Nd:YAG lasers are commonly used at which wavelength?

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Multiple Choice

Nd:YAG lasers are commonly used at which wavelength?

Nd:YAG lasers emit their primary laser line at 1064 nm. This near-infrared wavelength is the usual, fundamental output of Nd:YAG crystals and is favored for deep tissue penetration with relatively lower melanin absorption compared to shorter wavelengths, making it a common choice in medical applications like hair removal. Some Nd:YAG systems can be frequency-doubled to 532 nm, but that green line is produced via nonlinear conversion and is not the standard emission of Nd:YAG devices. The other wavelengths correspond to different laser systems: 755 nm is typical for alexandrite lasers, and 810 nm is common for diode lasers; 532 nm is the second-harmonic of 1064 nm, not the primary Nd:YAG output.

Nd:YAG lasers emit their primary laser line at 1064 nm. This near-infrared wavelength is the usual, fundamental output of Nd:YAG crystals and is favored for deep tissue penetration with relatively lower melanin absorption compared to shorter wavelengths, making it a common choice in medical applications like hair removal. Some Nd:YAG systems can be frequency-doubled to 532 nm, but that green line is produced via nonlinear conversion and is not the standard emission of Nd:YAG devices.

The other wavelengths correspond to different laser systems: 755 nm is typical for alexandrite lasers, and 810 nm is common for diode lasers; 532 nm is the second-harmonic of 1064 nm, not the primary Nd:YAG output.

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