Laser Frequency

Laser frequency (f), measured in Hertz (Hz), is the number of times a wave repeats itself within 1 second. Think of Hertz as cycles per second. If a wave has a laser frequency of 1Hz, the wave repeats itself once every second. If the laser frequency is 2, the wave repeats itself two times within 1 second.

Laser frequency and laser wavelength are related via a mathematical formula c = λ × f. c is the speed of light with a constant value of 3.00x10^8 m/s. λ or lambda is the wavelength of the laser. f is the frequency. Looking at the equation, we see that if we know the frequency of a laser, we can calculate the wavelength and vice versa!