What technique is used to enhance the absorption of laser energy in specific tissues?

The use of chromophores is fundamental in enhancing the absorption of laser energy in specific tissues. Chromophores are molecules that absorb light at particular wavelengths, allowing them to effectively interact with laser energy. When a laser is emitted, its wavelengths can be specifically matched to the chromophores present in the target tissues, thus enhancing its efficacy. For example, in dermatology, melanin and hemoglobin act as chromophores for lasers targeting pigmented lesions or vascular issues, respectively. By selecting a laser whose wavelength is absorbed well by the desired chromophore, practitioners can achieve more targeted and effective treatments.

In contrast, the application of ice packs, using higher laser settings, and performing multiple treatment sessions do not directly facilitate the specific absorption of laser energy by tissues in the same manner. Ice packs may help with pain and inflammation but do not influence how laser light is absorbed by tissue. Higher laser settings can increase energy delivery but do not selectively enhance absorption by targeting specific chromophores. Similarly, multiple treatment sessions may be beneficial for cumulative effects but do not alter the inherent absorption characteristics of the tissue. Thus, using chromophores is the most effective method for enhancing selective absorption of laser energy.