Physics, 12.02.2021 14:10 sophiav9780
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The color of light can be expressed in terms of either frequency (v) or wavelength which has units of nanometers (nm). The equation that relates the frequency and wavelength of light with the speed of light (c) is:
The speed of light is a constant and approximately equal to 300,000,000 meters per second.
Green lasers emit light at a wavelength of 532 nm. However, the material that is used to make most green lasers does not emit light at 532 nm. Instead, it emits light at a different wavelength, and the laser then uses a “frequency doubler.” This doubles the frequency of the emitted light, and the resultant light is the green 532 nm that we observe.
1 meter is equal to 1,000,000,000 nanometers.
What is the output light frequency of the material used before doubling?
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