Consequently, multi-color tattoo removal almost always requires the use of two or more laser wavelengths.

This is achieved e.g. by using a lower laser power or a different laser wavelength.

The displacement of the cantilever will then be reduced as the laser wavelength is tuned past the absorption maximum.

Such stability may be used in precise laser applications to avoid laser wavelength drifting as environment temperature changes.

In other words, the pump wavelength is shorter than the laser wavelength.

Scientists performing meter calibrations would simply continue to measure out the same number of laser wavelengths until an agreement was reached to do otherwise.

For most sensing applications, the laser wavelength must also be within one of the atmospheric window to avoid signal attenuation.

The amount of energy absorbed is a function of the laser wavelength.

Black tattoo pigment absorbs all laser wavelengths, making it the easiest to treat.

For typical laser wavelengths, this method would require billions of micrometre-size antennae.