this value due to lamp geometry. The manner in which light-plasma interactions affect light recycling efficacy is also elucidated.
| Original language | English |
|---|---|
| Pages (from-to) | 14194-14201 |
| Number of pages | 8 |
| Journal | Optics Express |
| Volume | 15 |
| Issue number | 21 |
| DOIs | |
| State | Published - 17 Oct 2007 |
| Externally published | Yes |