Laser Prework Practice Test 2025 - Free Prework Practice Questions and Study Guide

Diode lasers are semiconductor devices that emit light when an electric current passes through them, and their wavelength range typically spans from about 650 nm to over 1,000 nm. The correct wavelength range of 810-1064 nm is commonly associated with near-infrared diode lasers, which are used in various applications, including medical devices and laser machining. This range is notable for its efficiency and effectiveness in many therapeutic and industrial laser applications.

The other wavelength ranges mentioned are not representative of diode lasers. The range of 650-800 nm includes some diode lasers, especially those used in consumer electronics, but it does not capture the broader applications and strengths of diode lasers in the near-infrared spectrum. The ranges of 460-550 nm and 300-400 nm are characteristic of blue and ultraviolet lasers, respectively, which are not typically identified with diode laser technology in the same way as the near-infrared range. Thus, the provided correct answer accurately reflects the prevalent usage and technological capabilities of diode lasers.