The lifespan of a laser lamp depends primarily on the light source type and the operating environment. According to test data from the U.S. Department of Energy (DOE) and industry standards:
1. Semiconductor laser diodes (most common): Average lifespan is 5,000-10,000 hours, with high-quality models (such as the Osram PLTB450B) reaching 20,000 hours.
2. Gas lasers (such as helium-neon lasers): Longer lifespan, approximately 20,000-50,000 hours, but are larger and more expensive.
3. Solid-state lasers: Between the two, approximately 8,000-15,000 hours.
*Explanation*: The difference in lifespan is due to material wear. Semiconductor lasers gradually degrade due to electron migration and thermal effects, while gas lasers wear out more slowly.
