What wavelengths of light does an Argon laser emit?

• A. 400 nm and 450 nm
• B. 488 nm and 514 nm
• C. 600 nm and 700 nm
• D. 800 nm and 850 nm

Answer: (B)

The Argon laser is known for its output in the blue-green region of the spectrum, specifically emitting light at wavelengths of 488 nm and 514 nm. These wavelengths correspond to specific transitions of the Argon ions used in the laser, making it effective for applications such as biological imaging and photodynamic therapy.

Understanding these wavelengths is crucial because they fall within the visible spectrum and are often used in various medical and technological applications where precision in light absorption by biological tissues or materials is required. Other wavelengths mentioned in the incorrect choices do not align with the known emission characteristics of Argon lasers, which typically operate at shorter wavelengths within the blue-green range rather than in the red or infrared ranges represented by those options.