The properties of laser light depend on wavelength Light waves from a normal source do not produce a powerful cutting beam because they emerge randomly at various wavelengths Laser light however is spatially and temporally ID: 929561
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Slide1
Laser surgery
'Laser'
'Light Amplification by Stimulated Emission of Radiation'.
Slide2The properties of laser light depend
on
wavelength.
Light waves from a normal source do not produce a powerful cutting beam because they emerge randomly at various wavelengths. Laser light, however, is spatially and temporally coherent.
This means that the waves are the entire same wavelength (monochromatic) and are in parallel, so that none of the energy from the light source is lost by interference. [
Compare a 60-watt light bulb producing light and heat with a
60-watt laser beam that would cut through steel].