What is targeted by the absorption coefficient in laser treatments?

The absorption coefficient is a crucial concept in laser treatments as it refers to how effectively a particular chromophore absorbs light at specific wavelengths. In the context of laser therapy, different chromophores are targeted because they have distinct absorption characteristics that can be leveraged for therapeutic purposes.

For example, melanin in hair or skin absorbs certain wavelengths of light, making it a primary target in hair removal treatments using lasers. Similarly, hemoglobin in blood vessels absorbs light at specific wavelengths, which can be exploited for skin rejuvenation and the treatment of vascular lesions. Understanding the absorption coefficient allows practitioners to choose the appropriate wavelength that will be absorbed by the target chromophore while minimizing absorption by surrounding tissues. This selectivity is vital for maximizing the effectiveness of the treatment while reducing potential side effects.