What is the main benefit of using near infrared (NIR) in laser procedures?

The main benefit of using near infrared (NIR) in laser procedures is its ability to achieve high penetration in tissue. NIR wavelengths are less scattered and absorbed by biological tissues compared to shorter wavelengths. This characteristic allows NIR laser systems to effectively penetrate deeper layers of tissue, making them particularly useful for various medical and cosmetic applications, such as fat reduction and skin rejuvenation.

While the other options suggest potential benefits related to visible light enhancement, energy consumption, and atmospheric invisibility, they do not capture the primary advantage NIR lasers hold in clinical use. The high tissue penetration capability facilitates targeting deeper structures with minimal damage to the overlying layers, thereby improving the efficacy and safety of the procedures.