3.17577 x 10^14 Hz
or
317.5768 THz
To get the frequency, you need to divide the speed of light by the wavelength. Now the speed of light is 299792458 m/s, 0.944 µm = 0.000000994 m.
299792458 / 0.000000994 = 3.175768 x 10^14
So the frequency is 3.175768 x 10^14 Hz. If you desire a smaller number, another way of expressing the frequency is
317.5768 THz (Tera Hertz)
