Question

wavelength of HE-NE laser is ?​

Answer 1

Explanation:

Most often, He–Ne lasers emit red light at 632.8 nm at a power level of a few milliwatts and with excellent beam quality. The gain medium is a mixture of mostly helium and some neon gas in a glass tube, which normally has a length of the order of 15–50 cm. Figure 1: Setup of a helium–neon laser.

Answer 2

Answer:

wavelength of (He-Ne) laser is

633 nm