How does the absorption spectrum of a laser impact its use in therapy?

The absorption spectrum of a laser is crucial in determining which tissues can be effectively targeted during therapy. Different tissues in the body absorb light at different wavelengths due to the presence of various chromophores, such as hemoglobin, water, and melanin. This means that a laser’s wavelength—part of its absorption spectrum—will determine how well it penetrates these tissues and how effectively it can deliver energy to produce a therapeutic effect.

For example, specific wavelengths are absorbed better by the chromophores in blood or skin, making them more effective for targeting conditions related to these tissues. In contrast, if a wavelength is not well absorbed by a particular tissue type, the laser will not be as effective in producing the desired therapeutic outcomes. Therefore, understanding the absorption spectrum helps clinicians choose the appropriate laser wavelength for specific medical conditions, enhancing therapeutic efficacy and patient outcomes.